Difference between revisions of "Clamp"

From DIYWiki
Jump to navigation Jump to search
(rozelo)
(m)
 
(18 intermediate revisions by 2 users not shown)
Line 1: Line 1:
[http://feelingmadness.comphost.info/content/i-wayne-satisfy.html i wayne satisfy her video] [http://suzannasommervi.alojalo.info/sitemap.html domain] [http://runongold.marshost.info/view/audio-dan-video.html audio dan video] [http://abbiekeyser.2222mb.com/ocean-hammock.html ocean hammock golf course] [http://freewebtown.com/mckersey/text/canadian-reverse.html canadian reverse phone directory] [http://elwandacaswell.alojalo.info/text/40dd.html 40dd] [http://undoe.x24hr.com/wiki/east-ayrshire.html east ayrshire planning] [http://endahaddad.mycv.tv/styles/krista-allen-sex.html krista allen sex video] [http://gallow.sexidude.com/dyeable-shoes.html dyeable shoes] [http://uproar.xxxy.info/pages/fragma.html fragma] [http://cristielupton.go2net.ws/content/adult-hairy-mature.html adult hairy mature video] [http://freewebtown.com/bagunia/new/psp-downloads.html psp downloads] [http://idellanedd.powerblogger.jp/web/es-skateboarding.html es skateboarding videos] [http://sharolynoverby.2222mb.com/lib/used-tire-service.html used tire service truck] [http://abbiekeyser.2222mb.com/gay-cowboy-love.html gay cowboy love] [http://uchiaddict.alojalo.info/blog/anchorage-movie.html anchorage movie listing] [http://feelingmadness.comphost.info/content/kevin-garnett-interview.html kevin garnett interview video] [http://freewebtown.com/ivabelvidere/styles/hotel-rates.html hotel rates] [http://abbiekeyser.2222mb.com/sitemap.html sitemap] [http://undoe.x24hr.com/wiki/spring-thomas.html free spring thomas] [http://lion.ikwb.com/q/ballasts.html ballasts] [http://abbiekeyser.2222mb.com/cruise-travel.html cruise travel] [http://tangelainabinet.2222mb.com/wiki/wal-mart-labor.html wal mart labor violations] [http://leave.ikwb.com/moving-to-portland.html moving service portland maine] [http://holily.mooo.com/decade-of-1960.html decade of 1960] [http://camilledarosa.isuisse.com/content/dog-care.html angeles care day dog los] [http://dowla.xxxy.info/resources/land-for-sale.html land for sale in colorado] [http://steepy.ikwb.com/wiki/ten-tors-inn.html ten tors inn kingsteignton] [http://freewebtown.com/povessel/directory/consumer-credit.html consumer counseling credit debt management] [http://freewebtown.com/spiceycreations/pages/bedding-teen.html custom teen bedding] [http://lekusya.hostwq.net/wiki/anna-movie-waltzing.html anna movie waltzing] [http://isbel.portrelay.com/html/suck-it-mom.html suck it mom] [http://dowla.xxxy.info/sitemap.html domain] [http://sharolynoverby.2222mb.com/lib/scuba-diving-instruction.html scuba diving instruction] [http://freewebtown.com/mckersey/text/jessica-simpson.html jessica simpson naked] [http://freewebtown.com/mckersey/text/dell.html dell] [http://idellanedd.powerblogger.jp/web/in-miami-photography.html in miami photography video wedding] [http://sweetmichela.marshost.info/new/advance-movie.html advance movie tickets purchase] [http://verdellballeste.9skul.com/content/lion-attacking-hunters.html lion attacking hunters video] [http://simplygamine.alojalo.info/comments/jugg-video.html jugg video] [http://poland.serveusers.com/county-of-san.html county of san diego] [http://freewebtown.com/bagunia/new/casino-games.html casino games] [http://freewebtown.com/mckersey/text/local-phone-service.html michigan local phone service] [http://simplygamine.alojalo.info/comments/audrey-tatu-movies.html audrey tatu movies] [http://runongold.marshost.info/view/impressions-spanking.html impressions spanking videos] [http://rachelpettiford.go2net.ws/jays-free-movies.html jays free movies] [http://undoe.x24hr.com/wiki/the-apl-song-lyrics.html the apl song lyrics by black eyed peas] [http://uproar.xxxy.info/pages/gibson-sisters.html gibson sisters] [http://tangelainabinet.2222mb.com/wiki/exterior-french.html exterior double french door] [http://tangelainabinet.2222mb.com/wiki/red-hat-magnets.html red hat magnets] [http://lion.ikwb.com/q/2005-nominations.html 2005 nominations oscars] [http://talithatwomey.pastels.jp/linkin-park-from.html linkin park from the inside music video] [http://pearlineperes.2222mb.com/sitemap.html website] [http://elvinahayashi.alojalo.info/q/palm-beach-county.html palm beach county marriage licenses] [http://tangelainabinet.2222mb.com/wiki/denim-sofas.html denim sofa cover] [http://freewebtown.com/oriencor/resources/beagle.html voyage of the beagle] [http://marybethalderma.2222mb.com/new/businessman.html became businessman church criminal destiny divine found global his its late ministry never pastor successful teenage thriving too] [http://marybethalderma.2222mb.com/new/ask-a-lawyer.html ask a lawyer online] [http://tilliekilkenny.powerblogger.jp/html/alter-bridge-music.html alter bridge music videos] [http://gallow.sexidude.com/plant-cloning.html plant cloning techniques] [http://sweetmichela.marshost.info/new/avengers-movie-naked.html avengers movie naked] [http://rachelpettiford.go2net.ws/ke-ke-xi-li-movie.html ke ke xi li movie] [http://freewebtown.com/mckersey/sitemap.html map] [http://rivalta.comphost.info/topic/audio-chattanooga.html audio chattanooga equipment household video] [http://lekusya.hostwq.net/wiki/educational-videos.html educational videos on teaching anger management to kids] [http://runongold.marshost.info/view/airplane-pentagon.html airplane pentagon video] [http://sweetmichela.marshost.info/new/eau-claire-movies.html eau claire movies calgary] [http://jerricabailey.powerblogger.jp/resources/atc-music-video.html atc music video] [http://verdellballeste.9skul.com/content/airsoft-movie-zombie.html airsoft movie zombie] [http://camilledarosa.isuisse.com/content/compaq-laptop.html cheap compaq laptop] [http://blondellnarvaez.pastels.jp/new/alive-and-movie.html alive and movie and 1993] [http://gallow.sexidude.com/barbeque-smokers.html barbeque smokers] [http://jerricabailey.powerblogger.jp/resources/alicia-keys-video.html alicia keys video girlfriend] [http://patrum.mooo.com/strptr-visual-basic.html strptr visual basic] [http://robbibrennen.powerblogger.jp/topic/internal-affairs.html internal affairs movie review] [http://jerricabailey.powerblogger.jp/resources/al-pachino-movie.html al pachino movie list] [http://elanorclausing.pastels.jp/sitemap.html url] [http://freewebtown.com/bagunia/new/football-games.html online football game] [http://dollydiva.9skul.com/lib/eric-roberts.html eric roberts the killers video] [http://freewebtown.com/ivabelvidere/sitemap.html url] [http://simplygamine.alojalo.info/comments/african-american.html african american movie star] [http://freewebtown.com/spiceycreations/pages/alprazolam-side.html alprazolam side effect] [http://holily.mooo.com/24-inch-printer.html 24 inch printer] [http://adamcranor.go2net.ws/jb-video-productions.html jb video productions] [http://elvinahayashi.alojalo.info/q/anopheles-gambiae.html anopheles gambiae complex] [http://abbiekeyser.2222mb.com/iris-folding.html 24 crafters folding iris library paper papers perforated] [http://idellanedd.powerblogger.jp/web/kiss-video-codes.html kiss video codes] [http://talithatwomey.pastels.jp/joe-thiesman-injury.html joe thiesman injury video] [http://freewebtown.com/kebradbe/description/pond-waterfalls.html building orthos pond stream waterfall] [http://patrum.mooo.com/englands-newspapers.html englands newspapers] [http://sheal.x24hr.com/directory/ap9606-firmware.html ap9606 firmware] [http://freewebtown.com/povessel/directory/japan-girl.html japan hot girl] [http://freewebtown.com/povessel/directory/personal-sexy.html personal sexy picture] [http://freewebtown.com/sypembru/content/sport.html ski sport] [http://novice.mooo.com/theater-wall-sconces.html theater wall sconces] [http://sheal.x24hr.com/directory/association-iowa.html association iowa lawyer trial] [http://tilliekilkenny.powerblogger.jp/html/art-latte-video.html art latte video] [http://gallow.sexidude.com/sitemap.html domain] [http://dollydiva.9skul.com/lib/audio-security.html audio security system video] [http://abbiekeyser.2222mb.com/p-o-r-n.html movie porn] [http://lekusya.hostwq.net/wiki/large-movie-penis.html large movie penis] [http://sweetmichela.marshost.info/new/amateur-party.html amateur party sex video] [http://dollydiva.9skul.com/lib/lightsaber-force.html lightsaber force fx video] [http://ostent.mooo.com/description/mick-jagger-shoot.html mick jagger shoot burnett competition] [http://rachelpettiford.go2net.ws/evil-mp4-penguin.html evil mp4 penguin video] [http://freewebtown.com/spiceycreations/pages/costume-pirate.html womens pirate costume] [http://simplygamine.alojalo.info/comments/anger-cast-management.html anger cast management movie] [http://freewebtown.com/sypembru/content/prima-donna-bra.html bra donna prima zanzibar] [http://freewebtown.com/bagunia/new/clotrimazole.html clotrimazole] [http://freewebtown.com/ivabelvidere/styles/mecum-auction.html mecum car auction] [http://sharenbezanson.pastels.jp/joke-and-prank.html joke and prank video] [http://camilledarosa.isuisse.com/content/gold-grills.html gold mouth grill] [http://tangelainabinet.2222mb.com/wiki/casting-human-body.html casting human body parts] [http://endahaddad.mycv.tv/styles/anthrax-videos.html anthrax videos] [http://lion.ikwb.com/q/the-miami-herald.html the miami herald] [http://frankielivesay.go2net.ws/alone-i-break.html alone i break video] [http://camilledarosa.isuisse.com/content/domestications.html domestications coupon] [http://holily.mooo.com/screen-name-generator.html cool screen name generator] [http://rachelpettiford.go2net.ws/kwaito-music-videos.html kwaito music videos] [http://amieehermann.mycv.tv/lib/ea-sports-lacrosse.html ea sports lacrosse video game] [http://horner.ikwb.com/new/refrigerated.html refrigerated centrifuge] [http://undoe.x24hr.com/wiki/foreign-language.html foreign language translation service] [http://elvinahayashi.alojalo.info/q/la-belle-mariee.html la belle mariee bridal] [http://horner.ikwb.com/new/omega-deville.html deville omega] [http://tonnyk.alojalo.info/q/eternelle-movie.html eternelle movie] [http://abbiekeyser.2222mb.com/07821.html 07821] [http://horner.ikwb.com/new/trailer-dolly.html dolly electric trailer] [http://novice.mooo.com/sitemap.html url] [http://rivalta.comphost.info/topic/ejb-videos.html ejb videos] [http://undoe.x24hr.com/wiki/abc-warehouse.html abc warehouse] [http://freewebtown.com/mckersey/text/titts.html big titts round ass] [http://sweetmichela.marshost.info/new/amazing-ghost-video.html amazing ghost video] [http://freewebtown.com/sypembru/content/sex-voyeur.html voyeur sex video] [http://patrum.mooo.com/redmond-wa-real.html redmond wa real estate] [http://horner.ikwb.com/new/computer-science.html computer science degree online] [http://sweetmichela.marshost.info/new/eminem-ass-like.html eminem ass like that video clip] [http://feelingmadness.comphost.info/content/abc-free-daily.html abc free daily gay video clips] [http://tangelainabinet.2222mb.com/wiki/teen-web-cam.html teen web cam] [http://abbiekeyser.2222mb.com/ann-coulter.html ann coulter married] [http://poland.serveusers.com/pw50-performance.html pw50 performance] [http://dreamavergara.powerblogger.jp/aafes-movies-korea.html aafes movies korea] [http://uproar.xxxy.info/pages/park-royal-club.html park royal club cala] [http://sharolynoverby.2222mb.com/lib/new-jersey-womens.html new jersey womens platform tennis league] [http://gallow.sexidude.com/tarragon.html tarragon] [http://amieehermann.mycv.tv/lib/actress-alley-kristy.html actress alley kristy movie] [http://steepy.ikwb.com/wiki/kathleen-hanna.html kathleen hanna] [http://ostent.mooo.com/description/rhinos-thumbs.html rhinos thumbs] [http://horner.ikwb.com/new/smoke-grenades.html smoke grenades] [http://talithatwomey.pastels.jp/sitemap.html sitemap] [http://suzannasommervi.alojalo.info/pages/evolution-movie.html evolution movie underwater] [http://leave.ikwb.com/japanese-animated.html japanese animated cartoons] [http://steepy.ikwb.com/wiki/haircut-emo.html picture of emo hair cut for girl] [http://verdellballeste.9skul.com/content/insurgents-killed.html insurgents killed video] [http://suzannasommervi.alojalo.info/pages/affect-brain-game.html affect brain game video] [http://tangelainabinet.2222mb.com/wiki/marvel-vs-capcom.html marvel vs capcom 2 download] [http://talithatwomey.pastels.jp/amateur-coast.html amateur coast guard sex video] [http://sharolynoverby.2222mb.com/lib/ray-ban-sun-glasses.html ray ban sun glasses] [http://freewebtown.com/ivabelvidere/styles/employee-review.html employee review forms] [http://abbiekeyser.2222mb.com/biggest-pussy-in.html biggest in pussy world] [http://rachelpettiford.go2net.ws/arnez-j-video.html arnez j video clips] [http://freewebtown.com/kebradbe/description/pussycat-dolls-mp3.html pussycat dolls mp3] [http://reginiaapple.pastels.jp/sitemap.html map] [http://robbibrennen.powerblogger.jp/topic/eve-6-videos.html eve 6 videos] [http://jerricabailey.powerblogger.jp/resources/jennifer-lopez.html jennifer lopez marc anthony duet grammy video] [http://lion.ikwb.com/q/santa-lucia.html loteria santa lucia guatemala] [http://abbiekeyser.2222mb.com/sitemap.html website] [http://freewebtown.com/ivabelvidere/styles/download-drive.html download drive driver flash usb] [http://freewebtown.com/kebradbe/description/jaguar-parts.html jaguar parts] [http://poland.serveusers.com/bellacor.html bellacor lighting] [http://freewebtown.com/mckersey/text/frontier-air-lines.html frontier air lines] [http://runongold.marshost.info/view/league-of-gentleman.html league of gentleman movie trailer] [http://dowla.xxxy.info/resources/empty-quarter-desert.html empty quarter desert] [http://uproar.xxxy.info/sitemap.html www] [http://gallow.sexidude.com/emily-dickinson.html emily dickinson] [http://ostent.mooo.com/description/foreign-currency.html foreign currency translation] [http://simplygamine.alojalo.info/comments/k20-crx-video.html k20 crx video] [http://simplygamine.alojalo.info/comments/ashley-allen.html ashley allen video] [http://steepy.ikwb.com/wiki/yahoo-driving.html yahoo driving] [http://talithatwomey.pastels.jp/sitemap.html map] [http://simplygamine.alojalo.info/comments/all-occasion-video.html jeu video occasion] [http://leave.ikwb.com/city-of-cincinnati.html city of cincinnati oh] [http://pearlineperes.2222mb.com/web/california-death.html california death records] [http://freewebtown.com/sypembru/content/wireless-router.html best review wireless router] [http://suzannasommervi.alojalo.info/pages/andrea-bocelli-videos.html andrea bocelli videos] [http://freewebtown.com/mckersey/text/proscar.html proscar finasteride] [http://verdellballeste.9skul.com/content/amateur-movie.html amateur home movie of teen] [http://uproar.xxxy.info/pages/female-body-photography.html female body photography] [http://steepy.ikwb.com/wiki/road-barriers.html road barriers] [http://dollydiva.9skul.com/lib/associated-press.html associated press yamin video] [http://uchiaddict.alojalo.info/blog/american-idiot.html american idiot music video pictures] [http://elwandacaswell.alojalo.info/text/custom-gift-baskets.html basket create custom gift] [http://endahaddad.mycv.tv/styles/lez-porn-videos.html lez porn videos] [http://sweetmichela.marshost.info/new/kates-playground.html kates playground kylies secret video] [http://freewebtown.com/ivabelvidere/styles/audemars-piguet.html audemars piguet watch royal oak] [http://tangelainabinet.2222mb.com/wiki/ionamin-online.html ionamin online] [http://elvinahayashi.alojalo.info/q/kaplan-university.html kaplan university] [http://gallow.sexidude.com/john-bradshaw.html john bradshaw] [http://holily.mooo.com/swimming-drill.html swimming drill] [http://leave.ikwb.com/adios.html amargo adios] [http://elvinahayashi.alojalo.info/q/jordan-page-3-model.html jordan page 3 model]
 
 
[[Image:Clamps.jpg|centre|thumb|400px|A selection of woodworking clamps. Top: Pipe clamp;
 
[[Image:Clamps.jpg|centre|thumb|400px|A selection of woodworking clamps. Top: Pipe clamp;
 
2nd row from top: F-clamp or bar clamp, one-handed bar clamp ("Quick Grip"), wooden handscrew;
 
2nd row from top: F-clamp or bar clamp, one-handed bar clamp ("Quick Grip"), wooden handscrew;
Line 6: Line 5:
  
 
===G clamp===
 
===G clamp===
 +
[[image:G_clamp_19-6.jpg|right|180px]]
 +
 
Also known as a C clamp or G cramp, this is a traditional clamp with high clamp force and numerous uses. The long [[Screws|screw]] thread tends to make it slow in use, so quick release clamps are preferred where their lower clamp force is sufficient.  
 
Also known as a C clamp or G cramp, this is a traditional clamp with high clamp force and numerous uses. The long [[Screws|screw]] thread tends to make it slow in use, so quick release clamps are preferred where their lower clamp force is sufficient.  
  
G clamps are prone to denting the workpiece, due to high force on a small pad, or scratching workpieces. Loose load spreading pieces of wood, plastic, etc are used to avoid this, but make handling the assembly less easy.
+
G clamps are prone to denting the workpiece, due to high force on a small pad, or scratching workpieces. Loose load spreading pieces of wood, [[plastic]], etc are used to avoid this, but make handling the assembly less easy.
  
 
===Spring clamp===
 
===Spring clamp===
Very low clamping force compared to traditional clamps. Very quick to use. Can be useful for holding things in place while fixing them, but often several clamps are needed to give enough holding force.
+
[[image:Spring clamp 0017-5.jpg|right|180px]]
  
Its possible to make basic spring clamps by cutting plastic pipe into C shaped pieces. See [[Make Things from PVC Pipe]].
+
* Very low clamping force compared to traditional clamps.
 +
* Very quick.
 +
* Useful for holding things in place while [[fixing]] them
 +
* often several clamps are needed to give enough holding force.
 +
 
 +
Also see PVC pipe clamp below.
  
 
===Sash Cramp===
 
===Sash Cramp===
Line 19: Line 25:
  
 
===Quick release clamp===
 
===Quick release clamp===
 +
[[image:Klieste_truhlarske.jpg|right|180px]]
 +
 
These have a trigger mechanism to tighten the clamp, and a button to release grip. These find a lot of use in [[Special:Allpages|DIY]] due to fast easy use. The clamping forces don't compare to [[Screws|screw]] operated clamps, so they're not suitable for all tasks. Use of several quick release clamps improves total clamp force.
 
These have a trigger mechanism to tighten the clamp, and a button to release grip. These find a lot of use in [[Special:Allpages|DIY]] due to fast easy use. The clamping forces don't compare to [[Screws|screw]] operated clamps, so they're not suitable for all tasks. Use of several quick release clamps improves total clamp force.
  
Line 25: Line 33:
  
 
===Monkey wrench===
 
===Monkey wrench===
[[Image:Monckywrench.jpg|right|thumb|103px|Monkey wrench]]
+
[[Image:Monckywrench.jpg|right|103px]]
  
The [[monkey]] wrench is often referred to but not much used today, though it is sometimes found in DIYers' tool collections. Used as a clamp it is a poor performer, as it is both slow to use and will not apply high pressure. It is better suited to use as an adjustable spanner.
+
The [[monkey]] wrench is often referred to but not much used today, though it is sometimes found in DIYers' [[tool]] collections. Used as a clamp it is a poor performer, as it is both slow to use and will not apply high pressure. It is better suited to use as an adjustable [[spanner]].
  
 
Despite various stories, the origin of the name remains a mystery.
 
Despite various stories, the origin of the name remains a mystery.
  
 
===Vice===
 
===Vice===
The main advantage of a vice is its attached to a heavy bench, so it stops things moving. Vice jaws can damage workpiece surfaces. Wood, plastic or aluminium liners can help stop this.
+
[[image:ViceBench-insetSoftJaws.jpg|right|180px]]
 +
 
 +
The main advantage of a vice is its attached to a heavy bench, so it stops things moving.  
 +
 
 +
Vice jaws can damage workpiece surfaces. Soft jaw liners of wood, plastic or aluminium can help stop this.
 +
 
 +
Engineer's vices sometimes have a small anvil built in.
 +
 
 +
Woodworking vices are often made of [[wood]] and an integral part of the bench.
  
 
A miniature vice attached to a couple of square feet of [[Sheet Materials|board]] can sometimes be useful for working on tiny items.
 
A miniature vice attached to a couple of square feet of [[Sheet Materials|board]] can sometimes be useful for working on tiny items.
  
 
===Mole grips===
 
===Mole grips===
 +
[[Image:180px-Locking_pliers.jpg|right|180px]]
 +
 
A locking type of plier. Gives the highest clamping force of any portable type of clamp.
 
A locking type of plier. Gives the highest clamping force of any portable type of clamp.
  
[[Image:180px-Locking_pliers.jpg]]
+
The [[bolt]] on the handle end of the tool is adjusted to obtain a high clamp force on the workpiece (bolt too far out and clamping is weak, bolt too far in and it won't close on the workpiece), and the lever (next to the bolt) is pressed to release clamping force to enable removal.
 +
 
 +
Note the jaws are generally not parallel, which means that the position of the workpiece in the jaws also affects the required bolt position.
  
 
===Portable workbench===
 
===Portable workbench===
Portable workbenches are used in place of a bench & vice. Their performance is not comparable, but they will still do a lot of jobs. These are mainly used for portability, and where there is not enough space to have a proper bench. Accessories are easily made to enable clamping of non-flat items.
+
Portable workbenches are used in place of a bench & vice. These are mainly used for portability, and where there is not enough space to have a proper bench. Their performance is not comparable, but they will still do a lot of jobs. Accessories are easily made to enable clamping of non-flat items.
  
 
===Web Clamp===
 
===Web Clamp===
Line 67: Line 87:
 
* Clamped items need to be moved carefully
 
* Clamped items need to be moved carefully
  
===Dog Clamp===
+
===Pinch dog===
A dog clamp is a piece of sheet metal with 2 spikes that are knocked into the pieces of wood to be held together. Inserting the clamp pulls the wood together.
+
A Pinch dog is a piece of sheet metal cut with 2 spikes that are knocked into the pieces of wood to be held together. Inserting the clamp pulls the wood together.
  
 
These are used when minor damage to the end of the workpiece is acceptable.
 
These are used when minor damage to the end of the workpiece is acceptable.
Line 79: Line 99:
 
  |              |
 
  |              |
 
  |______________|
 
  |______________|
 +
 +
Pinch dog
  
 +
===PVC Pipe Clamp===
 +
[[image:PVC clamps 1683-2.jpg|right|180px]]
  
===PVC Pipe Clamp===
 
 
A [[Make Things from PVC Pipe|PVC pipe]] clamp is nothing more than an inch of [[Make Things from PVC Pipe|pvc pipe]] slit open. It is a simple type of spring clamp readily made from [[Make Things from PVC Pipe|plastic pipe]] scrap. If you need greater clamping force, use 2" pieces of pipe instead of 1".
 
A [[Make Things from PVC Pipe|PVC pipe]] clamp is nothing more than an inch of [[Make Things from PVC Pipe|pvc pipe]] slit open. It is a simple type of spring clamp readily made from [[Make Things from PVC Pipe|plastic pipe]] scrap. If you need greater clamping force, use 2" pieces of pipe instead of 1".
  
 
The clamp on the right has fancy wooden jaws added. This increases the spring force by pushing the pipe further out, but reduces maximum throat size.
 
The clamp on the right has fancy wooden jaws added. This increases the spring force by pushing the pipe further out, but reduces maximum throat size.
  
[[Image:PVC_clamp.jpg]]
+
[[Image:PVC_clamp.jpg|right|180px]]
  
 
http://www.pvcworkshop.com/ShopProjects.htm
 
http://www.pvcworkshop.com/ShopProjects.htm
 +
 +
====Make PVC clamps====
 +
These are quick to make with a mitre saw.
 +
# Clamp a 2" piece of [[wood]] in the [[saw]]
 +
# [[Saw|Cut]] into the top side of the [[Plumbing|pipe]] lengthways, holding it firmly against the clamped wood
 +
# Cross cut the pipe to cut the clamp off
 +
# [[Drill]] 2 holes and insert [[screws]] to act as handles to open the clamps.
  
 
===Alternatives to Clamps===
 
===Alternatives to Clamps===
Line 94: Line 124:
  
 
====Tape====
 
====Tape====
[[Tapes|Tape]] can be used as a crude clamp. The [[Tapes|tape]] is pulled tight as its applied, and clamping force builds up with each added turn of [[Tapes|tape]]. An initial layer of paper or polythene can be used to stop [[Tapes|tape]] sticking to the workpiece.
+
[[Tapes|Tape]] makes a crude clamp. The [[Tapes|tape]] is pulled tight as its applied, and clamping force builds up with each added turn of [[Tapes|tape]]. An initial layer of paper or polythene can be used to stop [[Tapes|tape]] sticking to the workpiece.
  
 
====Screw====
 
====Screw====
Line 100: Line 130:
  
 
====Heavy Object====
 
====Heavy Object====
Gravity is enough for some jobs. Clamp force is often poor.
+
Gravity is enough for some jobs. Clamp force is usually poor.
  
 
==See Also==
 
==See Also==

Latest revision as of 22:48, 4 May 2013

A selection of woodworking clamps. Top: Pipe clamp; 2nd row from top: F-clamp or bar clamp, one-handed bar clamp ("Quick Grip"), wooden handscrew; 3rd row: spring clamp, G-clamp (C-clamp), wooden cam clamp.


G clamp

G clamp 19-6.jpg

Also known as a C clamp or G cramp, this is a traditional clamp with high clamp force and numerous uses. The long screw thread tends to make it slow in use, so quick release clamps are preferred where their lower clamp force is sufficient.

G clamps are prone to denting the workpiece, due to high force on a small pad, or scratching workpieces. Loose load spreading pieces of wood, plastic, etc are used to avoid this, but make handling the assembly less easy.

Spring clamp

Spring clamp 0017-5.jpg
  • Very low clamping force compared to traditional clamps.
  • Very quick.
  • Useful for holding things in place while fixing them
  • often several clamps are needed to give enough holding force.

Also see PVC pipe clamp below.

Sash Cramp

A sash cramp or sash clamp is a long bar clamp for larger pieces of woodwork. Widely used for gluing wooden goods.

Quick release clamp

Klieste truhlarske.jpg

These have a trigger mechanism to tighten the clamp, and a button to release grip. These find a lot of use in DIY due to fast easy use. The clamping forces don't compare to screw operated clamps, so they're not suitable for all tasks. Use of several quick release clamps improves total clamp force.

Spreader

Spreaders push things apart instead of squeezing them together. Many quick release clamps can have their jaws reversed to do this. Special purpose spreaders are also available.

Monkey wrench

Monckywrench.jpg

The monkey wrench is often referred to but not much used today, though it is sometimes found in DIYers' tool collections. Used as a clamp it is a poor performer, as it is both slow to use and will not apply high pressure. It is better suited to use as an adjustable spanner.

Despite various stories, the origin of the name remains a mystery.

Vice

ViceBench-insetSoftJaws.jpg

The main advantage of a vice is its attached to a heavy bench, so it stops things moving.

Vice jaws can damage workpiece surfaces. Soft jaw liners of wood, plastic or aluminium can help stop this.

Engineer's vices sometimes have a small anvil built in.

Woodworking vices are often made of wood and an integral part of the bench.

A miniature vice attached to a couple of square feet of board can sometimes be useful for working on tiny items.

Mole grips

180px-Locking pliers.jpg

A locking type of plier. Gives the highest clamping force of any portable type of clamp.

The bolt on the handle end of the tool is adjusted to obtain a high clamp force on the workpiece (bolt too far out and clamping is weak, bolt too far in and it won't close on the workpiece), and the lever (next to the bolt) is pressed to release clamping force to enable removal.

Note the jaws are generally not parallel, which means that the position of the workpiece in the jaws also affects the required bolt position.

Portable workbench

Portable workbenches are used in place of a bench & vice. These are mainly used for portability, and where there is not enough space to have a proper bench. Their performance is not comparable, but they will still do a lot of jobs. Accessories are easily made to enable clamping of non-flat items.

Web Clamp

Flat webbing plus a tightening mechanism, this clamps bundled goods for handling / moving. It may also be used to clamp woodwork, but its one sided pull can pull items out of alignment. This effect can be reduced to some degree by putting two polythene sheets under the webbing, thereby reducing friction and allowing more force equalisation.

Use of wedges to equalise tension is not recommended, as any uneven force applied across the webbing can damage webbing and workpiece.

Rope & Wedges

This is a cruder homemade version of the web clamp that gives better performance in alignment terms, due to tightening being applied on both sides. However adjustability is poor, use is slow and awkward, and maximum clamping force is lower due to the round shape of the rope. This one has no size limit; if you have hundrds of feet of rope you can use it.

A rope is tied round the items to be clamped. Wedges are inserted under the rope to pull the rope tight. Using a wedge on both sides avoids asymmetric pull.

When a wedge is not to hand, scrap wood, food tins and so on can be used, but finding just the right size can be a pain.

The advantages are:

  • enables jobs to be done when no proper clamps are to hand.
  • it can secure oddly shaped workpieces
  • it can clamp any size of workpiece

The disadvantages are:

  • there is not good accurate control of clamping tension
  • wedging on one side only will pull items out of alignment, so access to both sides is needed for reasonable performance.
  • maximum clamping force is limited, though often sufficient to get the job done.
  • Clamped items need to be moved carefully

Pinch dog

A Pinch dog is a piece of sheet metal cut with 2 spikes that are knocked into the pieces of wood to be held together. Inserting the clamp pulls the wood together.

These are used when minor damage to the end of the workpiece is acceptable.


|\            /|
| \          / |
|  \________/  |
|              |
|______________|

Pinch dog

PVC Pipe Clamp

PVC clamps 1683-2.jpg

A PVC pipe clamp is nothing more than an inch of pvc pipe slit open. It is a simple type of spring clamp readily made from plastic pipe scrap. If you need greater clamping force, use 2" pieces of pipe instead of 1".

The clamp on the right has fancy wooden jaws added. This increases the spring force by pushing the pipe further out, but reduces maximum throat size.

PVC clamp.jpg

http://www.pvcworkshop.com/ShopProjects.htm

Make PVC clamps

These are quick to make with a mitre saw.

  1. Clamp a 2" piece of wood in the saw
  2. Cut into the top side of the pipe lengthways, holding it firmly against the clamped wood
  3. Cross cut the pipe to cut the clamp off
  4. Drill 2 holes and insert screws to act as handles to open the clamps.

Alternatives to Clamps

Bodge-like clamp replacements such as tape and weights can be useful when gluing quantities of items, and large quantities of traditional clamps are not to hand, and would be an unnecessary expense.

Tape

Tape makes a crude clamp. The tape is pulled tight as its applied, and clamping force builds up with each added turn of tape. An initial layer of paper or polythene can be used to stop tape sticking to the workpiece.

Screw

A screw in an inconspicuous position is sometimes good as a clamp.

Heavy Object

Gravity is enough for some jobs. Clamp force is usually poor.

See Also