Media blasting
From Crankshaft Coalition Wiki
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==Media blasting tools== | ==Media blasting tools== | ||
===Blast cabinets=== | ===Blast cabinets=== | ||
====Where to buy them==== | ====Where to buy them==== | ||
| − | + | If you only plan on blasting one car, once, it may be cheaper to have it done professionally, than to purchase all of the necessary equipment. | |
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*[http://mediablast.com Media Blast] | *[http://mediablast.com Media Blast] | ||
| + | *[http://www.nortonsandblasting.com Norton Sandblasting Equipment] | ||
| + | *[http://www.tptools.com/d/12_Abrasive-Blasting.html TP Tools and Equipment] | ||
| + | *[http://www.airblastafc.com/plastic-media-blasting.html Airblast AFC] | ||
====How to build them==== | ====How to build them==== | ||
| − | *http://www.jalopyjournal.com/forum/showthread.php?t=143854 | + | *[http://www.smecca.com/2011/02/build-your-own-abrasive-blasting-cabinet/ Build your own abrasive blasting cabinet] from smecca.com |
| − | *http://www.hotrodders.com/forum/sandblasting-cabinet-homemade-79837.html | + | *[http://www.jalopyjournal.com/forum/showthread.php?t=143854] from jalopy journal.com |
| − | *http://www.ford-trucks.com/article/idx/5/007/article/Build_Your_Own_Grit_Blasting_Cabinet.html | + | *[http://www.hotrodders.com/forum/sandblasting-cabinet-homemade-79837.html Homenade sandblasting cabinet] from hotrodders.com |
| − | *[http://www.autodidactics.com/sand.htm Blasting cabinet made from dishwasher housing] | + | *[http://www.ford-trucks.com/article/idx/5/007/article/Build_Your_Own_Grit_Blasting_Cabinet.html Build your own grit blasting cabinet] from ford trucks.com |
| + | *[http://www.autodidactics.com/sand.htm Blasting cabinet made from dishwasher housing] from autodidactics.com | ||
| + | *[http://www.hotrodders.com/forum/building-your-own-sandblast-cabinet-44167.html Building your own sandblast cabinet discussion] from hotrodders.com | ||
| + | *[http://www.joeshome.com/projects/blastcabinet/default.htm Blast cabinet] from joeshome.com | ||
| + | *[http://www.scribd.com/doc/14152057/Popular-Mechanics-PlansHomemade-Sandblasting-Cabinet-Blueprints Popular Mechanics homemade sandblasting cabinet plans] | ||
| − | *Interior coating can be made from something soft, rather than hard (rubber?). Norton Sandblasting Equipment sells rubber curtains for this purpose. Spray-in bedliner has been suggested. | + | =====Notes===== |
| + | *Interior coating can be made from something soft, rather than hard (rubber?). Norton Sandblasting Equipment sells rubber curtains for this purpose. Spray-in bedliner has also been suggested. | ||
===Media blasting guns=== | ===Media blasting guns=== | ||
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==Where to get media== | ==Where to get media== | ||
| − | Locally, online, | + | Locally, online, inexpensive? |
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| + | *Hardware stores | ||
| + | *Welding shops | ||
| + | *Home improvement stores | ||
| + | *Farm-oriented department stores (Tractor Supply Co. and Fleet Farm) | ||
==Dealing with dust== | ==Dealing with dust== | ||
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You need air flowing into the cabinet, as well as out. | You need air flowing into the cabinet, as well as out. | ||
| − | Some creative solutions on dealing with dust are here: http://www.hotrodders.com/forum/blasting-cabinet-clouds-up-136430 | + | Some creative solutions on dealing with dust are here: *[http://www.hotrodders.com/forum/blasting-cabinet-clouds-up-136430.html Blasting cabinet clouds up]. |
==Blast cabinet visibility== | ==Blast cabinet visibility== | ||
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===Shop vacs=== | ===Shop vacs=== | ||
| − | You can burn out a shop vac using it to evacuate a blast cabinet -- the media is so small it gets into the motor, and | + | You can burn out a shop vac using it to evacuate a blast cabinet -- the media is so small it gets into the motor, and is abrasive. Also, the paper filter gets clogged very quickly. One suggestion is to wrap the filter with a layer of foam (like some car filters). Shop vacs have low CFM compared to most suitable fans, so they aren't going to work very well -- you need a more powerful fan. |
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==Different types of media== | ==Different types of media== | ||
| − | + | Most media will require storage in a dry place. | |
| + | Various media: | ||
*Alumaglass | *Alumaglass | ||
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*Automotive glass beads | *Automotive glass beads | ||
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*Black beauty | *Black beauty | ||
| + | *Black diamond | ||
| + | *Crushed glass | ||
*Crystal grit | *Crystal grit | ||
| − | * | + | *Quikrete fine sand |
| + | *Star blast | ||
| + | *Walnut shells | ||
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| + | ===Media details=== | ||
| + | *[http://www.tpub.com/content/UFC1/ufc_3_190_06/ufc_3_190_060112.htm Typical physical characteristics of abrasives] | ||
| + | *[http://toxsci.oxfordjournals.org/cgi/content/full/61/1/135 Comparative pulmonary toxicity of 6 abrasive blasting agents] | ||
| + | *[http://www.mediablast.com/dictionary.asp Media blasting dictionary of terms] | ||
| + | *[http://www.unitedwesterndenver.com/images/stories/abrasives_line_card.pdf Abrasives line card] (grit size, common uses, Mohs, cycles, packaging) | ||
| + | |||
| + | ===Blast media guides=== | ||
| + | *[http://www.guysonlib.co.uk/lib/blast/guyson_blast_media_guide.pdf Blast media guide from Guyson International] | ||
| + | *[http://www.kramerindustriesonline.com/finishing-guides/blasting-media-selection-guide.htm Blasting media selection guide from Kramer Industries] | ||
| + | *[http://www.metalpreparations.com/abrasive_blasting_media_guide.php Abrasive blasting media guide from Metal Preparations] | ||
| + | *[http://www.reade.com/Particle_Briefings/mohs_hardness_abrasive_grit.html Mohs' hardness blast media comparison chart, from Reade Advanced Materials] | ||
| + | |||
| + | ===Soda blasting=== | ||
| + | Soda blasting is the use of sodium bicarbonate ("baking soda") as a blast medium. For more information, see: [[Soda blasting]]. | ||
| + | Never soda blast cars still together as the media gets into electrical sockets and connections and will cause chemical reactions that can and will cause a myriad of problems. | ||
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| + | ==Compressed air== | ||
| + | [http://www.mediablast.com/compressed-air-usage.asp Compressed air usage chart] | ||
| − | ==Sandblasting sheet metal== | + | ==Sandblasting sheet metal warnings== |
| − | + | *Sandblasting sheet metal is controversial, and often ill-advised. | |
| + | *Sand blasting of thin sheet metal causes peening that may cause the metal to ding, warp, or pit. Be aware of this, especially if you are going to be doing a long, flat, unsupported body panel. The best way to avoid this on long spans is to spread out the blast from the gun so that not one area receives the brunt of the abrasive blast for a long period of time. It also gives it time to cool. | ||
| + | *Sand creates chloride ions and corrosive salts that promote [[Rust|rust]]. | ||
==Recycling media== | ==Recycling media== | ||
*Don't recycle media that has been used to blast undercoating -- it contaminates the media. | *Don't recycle media that has been used to blast undercoating -- it contaminates the media. | ||
| + | *Most media recycles very nicely, with the larger particles breaking down into smaller, sharper ones. Eventually, it will be broken down so far that it cannot diffuse into smaller particles, and the media will have to be replaced. | ||
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| + | ==Preparing surface after blasting== | ||
| + | Be certain to follow the primer/paint/filler manufacturer's instructions for preparing the surface after blasting, for proper adhesion. | ||
==Safety== | ==Safety== | ||
| − | * | + | There is no "safe" blasting medium. Use the proper safety procedures. |
| − | * | + | |
| + | "Abrasive blasting with sands containing crystalline silica can cause serious or fatal respiratory disease." -- [http://www.cdc.gov/niosh/92-102.html CDC: Preventing Silicosis and Deaths from Sandblasting]. | ||
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| + | ===Protection for open-air blasting=== | ||
| + | ====Bare minimum==== | ||
| + | *Long pants and sleeves | ||
| + | *Fully enclosed shoes (remember to put your socks over you pants!) | ||
| + | *A face mask with safety goggles worn underneath | ||
| + | *Leather gloves (media doesn't feel the greatest on your hands when coming out at 100+ PSI) | ||
| + | *Respirator (NOT a cheap paper one, the cartridge-type is the one you want). Read the MSDS sheet for the blasting medium that you're using, and use the recommended respirator and/or personal protective equipment. | ||
| + | |||
| + | ====Much better protection==== | ||
| + | *Full coveralls | ||
| + | *Full blasting mask | ||
| + | *Long leather gauntlet-type welder's gloves | ||
| + | *Leather work boots (must be over ankles) | ||
==Resource dump== | ==Resource dump== | ||
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*http://davepropst.com/Article/Art5/Article5.htm, http://davepropst.com/Article/Art5/Article5b.htm, and http://davepropst.com/Article/Art5/Article5c.htm | *http://davepropst.com/Article/Art5/Article5.htm, http://davepropst.com/Article/Art5/Article5b.htm, and http://davepropst.com/Article/Art5/Article5c.htm | ||
*http://www.fordification.com/my67-p12.htm | *http://www.fordification.com/my67-p12.htm | ||
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*http://www.hotrodders.com/forum/newbie-but-not-new-118463.html | *http://www.hotrodders.com/forum/newbie-but-not-new-118463.html | ||
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*[http://mediablast.com/tech-library.asp Media blast technical library] | *[http://mediablast.com/tech-library.asp Media blast technical library] | ||
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*[http://www.bestofblasting.com/ Best of blasting -- extensive site] | *[http://www.bestofblasting.com/ Best of blasting -- extensive site] | ||
| + | *[http://www.ustechnology.com USTechnology.com] | ||
| + | *http://www.chevelles.com/forums/showthread.php?p=653929 | ||
| + | *[http://www.cdc.gov/niosh/pdfs/ab_p1rep.pdf Evaluation of Substitute Materials for Silica Sand in Abrasive Blasting] | ||
| + | *[http://www.nortonsandblasting.com/nsbarchives.html Norton Sandblasting archived articles] | ||
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| + | ==Resources== | ||
| + | *[http://en.wikipedia.org/wiki/Abrasive_blasting Abrasive blasting page on Wikipedia] | ||
| + | |||
| + | ;Crankshaft Coalition wiki articles | ||
| + | *[[Sandblasting]] | ||
| + | *[http://www.crankshaftcoalition.com/wiki/Rust#Media_blasting_rust Media blasting rust] | ||
| + | *[[Soda blasting]] | ||
| + | |||
| + | ;Hotrodders forum threads | ||
| + | *[http://www.hotrodders.com/forum/sand-blasting-cabinet-question-94622.html Sand blasting cabinet question] | ||
| + | *[http://www.hotrodders.com/forum/best-sandblasting-media-65731.html Best sandblasting media] | ||
| + | *[http://www.hotrodders.com/forum/sandblast-cabinet-coating-115718.html Sandblast cabinet coating] | ||
| + | *[http://www.hotrodders.com/forum/starting-small-blasting-business-176341.html Starting a small blasting business] | ||
| + | *[http://www.hotrodders.com/forum/what-kind-sand-do-i-need-sandblaster-40114.html What kind of sand do I need] | ||
| + | |||
| + | ;Hotrodders Knowledge Base | ||
| + | *[http://www.hotrodders.com/kb/media-blasting Media Blasting] | ||
| − | + | [[Category:Body and exterior]] | |
| − | + | [[Category:Garage and shop]] | |
| − | + | [[Category:Tools]] | |
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