Media blasting

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(References)
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*http://www.jalopyjournal.com/forum/showthread.php?t=143854
 
*http://www.jalopyjournal.com/forum/showthread.php?t=143854
 
*http://www.hotrodders.com/forum/sandblasting-cabinet-homemade-79837.html
 
*http://www.hotrodders.com/forum/sandblasting-cabinet-homemade-79837.html
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*http://www.ford-trucks.com/article/idx/5/007/article/Build_Your_Own_Grit_Blasting_Cabinet.html
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*Interior coating can be made from something soft, rather than hard (rubber?). Norton Sandblasting Equipment sells rubber curtains for this purpose.
 
*Interior coating can be made from something soft, rather than hard (rubber?). Norton Sandblasting Equipment sells rubber curtains for this purpose.
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==Where to get media==
 
==Where to get media==
 
Locally, online, cheaply?
 
Locally, online, cheaply?
  
 
==Dealing with dust==
 
==Dealing with dust==
When the blast media wears out, it will create more dust. Also, can use a [http://www.grizzly.com/products/1-HP-Dust-Collector/G8027 dust collector]. You essentially need a big fan with a big motor
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When the blast media wears out, it will create more dust. Also, can use a [http://www.grizzly.com/products/1-HP-Dust-Collector/G8027 dust collector].
  
 
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-136430-2.html .
 
Some creative solutions on dealing with dust are here: http://www.hotrodders.com/forum/blasting-cabinet-clouds-up-136430-2.html .
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==Blast cabinet visibility==
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Try an external light or two shining in the blast window, or inside the blast cabinet.
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Window can be made of tempered glass, with a replaceable polycarbonate film taped to the inside.
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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 can be 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.
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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 can be 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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Can't see inside your cabinet? Try a light or two shining in the blast window, or inside the blast cabinet.
 
 
==Different types of media==
 
==Different types of media==
 
List of various types of blasting media, and their purposes.
 
List of various types of blasting media, and their purposes.
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*Walnut shells
 
*Walnut shells
 
*Black beauty
 
*Black beauty
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*Crystal grit
 
*Silica sand (controversial: http://en.wikipedia.org/wiki/Silicosis)
 
*Silica sand (controversial: http://en.wikipedia.org/wiki/Silicosis)
  

Revision as of 19:05, 5 April 2008

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