media or soda blasting before chop?

[cprince09]

So I think I read on here one day that it wasn't a good idea to do a chop and then media blast or soda blast, is that true? If so, why?

 

[sneakysnake]

You definitely want to blast first, chop second. The heat from blasting will cause the metal to warp especialy if it is under any stress from the chop. I made the mistake of blasting after and where I had added metal on the cross cut went from a perfect chop to having a dip that wouldnt come out.

 

[cprince09]

I thought that with the soda or media blasting it wasn't supposed to make as much heat? I guess it's still enough to warp it?

 

[sneakysnake]

You might can get away with it, but why risk it.I knew I had a lot of metal work to do and didnt want a raw metal cab sitting for a long time so I waited. Im sure if your careful and use the right media it may go smooth but wanted to tell what happened to mine.

 

[cprince09]

did you sand blast yours or use something else?

 

[rustybeercan]

did you sand blast yours or use something else?

Your truck has some great patina, shame to blast it off!

Beercan

 

[dmw56]

Soda will not warp metal.

 

[sneakysnake]

did you sand blast yours or use something else?

I did use sand due to to cost and my front yard for a blasting booth.So I guess then dont use "sand" after chopping.LOL

 

[Mike S.]

I've had two cabs blasted using Garnet (sp?). It makes it so much easier and nicer to work on plus it really shows you what you're up against. The shop that did both of my cabs does it on a time and materials basis, so I got the cabs as clean as possible before I delivered them. Saves a little $.

 

[moparcowboy]

soda won't warp!I wouldn't use sand on any sheet metal, I learned that the hard way also!

 

[moparcowboy]

soda won't warp!I wouldn't use sand on any sheet metal, I learned that the hard way also!

by the way I soda blast all welds before primer [cl

 

[rex1927]

Will soda remove rust?
I know what you are talking about with sand.I warped a T door good with sand.
If soda will remove rust,that would be best.

 

[cprince09]

I'm just gonna chop it then soda blast it. That way if I really screw up the chop its less money I'm out