We blast them so the fab work goes faster.
The painter can just deal with it!!! if you was the car with metal prep prior to epoxy primer you wont have any problems IMO
but if you want to pay a guy to clean off all the crap just so you can do some welding .... then pay to have it blasted when your done....................... i think that sounds a little redundant to me .
Good luck with your painter
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