Rapture Posted March 25, 2014 Report Share Posted March 25, 2014 Im having ago at grit blasting a few painted metal parts.The large dark grey area is the blasted section and the shiny patches on the dark grey is where i have gone over it quick with a bit of 400 git paper.Basically, im not sure if the grit blasting is taking off all of the paint OR it is taking off all the paint but just leaving a dull slightly pitted surface. And then by rubbing it down with 400 brings in the shine?Is the metal ment to be all shiny straight after blasting? Quote Link to comment Share on other sites More sharing options...
SAVAGE420 Posted March 25, 2014 Report Share Posted March 25, 2014 What is the wanted end result? Re painting or something? Quote Link to comment Share on other sites More sharing options...
Rapture Posted March 25, 2014 Author Report Share Posted March 25, 2014 What is the wanted end result? Re painting or something? Yea repainting. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted March 25, 2014 Report Share Posted March 25, 2014 What media you using? Quote Link to comment Share on other sites More sharing options...
Rapture Posted March 25, 2014 Author Report Share Posted March 25, 2014 What media you using? Aluminum oxide. I think is fine grade as its almost powder. Another thing concerning me is that when i run my finger over the blasted area theres alot of residue coming off. Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted March 25, 2014 Report Share Posted March 25, 2014 Considering the media is 180g at best, the 400 would be like the next stage if you were polishing. Blow it off when done, maybe clean with paint thinner, then tack rag, prime/paint done. Quote Link to comment Share on other sites More sharing options...
Rapture Posted March 25, 2014 Author Report Share Posted March 25, 2014 Considering the media is 180g at best, the 400 would be like the next stage if you were polishing. Blow it off when done, maybe clean with paint thinner, then tack rag, prime/paint done. Cool. Not looking to polish just repaint. The 400 was just a test to see if i had gone right down to the metal with the blasting. Was thinking about trying some glass grit to see if it leaves less dusty residue? Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted March 26, 2014 Report Share Posted March 26, 2014 Blasting will usually leave a kinda dull finish. The dusty residue should be wiped with a good cleaner suitable for paint prep. Quote Link to comment Share on other sites More sharing options...
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