What's the best blast media for removing the old paint from my Jubilee enclosures.
Hi John -
I only use glass oxide ( glass beads ) which is not very aggressive against paint - much faster and easier to use chemical paint stripper first then bead blast. I have no experience with more aggressive media such as emory.
Hope this helps- Richard
Garnet is the usual media for fast paint removal from a ferrous base but there are many grades. Glass beads, typically 30 microns, are OK but less aggressive / slower removal rate of unwanted material, but beware don't get this stuff near your eyes.
Once you reach base metal with whatever media you select, get the part painted or better still passivated with a zinc phosphate (Zn3(PO4)2) dip for a few minutes, rinse, dry and paint. Unprotected freshly blasted ferrous material will almost rust before your eyes!
For sensitive materials E.G Carb bodies try Walnut husks (seriously!).
More info here:
This is just a dip example available from Frosts but there are other Zn3(PO4)2 dips / conversion products out there :
Thanks for your replies.
Has anyone used Nitromors or similar to remove paint.
Nitromors used to be great but I think they must have removed some of the ingredients as recently it barely removes anything. Frost POR15 Strip is MUCH better. Not cheap at £23 per quart but paint flakes off before your eyes. Be careful however as it melts plastics etc so only use a metal container if you are pouring out a small amount to paint on to the thing you are working on.