Liquid Mask for Powder Coating

[FigureLLC]

Does it exist?

[FigureLLC]

no? i feel like this should exist.

[Harleydad]

Yes, it does exist. Now I just to find a link.

[Harleydad]

This is the stuff I saw. Does it work ? I don't know, never tried it.
http://www.hobbylinc.com/htm/div/div3020.htm

[Banditperformance]

HD, I have that stuff, and use it for airbrushing. No, it will not withstand the heat of PC. When it dries, it's like a rubbery substance. Not to sure how hot it can withstand though. I should do some test panels one day.

[FigureLLC]

it'd be interesting for sure to see if it works.

i have a project i'll be working on in the near future that will require weld beads to be a different color than the members they join (the polished aluminum beads will not be coated), and i would expect trouble from the irregularity of the surface if i used a tape or adhesive type mask. at the moment, i think the wet sponge paint brush technique to remove the powder after application might be the best shot. i expect that to take much more time than applying a liquid mask, though.

[Harleydad]

Originally Posted by Banditperformance

HD, I have that stuff, and use it for airbrushing. No, it will not withstand the heat of PC. When it dries, it's like a rubbery substance. Not to sure how hot it can withstand though. I should do some test panels one day.

Could you use it to mask, put the part in the oven until just before the powder starts to flow (a minute or two). Then pull it out to remove the mask and back in for full cure. (same thing that I do with the tape, you get a much cleaner line).

[Banditperformance]

I have wondered that at times. I also do the "flow and de-tape" trick. Got to try it one day when I remember Damn old age LOL

[FigureLLC]

ok, so i finally tried the liquid mask experiment last night. i used this stuff (i think):



results: total failure.

experiment 1: flow and demask. by the time the powder flowed out, the mask was liquified.

experiment 2: full cure and demask. the liquified mask outgassed so violently that it sputtered onto the clean sections, and it cured into the powder and adhered to the part.

on the bright side, for wet paint it did work well for masking some chrome that i couldn't find tape that would stick to. it took a long time to dry, like 24hr.

[FigureLLC]

bump. my update didn't ever show up, that i saw. i was thinking of trying rubber cement.