Sorry to bring this subject up again but I looked through the archives and can’t find an answer to my problem. I use “Createx” air brush paint from Micheal’s Art Store to paint my pinlines. Everytime I gloss over them I get separation right on the pinlines. I have sanded them with all different grits and I still get little spots of separation here and there. The rest of the gloss coat looks great except the 3 or 4 spots I get on pinlines. Sometimes the separation might be only a 1/4 inch in length and sometimes it might be a 4 inch spot. Any Ideas? Thanks.
I’d guess that there is some component in the paint that just won’t mix with poly resin. Try spraying a cover coat along the pins with some really cheap clear coat to seal them.
What type of clear coat do you suggest. I thought about hotcoating over the pinlines before I glossed over them. Do you think this might work. I know it will be an extra step but it will be better then sanding into the pinlines.Gregg
Howzit Gregg, You may be spraying to much paint which can leave an edge after you pull the tape which will cause separation since the gloss resin can't flow evenly over the edge. I use a little plastic roller to press down edges that I get even with Poscas. Aloha, Kokua
Definitely consider Kokua’s comments, he’s got many more years experience in doing laminations and color work than I do. Your tape line might very well have had too hard and edge on it, or in other words the paint was thicker in places.
By hotcoating over you might have the same thing going on with the hotcoat resin as you had with the gloss, many hotcoat resins and gloss resins are similar. Cover spray with an acrylic clear coat might work. The cheaper brands found with the $1.99 spray paints are less likely to have the components that might be incompatible with polyester resins. Good luck.
I like to spray a clear coat and scuff lightly with a scotchbrite pad before glossing.Part of the problem you guys are having is Silmar Gloss Resin…it takes too long to kick and will eat acrylic (and sometimes resin) pinlines.I like Reichold…Kokua uses Reichold also with no problems.Note:Silmar is good gloss resin…just not so hot for retro hotcoat color work.Just my opinion.
I’ve found that along with the paint being to thick in certain areas sometimes the tape being used can leave gum remains at the edges.Norton 3M auto tape is the best here.Solvent based acrylics occassionally attack the adhesive on the tape.Try using less thinners in your paint ( i.e; spray a little drier.)Definetly thinner spray and rub back with 600 wet and dry ( but dry ). See how you go.