Q
Quazz209
I have been having issues with my prep on bare plastic bumpers the last 2 times I have attempted. (Subaru, and aftermarket). I start with a scuff pad and scuff paste to clean. Hose everything down and wipe with waterborne wax and grease remover. I think shoot epoxy that has been reduced about 25% to limit sanding and to get the primer to lay down smooth in the odd shapes in the bumpers grill. This most recent time I even left the bumper out in the sun for at least 1 hour with temps in the mid 80s. Then proceed to wax and grease, tack cloth and shoot my base. I shoot DBC base exclusively with the DT series reducers.
I shoot 1 or 2 light base coats before the problems arrive. Everything looks perfect then on usually the 3rd coat of base I start getting wrinkling of the primer in sparodic locations on the bumpers. Some very small (1/4") while another may be in a line 2" long.
The first time it happened the temps were cold and i thought i rushed the epoxy and the solvent in the base caused the wrinkling. this time however the temps were greate and I had a suface temp well over 100F before i brought the bumper back inside.
What do you guys use for a procedure on these bumpers. I was taught to scuff, seal, base, and clear. Especially for these production style jobs but the epoxy as a sealer does not seem to be working out well for me.
I am open to any suggestions or recommendations on what I am doing wrong or other methods/products. It is obviously related to something I am doing since I have been able to replicate twice in a row now.
Thanks
I shoot 1 or 2 light base coats before the problems arrive. Everything looks perfect then on usually the 3rd coat of base I start getting wrinkling of the primer in sparodic locations on the bumpers. Some very small (1/4") while another may be in a line 2" long.
The first time it happened the temps were cold and i thought i rushed the epoxy and the solvent in the base caused the wrinkling. this time however the temps were greate and I had a suface temp well over 100F before i brought the bumper back inside.
What do you guys use for a procedure on these bumpers. I was taught to scuff, seal, base, and clear. Especially for these production style jobs but the epoxy as a sealer does not seem to be working out well for me.
I am open to any suggestions or recommendations on what I am doing wrong or other methods/products. It is obviously related to something I am doing since I have been able to replicate twice in a row now.
Thanks