What the heck happened ?

[outlaw17]

I am painting a buddies brand new helmet and I started of by scuffing the whole thing with red scotchbrite (which is probably my first mistake) I probably should have done it in 400 or so , anyways I based the whole thing black , then after an hour or so I masked out a checker pattern on the lower 1/3 of the helmet so I can just spray the white and have checkers , the top portion was going to be marblized , thus giving me more reason to start with the black . Now While I was masking for the white on the checkers I was finding that the black was not really sticking very well and was peeling up in a few spots but I carried on anyways , I finished the white and only had a few spots to touch up with black , then I covered up the checkered portion and proceeded with the marblizer and when I lifted my saran wrap it stripped off the paint in a few areas all the way down to the original white of the helmet, this had me qutie pissed but I realized that these areas would be covered with more designs so I carried on even more . HOK states that after you marblized you need to cover with Intercoat clear so I did this with SG100 and this is where all hell broke loose, I puit on 1 fairly wet coat and after a few minutes I checked on it and holy crap a bunch of the black in the checkered pattern started to slide which I find wierd because the white was put on after the black but the black is sliding into the white , why is this ?
How long should I wait before I scuff the intecoat so can coverup the areas that slid ? /ubbthreads/images/graemlins/beat.gif

 

[wammied]

Sounds like the black had nothing to hold onto. and the first coat of clear was to heavy.
I'd give it a day, scuff with the 400, rebase the black and then make your first coat of clear a light tack coat. That protects the base from solvent in a heavy coat of clear. After that flashes you can put on a heavier coat and go from there.
Good luck,
Mike

 

[rex]

Whoa,that's weird big time.I only have 2 guesses.The main one is lack of a good cleaning if it had an excess of mold release left on it and a weaker reason would be the scuff(I know better with you).I love the wet scuff with those scotchbrites,not only will it scuff twice as good with less effort but with a drop or 2 of Dawn in the spray bottle it'll help pull some of the crap off before you do the final wash.Was this a real helmet or one of those plastic pieces of junk?

 

[outlaw17]

I think it was a real one Rex , it was a pretty expensive racing one , not plastic but Kevlar or something . Take a look at the final results in my gallery . Next one is gonna be scuffed much better . After a few people seen this one they all want theres done now

 

[rex]

Yeah,I'm gonna say it was the initial adhesion was poor.Kind of weird with a red scuffy.Use water next time with it and it'll look just like you used paper,just not all the work.It's rare I ever scuff dry because the scratches seem deeper but cut less evenly.