Foamforce
Elite member
I tried Minwax (oil based) followed by airbrushed acrylic for the first time in a Nutball. I brushed the poly on thick, let it soak for a few minutes, then wiped off the excess with paper towel. That was a cleaner and faster process than I expected, so that was good. I let that dry for 24 hours.
The next day I put on a coat of yellow acrylic. I put it on fairly heavy and my paint was maybe a bit too thin, but not so thin that I had any dripping. There was zero delamination of the foam board, so that was good. I painted a non-poly’ed piece of scrap as a control subject, and that badly delaminated, so I can see that the poly was very helpful. However, I was disappointed to see that after the paint, the Nutball warped a little. Just enough that the elevator became notchy.
What do you think I could do differently to prevent the warping? Do others use multiple coats of poly? Maybe I just made it too wet with the thin paint? Also, I realize the nutball is the worst case scenario because it’s a single flat sheet, but if I can avoid warping this, then I can avoid warping any plane.
Thanks!
The next day I put on a coat of yellow acrylic. I put it on fairly heavy and my paint was maybe a bit too thin, but not so thin that I had any dripping. There was zero delamination of the foam board, so that was good. I painted a non-poly’ed piece of scrap as a control subject, and that badly delaminated, so I can see that the poly was very helpful. However, I was disappointed to see that after the paint, the Nutball warped a little. Just enough that the elevator became notchy.
What do you think I could do differently to prevent the warping? Do others use multiple coats of poly? Maybe I just made it too wet with the thin paint? Also, I realize the nutball is the worst case scenario because it’s a single flat sheet, but if I can avoid warping this, then I can avoid warping any plane.
Thanks!