Board is slightly curved to the center to keep Bondo mix from slipping off the board during mixing. I didn't realize how useful that was until trying to use Bondo and Fiberglass resin. This way you don't have to move much to reapply more product (ie. ).
![Dynatron Bondo BND-404 Bondo Fiberglass Resin, 404, 1 Gallon [us] Can](https://images.buynet.work/thumb.php?i=359830330&s=240)
