Well the glass dried and got a heavy sanding.
If you've ever used regular bondo, you know now it dries like concrete... which means you also know it can be a total pain in the ass to sand. So don't use regular bondo. Use a product called RageGold. It's 100x easier to sand.
However it can still be tricky to sand... so the insider trick to applying bondo is to mix it 50/50 with fiberglass resin... Doing so allows you to paint the bondo on with a brush.
You mix the bondo like your suppose to, then mix the fiberglass resin as directed, then dump the bondo into the fiberglass cup. Then mix then both together.
Once mixed you can paint it onto your paint.
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