I use wood dust (from sanding) mixed with PVA.
Right on, I use old credit cards or similar to ensure that only thin coats are applied and the flimsier 'fake' ones work well for fine finishing with 'spot'/glazing putty, which I prefer for finish coatings Vs trying to get the much harder to sand 'Bondo' properly finished without damaging the much softer surrounding wood.
Thanks for the tip! Do you mean this product?For clear top coats (lacquer, etc), Famowood makes a great line of latex based wood fillers - I've found the natural, birch or maple colors to blend well with whichever plywood I'm using at the time.
Thanks for the tip! Do you mean this product?
FAMOWOOD Original Wood Filler - FAMOWOOD - Products
How well does it take stain?