I've occasionally used the 2-part auto bondo (pink), that is used to repair sheet metal or paint defects, to fill in the coarse end grains, or to fill in chips, of some projects that are to be painted (not stained). This product hardens well & quickly sands well to produce a smooth finish. I've bought it in small tubes at automotive stores.
How many of you more experienced woodworkers use this product & how does this product compare to the Bondo wood filler available at big box stores such as http://www.lowes.com/pd_8460-98-2005...-81b32bcd8fca? Does this last bondo product, or other similar brand, result in a good hard surface that is easily sandable & moves with wood?
If you have a recommendation for a better product altogether please do so.