When choosing wood filler: there is a lot to there's a lot to choose from. We all use and do something different and say it’s the best way, but this is not true. The fact is, what works for some may not work for you, it’s just a starting point. The more you do the more you will develop your own method and preference for using wood filler.
How to make Wood Filler
When doing any woodworking project you will run across times that you need a good wood filler, to fill cracks or nail holes etc. . . . I found that using the dust from the type of wood you’re using works great. But how do you get it you ask, well I am glad you ask. A trick I use is to clean the shop vac out before I start sanding, make sure you clean the filter good. Then after I am finished sanding the type of wood I will be using, I clean the dust off the filter that's where you find the fine dust. Make sure you only sanded one type of wood. I fill up a small jar and label it the name of the wood I was standing. Then later: when I need let’s say cherry or walnut. I just get the one I need at the time. I put a little glue in the hole or crack, add a little dust and rub it in. After it dry’s: then lightly sand. This works great when I am doing a natural finish.
Minwax Wood Filler
When you are going to paint or use a light color stain, this wood filler works well. Goes on easy and dries fast, great for molding or any project that you are going to paint. It is not so good with dark stains, if you need to stain I would not use this, it’s a little hard to get to accept stain or get it to color match. The smoother you sand it the less it will accept stain.
Bondo Wood Filler
This wood filler is great for repair work, inside or out. I can’t say how it will take stain but on large areas to be reshaped or large cracks that need filled, I think you will like this product. Mix: then apply let sit for 30 min, then sand or start to reshape then paint.