Step 1: What You Need
Step 2: Ready, Set...it's Done
Watch the video to see the magic.
I like to use this for repairs. I use a Brush to dust the edge. Put the parts together and apply glue. Once you apply the glue it instantly hardens. I then apply another dusting to renforcement the seam. Allow to cure for an hour or more before sanding, shaping or drilling.
As a filler, tape off area and apply alternate amounts of glue and Baking soda. For thick pieces of filler, allow 10 minutes between layers of 1/4 inch or more.
There is an exothermic reaction and the mix gets hot, so use caution. It is somewhat brittle at this stage. Once it cures it's rock hard.
Step 3: Endless Applications
Remember, be safe. Use eye protection. Acetone can be used for clean up. Use nail polish remover for getting glue off hands.