RE: New? sanding CA joint technique
Ahhh, not to worry about the strength of the joint unless you are working with materials as thin as paper. The acetone only softens the surface of the CA a bit. Cured CA is extremely difficult to debond. The acetone evaporates in about 30 seconds anyway, so you have to hit the joint with the sandpaper pretty quick, and then add a few more drops of acetone as needed.
Another trick is to hit the centerline of CA hinges with a toothbrush and a few drops of acetone after the hinging job is complete. This gets any sharp, excess CA out of the hingeline and they bend a lot safer and smoother.
Ernie