Don’t use construction grade white-wood for your legs, it is seldom straight and true, plus it is frequently made from ripped down 2x4’s, and the ripped cut may not be ninety degrees. I use “select pine” (aka Radiata pine) grown on tree farms in New Zealand, and it is free of knots, twists and other imperfections, and is very clear-grained, it’s twice the price of the white-wood, but looks like furniture gradeand is great to work with. Buying cheap lumber costs more in the long run.
Bill in FtL