12 feet of 1x6 boards
10 feet of 1x3 boards
wood lathe for back cross bracing
I used 1 1/4" and 2" finish nails to construct with glue but you can also use screws or pocket hole screws
2 - 1x3 @ 11 1/4" (long point measurement, one end cut at 30 degrees off square)
2 - 1x3 @ 20 3/8" (long point measurement, one end cut at 30 degrees off square)
2 - 1x3 @ 6 3/8" (long point to short point, both ends cut parallel at 30 degrees off square)
2 - 1x6 @ 26 1/8" (long point to short point, both ends cut parallel at 30 degrees off square)
2 - 1x6 @ 15 3/4"
1 - 1x3 @ 17 1/4"
2 - 1x6 @ 19"
Please read through the entire plan and all comments before beginning this project. It is also advisable to review the Getting Started Section. Take all necessary precautions to build safely and smartly. Work on a clean level surface, free of imperfections or debris. Always use straight boards. Check for square after each step. Always predrill holes before attaching with screws. Use glue with finish nails for a stronger hold. Wipe excess glue off bare wood for stained projects, as dried glue will not take stain. Be safe, have fun, and ask for help if you need it. Good luck!
This part is actually a little tricky - getting everything lined up just right. Just take your time and don't forget that the two sides need to be made in mirror so the cleats are on the insides. I used 1 1/4" finish nails and glue to attach.
Once you get the two sides done, everything else is a breeze. If you are nailing, use glue and nail from multiple directions.
Free plans to build this vintage x back step stool from ana-white.com
I ended up using scrap lathe strips for the x but if you had 1x3s, you can also do this. The X back actually adds a ton of strength to the back, so glue and screw or nail.