The file 'Simple CNC’d Stool 3D Printer Model' is (stl) file type, size is 20.3KB.
This is a remix of ZenziWerken's "Le Tabouret Simple" design to mill from Southern Yellow Pine Stair Tread Commonly found ad the big box stores in the US. The stringers are 26.4mm thick so the mortises have been adjusted to accomodate that size.
https://www.lowes.com/pd/11-25-in-x-48-in-Unfinished-Pine-Stair-Tread/1000445323
You can fit 2 legs, 2 stringers, and the top out of 1 tread (11.25in * 48in) with very little waste. At ~$14, when I posted this, that's a very sturdy stool that looks pretty good for a bargain price.
Stool_Leg.stl | 27.8KB | |
Stool_Strecher.stl | 23.1KB | |
Stool_Top.stl | 42.7KB |