I’d like to wind some warps in advance of my David III arrival and assembly. How much loom waste should I allow for? TIA.

Check out Season 1, Episode 5 - Project Planning 101 for a PDF that outlines all you need to know about planning and winding your warps. If you are planning to wind any of the School of Weaving or JST projects/warps - loom loss is always taken in into account. Have fun with your new David loom!

If you are planning to weave JST patters/drafts -Jane always includes extra yardage for loom loss.