The Workshop

Free tools from the
Build Theory workshop.

Small, genuinely useful utilities we built for our own trades and are sharing with GTA homeowners and DIYers. Bookmark this page — we add more over time.

Carpentry · TrimLive

Casing Cut Planner

Enter a door frame’s three sides, casing width, and reveal to get an exact cut list plus where to mark every 45° miter. Works in inches, ft/in, or mm.

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