[andrewbartels1]

What this does

Adds the tools both agent sessions were missing when they built the U-joint demo. Each one is checked live on SolidWorks 2026 by tests/live/test_live_sw_ujoint_tool_gaps.py (8 tests, all passing).

Gap	Fix	Checked live
Face mates	add_mate takes face_a / face_b: a point on the face, in that part's own coordinates. Only that component's faces are searched, so a pin and its hole can't be confused. add_mate is now stable.	Two face mates seat a pin in its hole: axis exactly 20.0 mm from the plate's origin, the pin spanning 0-30 mm through the plate
Fix, float, flexible	New tool set_component_state. To change only solving, it passes back every setting it read.	A part floated and fixed again; a sub-assembly made flexible with suppression, visibility, configuration and BOM unchanged
Angled planes	create_reference_plane takes angle with an axis; create_axis now names the axis it made	Exactly 40.000° from the Top Plane
Planes from a face	create_reference_plane takes face_point; sloped faces work	Exactly 5.000 mm off a 3-4-5 slope
Angled chamfers	add_chamfer takes angle and flip	2 mm at 60° removes 138.56 mm³; flip swaps the slope from 60° to 30°
both_directions looked ignored	It always worked, but the reply echoed direction: blind. The reply now gives the end condition SolidWorks used.	z from −10 to 10; the reply says MidPlane
Thin walls	New thin_side input; an open outline works	A bent plate of exactly (80 + 40) × 6.35 × 38.1 = 29,032.2 mm³, one body
Plain dicts	The tool boundary validates a dict as the tool's input model, so every tool can be called from a script	Every live test calls the tools with dicts

The stale check_interference result was the router cache that #213 removed. The live test confirms it: 1 overlap before the mate, 0 after.

Notes for review

• A read-only probe showed that a component's faces report part coordinates, wherever the component sits. So no transform is needed (recorded in design.md).
• add_chamfer always called the angle-distance chamfer type (the code's comment said equal distance). At the default 45° nothing changes.
• The export file tools no longer require format_type, which they ignored anyway.
• The per-tool dict fallbacks are gone, now that the boundary handles dicts.
• Live captures now stop with a clear message when SolidWorks is minimized, instead of saving blank frames.
• Tool count: 155 → 156.
• The plan is openspec/changes/ujoint-tool-gaps/.

Checks

• Full mock suite: 3,714 passed, 100% coverage.
• ruff and mkdocs build --strict are clean.
• Live: 8 of 8 passed on SolidWorks 2026.

The demo GIFs are on the Demos page under "The tools the U-joint was missing", and in the comments below.

Closes #209

[andrewbartels1]

Live demos on SolidWorks 2026, one per test in tests/live/test_live_sw_ujoint_tool_gaps.py (8/8 passed). Every tool call is captioned as it runs, and each GIF holds its result for 5 s. They are also on the Demos page under "The tools the U-joint was missing".

A pin seated in its hole by two face mates

Interference: 1 overlap, then 0 once the pin is seated

Fixed, floating, flexible and rigid again

A bent plate from an open outline

Both directions, and the reply says MidPlane

A 60 degree chamfer, and flipping it

A plane at 40 degrees about an axis

A plane off a sloped face