SU.961 Sprockets for roller chain by standard (the missing third of #961)

Asked (#961, Oct 24, in Spanish): nesting of parts inside the CAD, standard profile tables as in AutoCAD Mechanical, and sprockets.

Checked 2026-11-05: nesting is built and released (PartCraft's Nest flat parts, CadCraft's Nesting add-on; SU.755, NEST-CAD-PATH) and standard steel profiles are built (the shared section tables in CadCraft's Standard panel, PartCraft weldments, DetailCraft; UK sizes in /lab by SU.1192).

Built 2026-11-06 (sprockets-data): sprockets are a CadCraft add-on, Roller chain sprockets (id chain, off by default, in the lab): SPROCKET draws the real tooth outline for a chain number and tooth count; CHAINS lists the table; CHAINSOURCES names the catalogues. Table lib/chain/chain-table.json: 38 chains (ANSI 25 to 240, ISO 606 A series 08A to 48A with 085, B series 04B to 48B), pitch, roller, inner width and plate height read from nine public catalogues on 2026-11-06 and kept only where two agree (tools/chain/chain-sources.mjs, build-chain-table.mjs); NOT copied from ISO 606 or ASME B29.1. Left out: ISO 04C, 06C, 36A (one catalogue only) and plate heights the catalogues dispute (null). Found by the real rows: the default tip circle let the swinging roller hit the tip edge at 25 to 28 teeth, now 0.35 p above the pitch circle. Tests: test-chain-table.mjs 3326/0 (every chain draws and seats at 9 to 80 teeth), test-chain.mjs 298/0, add-on test 14/0, browser-chain.mjs 11/0 in /lab/cadcraft, catalogue entry + listing seeded (lab). Limits: the tooth form (2 % seat clearance, 80 degree seat half angle, tip, tooth width) is our generator's, not the standard's, and no sprocket was compared with a catalogue sprocket; CadCraft only (PartCraft, ModelCraft and SuperCad Studio hosts and Library items on the owner's seed go are not done).