Batch B04Checkpoint

Checkpoint B04

Checkpoint · Batch B04 — XY joints + X carriage

• Gate B passed before B04-P1 started
• Printed M3 holes in both XY joints and both carriage halves caliper 3.40 mm ±0.10
• (kit day) MGN12 carriage screw pattern confirmed against x_frame_V2TR_MGN12_left/right before heat-sets
• (kit day) Omron probe barrel measured (8 mm vs 9 mm) — correct probe_retainer_bracket variant confirmed
• Confirmed X-carriage is x_frame_V2TR_MGN12_left/right (V2TR/Clockwork-2), not the superseded MGN9 carriage

Batch B04 printed: plate 8 of 22, 65.8 of 157.0 h. 1 gummy worm.

Common mistakes

• Grabbing a superseded MGN9 X-carriage file by mistake — LDO Build Notes flag this explicitly. V2TR is the right file: it is the carriage shared by the V2 and the Trident.
• Committing heat-set inserts into the carriage before the real carriage has been offered up on kit day.
• Reaming a printed hole instead of calipering it and fixing the profile.

Next

Assembly: Gantry (p.82–107). Printing: B05 — Z joints + Z chain.

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