Batch B01Before you start

Before you start Batch B01

Before you start · Batch B01 — Z drive assemblies

Every Z-drive part with a bearing seat, so it waits for Gate B (the 625-2RS bore test) — which now runs early, on a caliper across the printed pocket, so this batch prints second, straight after B00.

The first real parts. They hold bearings, so Gate B has opinions and the final say.

Time: 22.8 h (2 plates) — PrusaSlicer 2.9.6 estimates.

Sessions: 2 plate starts (~5 min hands-on each, 15.2 h and 7.6 h unattended) + ~15 min inspect + ~10 min sort into bins.

Prerequisites: Gate B passed (Step B00.7 — the 625-2RS pocket calipered and seven real inserts set, both run early on what is already on the bench; Gate B's bearing press and MGN12 rail row wait for the kit and gate nothing on this plate). Gate A alone does not release this batch. Note: fully completing the Z Drives and Idlers assembly chapter also needs the accent parts from B02 ([a]_z_drive_baseplate_a/b, [a]_belt_tensioner_a/b, [a]_z_tensioner_9mm_x4), printed straight after this batch and long before the kit — plan §9 lists hard prerequisites B00;B02 for that chapter.

Printed parts

STL	Repo path	Qty	Colour	g ea	Bin
z_drive_main_a_x2.stl	Voron-2 STLs/Z_Drive/	2	Black	39.4	02-Z0, 02-Z2 (one each)
z_drive_main_b_x2.stl	Voron-2 STLs/Z_Drive/	2	Black	39.4	02-Z1, 02-Z3 (one each)
z_drive_retainer_a_x2.stl	Voron-2 STLs/Z_Drive/	1 (second copy; first was on B00)	Black	19.5	02-Z2
z_drive_retainer_b_x2.stl	Voron-2 STLs/Z_Drive/	2	Black	19.5	02-Z1, 02-Z3 (one each)
z_motor_mount_a_x2.stl	Voron-2 STLs/Z_Drive/	2	Black	11.9	02-Z0, 02-Z2 (one each)
z_motor_mount_b_x2.stl	Voron-2 STLs/Z_Drive/	2	Black	11.9	02-Z1, 02-Z3 (one each)
z_tensioner_bracket_a_x2.stl	Voron-2 STLs/Z_Idlers/	2	Black	13.0	02-Z0, 02-Z2 (one each)
z_tensioner_bracket_b_x2.stl	Voron-2 STLs/Z_Idlers/	2	Black	13.0	02-Z1, 02-Z3 (one each)
deck_support_3mm_x8.stl	Voron-2 STLs/Panel_Mounting/	8	Black	1.1	02-deck

Deck-support thickness (verify)

LDO's Rev D printed-parts guide says "our kit ships with 4 mm deck panels, use 4 mm deck support clips," but the Rev D 350 BOM lists the deck panel as 3 mm acrylic (the 4 mm panel is the bottom panel). The size-specific BOM wins: print deck_support_3mm_x8 ×8 now, and measure the deck panel at Ch 00 Step 00.4 — if it measures 4 mm, reprint deck_support_4mm_x8 (8 g, 30 min). The panel only exists on kit day, months after this plate, so the 3 mm set is printed on the BOM's word and the reprint is the one plate the build may still owe when the cartons land.

Hardware: none.

Read first

• The parts come in mirrored pairs: every _a file has a _b twin, and each Z corner takes either the a set or the b set — two corners of each. They are not interchangeable, so Step B01.8 sorts them into the four corner bins 02-Z0–Z3 by hand, not four identical sets.
• Checkpoint after B01: caliper each z_drive_main and z_drive_retainer 625-2RS pocket, 16.30 mm ±0.15 (measured off the STL, as at Gate B). The bearings arrive with the kit, so pressing a real 625-2RS (16 mm OD) in by thumb, no rocking, is a kit-day row. No inserts now: the kit's own go in at Ch 02 Step 02.04. Check the 4 mm/3 mm deck-support call above.
• Most commonly reprinted here: z_drive_main_* — the largest single parts in the batch, most exposed to warp at the corners.
• Plate B01-P1 is the longest single plate in the whole build (15.2 h) — start it in the morning, not at bedtime.

Helper steps: 4 · B01.2, B01.5, B01.7, B01.8

← PreviousBatch B01 — chapter overview

Next →Step B01.1 — Filament prep