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Ch 041 / 38

Step 04.1 — Lay the chapter out as four separate kits

Step 1 of 38 with a helper · Chapter 04 — A/B drive units and front idlers

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gather Gather for this segment — steps 04.1–04.5 (~30 min)

Fasteners, Tools & Misc box

  • M3×5×4 brass heat-set insert ×4
  • M5 hex nut ×2

Printed parts

  • a_drive_frame_upper ×1 · bin 04-A
  • [a]_tensioner_right ×1 · bin 04-A
  • [a]_tensioner_left ×1 · bin 04-B

Tools and consumables

  • four trays or bags
  • masking tape
  • marker
  • caliper
  • soldering iron with the M3 insert tip
  • small flat screwdriver

Set out for later steps

  • the ten printed drive and idler parts
  • F695 bearing ×16
  • M5 precision spacer ×16

Already on the bench

  • both tension arms

Parts:

  • the ten printed drive and idler parts · set out now, fitted later
  • F695 bearing ×16 · set out now, fitted later
  • M5 precision spacer ×16 · set out now, fitted later
  • four trays or bags · tool

Do:

  1. Label four bench areas: A DRIVE, B DRIVE, A IDLER, B IDLER.
  2. Put a_drive_frame_upper + a_drive_frame_lower in the first, b_drive_frame_* in the second, front_idler_right_* + [a]_tensioner_right in the third, front_idler_left_* + [a]_tensioner_left in the fourth.
  3. Open one area at a time; mirrors never mix.

check Check

Ten printed parts placed, none left over. An eleventh is [a]_cable_cover or [a]_z_chain_retainer_bracket; bag those for Ch 07 and Ch 06.

helperHelper Counts the bearings and spacers into four labelled trays, one per assembly.

What you're looking at

Manual p.62 opens the A/B section: ten printed parts, four sub-assemblies. Two drive units, each a two-half frame holding bearing stacks with a stepper bolted underneath, and two front idlers, the same without a motor. They are the four corners the CoreXY belts loop around.

Source: Voron manual p.62 · Voron-2 STLs/Gantry/AB_Drive_Units · Voron-2 STLs/Gantry/Front_Idlers

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Next →Step 04.2 — Fix which assembly is A and which is B