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Step 04.3 — Heat-set the two inserts in a_drive_frame_upper

Step 3 of 38 · Chapter 04 — A/B drive units and front idlers

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Parts:

  • M3×5×4 brass heat-set insert ×2 · Fasteners, Tools & Misc box
  • a_drive_frame_upper ×1 · bin 04-A
  • soldering iron with the M3 insert tip · tool

Do:

  1. Find the two blind 4.7 mm bosses either side of the motor bore on a_drive_frame_upper, ~56 mm apart.
  2. At the temperature written on your iron, press each insert straight down until flush, part held flat. Let it cool.

Check

Both inserts flush and square. b_drive_frame_upper takes no inserts; bosses on it mean you picked up the A frame.

What you're looking at

Manual p.64: the heat-set inserts for this chapter. Only four, two into a_drive_frame_upper and one into each tension arm. It is the only drive frame with insert bosses, so two blind 4.7 mm holes beside the motor bore are the A/B test.

Tip

if you ran the B03 insert pass that Step 00.16 plans, just confirm the two are present and skip ahead.

Source: Voron manual p.64 · LDO heat-set insert tool guide

← PreviousStep 04.2 — Fix which assembly is A and which is B

Next →Step 04.4 — Heat-set one insert into each tension arm