Step 06.23 — Even the four belts by hand¶
Step 23 of 42 with a helper · Chapter 06 — Z axis (and Chapter 06b — Gantry squaring)
Parts: none.
Do:
- Pluck each Z belt on the short run between the top belt clip and the Z idler.
- Bring the four notes together with each corner's Z idler tensioner bolt: 2.5 mm key from below, clockwise for tighter.
Check
All four belts sound within a semitone of each other, and lifting one gantry corner moves all four carriages together.
Helper Plucks each Z belt in turn and says which note sounds lowest.
What you're looking at
The Z idler tensioner: the small bolt standing proud below the idler. Plucking a belt is a rough tension reading, and the four Z belts must be close to equal or QGL will not repeat. The measured 140 Hz target waits for Part B.
Tip
The CAD idler height is the 250 machine's. There is one of these at each of the four corners either way.
Source: Voron manual p.121 · Voron docs § Secondary printer tuning — A/B and Z belts · CAD: Voron 2.4r2 STEP @ de7e89d