Ch 057 / 48
Step 05.7 — Bolt the A drive to the bridge¶
Step 7 of 48 · Chapter 05 — Gantry: X and Y axes, XY joints, X carriage, titanium backers
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Parts:
- M5×10 BHCS ×4 · Fasteners, Tools & Misc box
Do: Drive four M5×10 BHCS, two into the upper slot and two into the lower, to snug, not torqued. If a bolt spins without pulling, its T-nut has not rolled: back it out and reseat the nut.
Check
All four bolts bite. The drive frame does not rock on the extrusion.
What you're looking at
Four M5×10 BHCS pass through the drive frame's flange into the T-nuts underneath. This is what turns the drive block and the bridge into one rigid rear corner; a bolt that spins freely means its T-nut never rolled and the corner is holding on three.
Source: Voron manual p.86