Step 05.16 — Unpack and identify the titanium backers¶
Step 16 of 48 with a helper · Chapter 05 — Gantry: X and Y axes, XY joints, X carriage, titanium backers
Gather for this segment — steps 05.16–05.18 (~35 min)
Fasteners, Tools & Misc box
- M3 roll-in T-nut ×20
Ti backer set
- titanium Y backer ×2
- M3×8 FHCS ×20
Tools and consumables
- T10 Torx driver
Set out for later steps
- titanium X backer ×1
- M3×6 FHCS ×9
Parts:
- titanium Y backer ×2 · set out now, fitted later
- titanium X backer ×1 · set out now, fitted later
- M3×8 FHCS ×20 · set out now, fitted later
- M3×6 FHCS ×9 · set out now, fitted later
Do: Sort the three backers: the two matching long pieces are the Y backers, the odd shorter one is the X backer. Check they are drilled and countersunk, and count the holes: expect 10 per Y and 9 on X.
Check
2 Y + 1 X backer, hole counts written down, and you have at least that many M3 T-nuts. The set does not include T-nuts.
Helper Sorts the backers by length and lays each one beside the rail it matches.
What you're looking at
The titanium backers are three flat drilled strips that bolt to the extrusion face opposite a linear rail. A steel rail on an aluminium extrusion bows as the chamber heats; the titanium strip opposite pulls the other way and cancels most of the bow.
Tip
Backer lengths in the picture follow the 250 CAD. Sort by matched pair versus odd one, not by drawn length. A slightly bowed backer straightens as you clamp it down.
Source: Ti extrusion-backers README (tanaes) · Fabreeko backer set · West3D backer set · CAD: Voron 2.4r2 STEP @ de7e89d