Step 05.15 — Stop the carriages running off¶
Step 15 of 48 · Chapter 05 — Gantry: X and Y axes, XY joints, X carriage, titanium backers
Parts:
- rubber rail stopper ×4 · tool
- masking tape, if the stoppers run short · consumable
Do: Fit a rubber rail stopper, or a doubled tape flag, near each end of both Y rails so a carriage cannot run off. Keep the stoppers: LDO reuses them under the Z joints during the Ch 06 install. src
Check
Each Y carriage is captive; the manual warns that "dropping the carriage likely irreparably damages it".
What you're looking at
A linear-rail carriage keeps its ball bearings only while it is on the rail: run it off the end and they scatter. The renders show the Y rails on the undersides of the C extrusions, each with one carriage and a stopper near each end.
Tip
The CAD Y rails are MGN9 300 mm; yours are 400 mm (Step 05.10). The stoppers go near the ends wherever those ends are.
Good stopping point · ~30 min since the last one
both Y rails down and tightened, end M5/M3 T-nuts loaded, both carriages captive. Do not fit a backer now: start one only when you can finish it.
Source: Voron manual p.88 · LDO Build Notes § Voron 2.4 build FAQ · CAD: Voron 2.4r2 STEP @ de7e89d