Step 08.19 — Hang the tension arm — and leave it loose¶
Step 19 of 65 · Chapter 08 — Toolhead: Stealthburner, Clockwork 2, Revo HF, Nitehawk-SB V2
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Gather for this segment — steps 08.19–08.26 (~25 min)
Electronics 2 box
- CW2 Chain Anchor Tilted ×1
Fasteners, Tools & Misc box
- M3×25 SHCS ×2
- M3×30 SHCS ×1
- M3×8 SHCS ×2
- M3 washer ×1
- M3×20 SHCS ×1
Motor Kit box
- LDO-36STH20-1004AHG(VRN) NEMA14 pancake stepper ×1
Printed parts
[a]_latch×1 · bin 08-CW2
Tools and consumables
- 1.75 mm filament offcut
Already on the bench
- the guidler assembly
- the assembled extruder
- the extruder assembly
Parts:
- the guidler assembly · already on the bench
- M3×25 SHCS ×1 · Fasteners, Tools & Misc box
Do: Locate the guidler/tension arm on its pivot and pass one M3×25 SHCS through. Do not tighten it. This bolt is a hinge pin; torquing it locks the arm and kills filament tensioning.
Check
The arm swings through its full travel under finger pressure and falls back under spring load.
What you're looking at
The tension arm's M3×25 is a hinge pin, not a fastener. Tightened, the arm cannot swing and the extruder cannot tension filament at all; left loose, the arm swings and the spring does the work it was fitted for.
Source: SB manual p.25