compact final version 25 mm Paddle Shaft
Created today
Description
U-shaped holder for a 25 mm paddle shaft with a rack-and-pinion lock driven by a 12 × 10 mm N20 geared motor (3 mm output shaft). Laid out as separate flat parts for printing.
What it fits
- 25 mm round paddle shaft in a 27 mm U-slot.
- N20 motor body 12 × 10 × 24 mm, in a pocket with 0.2 mm clearance per side.
- Motor retainer plate 24 × 14 × 3 mm, in a recess with 0.2 mm clearance.
Check before printing
- Confirm your N20's body length and shaft length. Body length is a parameter.
- The shaft passes through a 5 mm hole (1 mm radial clearance), which also clears the gearbox boss.
Not included
- No limit switches or stall sensing. The motor needs one or the other.
- The slot is open through in Z, so paddle support depends on the mounting.
Parts
Housing, sliding rack, pinion, motor retainer plate and guide cover plate, spaced at least 10 mm apart. PETG or ASA recommended.
Images
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