Slotted bar 80 × 20 × 6 for the mangle pinion's shaft (slot from R28 to R52) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/mangle-slot-bar-r28-52/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)
Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
Catalog version: 2026-10-20

Overall (mm): length 80.0, width 20.0, height 6.0
- Fixed bar above the pin wheel with a Ø8 hole on the wheel's axis and a 6 mm slot along a radius from 28 to 52 mm: the pinion's Ø6 shaft slides in it, inside the pin circle for one direction and outside for the other.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

dimension  value
bar  80 × 20 × 6
slot  6 mm, R28 → R52
hole  Ø8 at the wheel axis

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Henry T. Brown (1868, public domain): Five Hundred and Seven Mechanical Movements — scan on archive.org — web — Publisher's page; dimensions are facts — https://archive.org/details/fivehundredseven00browiala
- 507movements.com: Brown's movement No. 36: figure, his text and an animation — web — Publisher's page; dimensions are facts — https://507movements.com/mm_036.html
- Xem Studio: drawing — web — Publisher's page; dimensions are facts — https://xemstudio.com/objects/mangle-wheel-and-pinion-mechanism/

Free files (Xem Studio Design License, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/mangle-slot-bar-r28-52/index.json
API: https://xemstudio.com/api/geometry?object=mangle-slot-bar-r28-52