# Knife-edge cam follower, 8 × 6 mm, 60 long

> What is a knife-edge follower?

- Category: Hardware › Mechanism parts
- Kind: Modern device
- Basis: Xem Studio design following Brown's figure (1868); true size, no printing allowance
- Page: https://xemstudio.com/objects/knife-edge-follower-8/ · JSON: https://xemstudio.com/api/geometry?object=knife-edge-follower-8 · Plain text: https://xemstudio.com/objects/knife-edge-follower-8/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 8.0 | 60.0 | 6.0 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- 8 × 6 mm follower rod with a 100° knife-edge point: the simplest follower, exact contact on any convex profile, but it wears fast.
- Xem Studio design following Brown's figure; true size, no printing allowance (apply your own to the mating features).

## Sizes

| dimension | value |
|---|---|
| section | 8 × 6 mm |
| length | 60 mm |
| point | 100° included |

## Where the files are

- Henry T. Brown (1868, public domain): [Five Hundred and Seven Mechanical Movements — scan on archive.org](https://archive.org/details/fivehundredseven00browiala) — web — Publisher's page; dimensions are facts
- 507movements.com: [Brown's movement No. 136: figure, his text and an animation](https://507movements.com/mm_136.html) — web — Publisher's page; dimensions are facts
- Xem Studio: [drawing](https://xemstudio.com/objects/plate-cam-knife-follower-mechanism/) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/knife-edge-follower-8/index.json

- knife-edge-follower-8: [STEP](https://xemstudio.com/files/hardware/knife-edge-follower-8/knife-edge-follower-8.step) · [STL](https://xemstudio.com/files/hardware/knife-edge-follower-8/knife-edge-follower-8.stl) — follower, edge at y = 0

## Questions

**What is a knife-edge follower?**

8 × 6 mm follower rod with a 100° knife-edge point: the simplest follower, exact contact on any convex profile, but it wears fast.

## Fits with

- [Plate cam with knife-edge follower (simple harmonic rise)](https://xemstudio.com/objects/plate-cam-knife-follower-mechanism/)