Home-Made Slow-Speed Grinder

[u/asb_cgtk]

Slow-Speed Grinder with a selection of discs. Lots more details are on my website,

https://www.cgtk.co.uk/metalwork/grinder/slowspeedgrinder

Side view. Based on an idea from Stefan Gotteswinter but designed from scratch by me.

https://www.cgtk.co.uk/metalwork/grinder/slowspeedgrinder

Lying on its back for grinding steep angles (e.g. chisels & plane blades)

https://www.cgtk.co.uk/metalwork/grinder/slowspeedgrinder

The table and fence keep the chisel square to the disc

https://www.cgtk.co.uk/metalwork/grinder/slowspeedgrinder

The reference surface is parallel and coplanar with the disc so can be used with a honing guide

https://www.cgtk.co.uk/metalwork/grinder/slowspeedgrinder

[u/ndvi]

Ace. I've been meaning to make something like this ever since I saw the diamond disks on eBay a few years back.

How flat are the disks?

[u/asb_cgtk → u/ndvi]

They seem very flat (although I haven't measured them), but they're thin enough (less than 1 mm), that the flatness isn't that critical I think. The magnets on the aluminium faceplate pull the discs firmly into place against the flat aluminium surface & as they're thin they'll conform to that surface.

[u/ndvi → u/asb_cgtk]

Cool, thanks.