Uses for worn multitool blades

[olderdan]

I have been wood floor laying lately and have worn out a couple of multitool blades in the process, as ever I hate to throw away something that can be further used so I experimented with them.
At work we had a pneumatic oscillating toolpost attachment for an old lathe for polishing tube forming mandrels which is what gave me the idea of using an electric alternative.
Multitools are a wood cutting and sanding item but with a few blade mods they can be used for a lot more.
Attaching an old toothbrush head makes a super grout cleaning tool, a small wire brush, a small fine grit stone for lapping parts, an alloy pad is good with diamond paste and those self adhesive furniture protective pads charged with a suitable medium, I am sure there are more uses to be found.
The speed these things run at makes short work of most tasks. The wire brush is one of the most effective as instead of the bristles trailing back and forth they actually work on the ends.
The blade bodies can be drilled so a couple of 3mm screws will attach most things. It is not worth machine mounting as hand held gives a better feel for what is going on. Mandrel speed about 100rpm.