Ha- so glad you asked.
Just about the nicest ribbon sander one could dream up.
Back in the day they were the world standard- built primarily for pattern makers shops and so dear that only this trade cashed out for them.
They come to market now as pattern shops close which is how I got my hands on this one.
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The platens are 14” tall and the machines come with a set of eight in various widths and face profiles- flat and convex.
These are capable of very high standard work in sanding deep profiles square or to selected angles.
‘Zimmermann’ means woodworker in German and as far as I can tell the firm manufactured high standard machines all primarily for the pattern makers trade- band saws, wood lathes sanders etc.
They are not common in the States.
The pattern shop this came out of had a perfectly beautiful Zimmermann pattern makers lathe with all the accessories on the block- sold for a paltry $1200 if I recall...
Virtually free for that class of machine.
But... too much for my shop which needs nothing more than the small wood lathe I have.
Perhaps true for many shops hence the lack of interest..
I will make up the mold segments and do all the fitting work for this repair on the profile sander.