This is my effort to sharpen cutter and drills.

I have made a jig which holds a collet set and I have fitted a collar with a grub screw which with a dowel with equaly spaced holes so I can set first tooth to correct position and length firstly then release the side clamp rotate to next hole and reclamp whilst holding up to face then regrind next tooth.

David

A selection of good ideas!

I built the Hemingway Kits ‘Worden’ T&C grinder but as designed will handle only 2- and 4- tooth milling-cutters.

It could be made with little modification to take a hexagonal body though, for 3-tooth cutters. (A triangular-section body would not give much room for larger cutters.)

It won’t sharpen helical flutes, at least not in original trim. A suitable holder might allow tap sharpening (straight flutes).

What it will do though, is sharpen lathe and shaper tools, useful particularly for critical profiles such as for screw-cutting.*

An attachment offered as an additional kit allows sharpening slitting-saws.

It’s a bit slow to use as it does not have a rapid indexing method but that’s not usually important. I also found the leadscrew arrangement could be better, so I usually disengage that and slide the table manually – one hand on each end of the table for steady control. The basic machine is otherwise fine, and it would not be too hard to make other cutter-holder arrangements for it.

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I’ve also still to complete a Blackgates-supplied ‘Stent’ T&C Grinder, with Giles Parkes’ modification**, but am a bit unhappy about the massive overhung mass of the motor on top of the column.

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* I recall a rather sad conversation on this site with someone puzzled how to use the ‘Worden’ for sharpening lathe tools, held in a block that sets the tool at right-angles to the main tool-slide axis for grinding the sides. The geometry somehow eluded him.  I hope he twigged it eventually.

** Parkes, G. Stent Modifications. Model Engineers’ Workshop, No. 108 Aug-Sept 2005, pp28-29