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Author Topic: Quorn Tool & Cutter Grinder  (Read 2178 times)

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Quorn Tool & Cutter Grinder
« on: June 23, 2020, 07:38:38 am »
Now here's something that I don't see every day:

Quorn Tool & Cutter Grinder
Long a favourite amongst model engineers - and based on the Deckel SO and SOE machines - the Quorn was designed by Professor D. H. Chaddock and available only as a kit of parts for completion at home.
lathes.co.uk


I belong to a model engineering society that owns this grinder, whose provenance is unknown to the current membership. It has been sitting unused for some time, so I signed it out just to see what it will do.

It's an amazingly complex machine, with more knobs and dials than a WW2 submarine, and it's supposed to be able to sharpen just about any tool bit or milling cutter a model engineer could ever want.

I'm beginning to figure it out. I sharpened a 1/4" square tool bit today, and it certainly looks better than anything I could do freehand on a grinding wheel. Next task is to try a horizontal milling cutter....

Does anyone else have one of these?

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Bob

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Re: Quorn Tool & Cutter Grinder
« Reply #1 on: June 23, 2020, 10:16:18 am »
I once worked at a place that had a whole room full of such tool & die grinders. It was a custom injection molding house that had their own mold making shop staffed with journeyman and master mold makers, thus needed full custom tool making capabilities. They also had a well equipped EDM shop and full tool tempering kilns.

Alas, though I occasionally did make some personal use of a lot their equipment, I only did very minimal tool sharpening on the grinders and diamond cone wheels, so never really learned much about their advanced capabilities. I was always afraid that I'd screw something up for the mold makers who did truly depend on such equipment.
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Re: Quorn Tool & Cutter Grinder
« Reply #2 on: June 23, 2020, 03:16:56 pm »
Well, at least if I screw up here no one will know but me.
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Bob

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Re: Quorn Tool & Cutter Grinder
« Reply #3 on: June 24, 2020, 07:18:54 am »
Hi Bob,

It might still be possible to buy the castings for this cutter grinder they used to be available from Model Engineering Services who I bought castings to make a milling machine many years ago, I was going to build a Quorn but our model engineering club bought a Clarkson tool grinder so I never did; a lot of work for occasional use.  There was a book written on its use by its designer which is still available.  You might find it useful.

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Take care and stay safe.

Tony.
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Re: Quorn Tool & Cutter Grinder
« Reply #4 on: June 24, 2020, 08:13:32 am »
Thanks, Tony.

Chadwick's book came to me with the grinder, so I have the benefit of it for free.🌞

As for making my own grinder, I'm nowhere near as good a machinist as is necessary, so I'm glad the club has this one.

I've been following your work on the new layout and am suitably impressed. Keep up the good work!

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Bob
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