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Rear toolpost for M Type Drummond lathe

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David George 111/03/2019 14:26:44
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753 forum posts
261 photos

Hi having had a few crunches mainly caused by Dixon toolpost not locking I decided to make rear toolpost for parting off to ensure a more solid hold on the part off blade. I got a casting from another member on here for the base and then I have designed a top to hold the blade solidly.

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So far so good will post more soon.

David

Hopper12/03/2019 09:12:27
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3515 forum posts
68 photos

Looks good. I have one of Geoff's castings too. Got as far as machining the base but got stuck with the top turret by buying at great expense a foot of square bar that was 2" instead of the required 1.5" or so. So have been procrastinating on whittling the lump down to size. I bought a T section parting blade from Eccentric Engineering, a nice one about 2mm wide by 13mm deep. Plan to make the turret to mount the blade directly. Keep us posted on how you go.

David George 116/03/2019 07:30:04
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753 forum posts
261 photos

Got a little closer to finishing. Machined the top pieces to line up with casting and after making a 15 degree cutter cut the dovetail to clamp the tool blade.

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David

Philip Rowe16/03/2019 11:07:21
167 forum posts
14 photos

I'd be very interested to hear how you made the cutter, the photo is a bit unclear but I assume you have reground an endmill to suit?

Phil

geoff walker 116/03/2019 12:29:38
281 forum posts
120 photos

Hi All

I've Still got a few castings left if anyone is interested.

See the classifieds for details

Geoff

David George 117/03/2019 08:35:39
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753 forum posts
261 photos

Hi finished it at last.

Philip I used a 8mm slot drill ground one flute off and then ground the other flute at 15 degrees as you would a standard flute but set at an angle.

A few more pictures I oil blacked the steel parts and as I had bought a new dedicated Iscar part off blade you have to take into consideration the centre height of the finished tool.

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just tied it out before painting etc.

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you can also mount the blade on the right hand side if you are using a fixed steady for instance to part off a long bar.

David

David George 117/03/2019 09:12:03
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753 forum posts
261 photos

Video on youtube link **LINK**

David

Hopper17/03/2019 09:36:42
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3515 forum posts
68 photos

Pretty good job for an 80-year-old lathe! Well done.

What make/model is the parting blade and insert? I might have to join the modern world and get one.

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