Gallery, Projects and General > Project Logs
Dovetail Cutter...Failed...
J. Tranter:
Wouldn't it be easier to do some thing like this? http://www.frets.com/HomeShopTech/Tooling/GiantToolHolder/giantholder.html
John
Darren:
Yes I did mention that before, it would probably be a lot more secure with less overhang from the toolpost.......but you know how we like to fiddle, practise dovetails now, make a whole lathe later..... :lol:
Darren:
To continue I reduced the shank size of the tool
Machined a slot in the holder
Drilled and tapped 5mm (the back gear is nice for tapping...)
And here we are
I added a step to lower the tool further as needed
And it's nice and snug and rather helpfully dead on square..... :ddb:, scuse the swarf, I didn't notice it when I took the picture.
websterz:
Nicely done!
Have a nice bunch o' nanas :ddb: :ddb: :ddb: :ddb: :ddb: :ddb: :ddb: :ddb: :ddb: :ddb:
Darren:
Thanks, my main aim was to keep as much rigidity as possible. Hence only removing material from one small area of the tool shank. As it still retains a full L shape it should keep most of it's strength.
The other consideration was to be able to drop in in and bed fully to all surfaces. Not only does this keep it spot on square it also locks up as one thereby not just relying on the dovetails for support/rigidity.
I can say it seems to have worked. Like Johns it cut's like butter at high speed. The tips also allow normal facing and turning as well. There are many different types of tips available for all sorts of jobs, inc threading.....I have to say this was a good investment, not that it cost much.
I'm chuffed with the outcome.... :)
While I was making it my millers power transverse packed in........ :doh: So this evening I've been stripping it down to find the cause. Turned out to be a loose grub screw in the gearbox. I had to strip the whole thing down to its component parts, of which there are a lot...!! to get at the first assembly item this grub screw....!! just the way init... :doh:
Glad to say all fixed and back together now...... :nrocks:
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