thepest
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| posted on 28/11/09 at 11:09 AM |
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sharpening Lathe cutting tools
Anyone got some good reference for this? I never seem to be able to get the bits as good & sharp as new. Anyone got advice or help?
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mangogrooveworkshop
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| posted on 28/11/09 at 11:59 AM |
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You have to have a jig on your stone that has the two angles preset to get a good result.
We used to do this but we all have moved over to replaceble inserts on tool holders for myfords
On the web there is a page with these critical angles but the bookmark is expired. One mr jenkins can maybe shed light on this page.
[Edited on 28-11-09 by mangogrooveworkshop]
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trextr7monkey
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| posted on 28/11/09 at 12:12 PM |
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Clueless on this now myself as we are moving over to replaceable tips but one of the technicians - 60 odd years old trained as a turner with Royal
Ordnance making 50' gun barrells etc  so he makes his own tools from first principles, very skillful.Mike
http://www.flickr.com/photos/14016102@N00/ (cut and paste this dodgey link)
Our most recent pics are here:
http://s129.photobucket.com/albums/p211/trextr7monkey/
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robocog
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| posted on 28/11/09 at 12:30 PM |
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Ian Bradley talks LatheTools should help...as well as a host of other invaluable stuff
File is zipped and is 30 megs of goodness
Clicky here
Enjoy :-)
Regards
Rob
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Mal
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| posted on 28/11/09 at 01:01 PM |
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If you want to see replaceable tip tooling suitable for most home use size lathes take a look atthis website
chronos.ltd.uk
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clanger
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| posted on 28/11/09 at 02:10 PM |
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A good tip for you. When you've got the angles set right (try adjusting the grinder tool rest if your struggling) look for the tell tale signs
of the grinding sparks bouncing off the top of the leading tool edge. This will give you a good idea as to when the tool is nearing its keenest
edge.
Thry to keep the angle of attck consistent, it comes with practice, and don't overheat the tool.
Also when you've sharpened it, just knock off the pointy bit with a light going over on the fine wheel or use a sharpening stone. It should
improve the finish. Best of luck !
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David Jenkins
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| posted on 28/11/09 at 03:41 PM |
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quote:
Originally posted by mangogrooveworkshop
One mr jenkins can maybe shed light on this page.
Your wish is my command...
LINKY
Look down the contents page for the bit about lathe tools and sharpening.
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mangogrooveworkshop
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| posted on 28/11/09 at 05:53 PM |
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quote:
Originally posted by David Jenkins
quote:
Originally posted by mangogrooveworkshop
One mr jenkins can maybe shed light on this page.
Your wish is my command...
LINKY
Look down the contents page for the bit about lathe tools and sharpening.
Never let me down thanks
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fazerruss
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| posted on 28/11/09 at 08:29 PM |
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You can sharpen without specialist tooling but if you are using tungsten carbide tips you will need a green grit wheel on your grinder. Ordinary stone
wheels are no good
"if assholes could fly this place would be an airport"
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thepest
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| posted on 30/11/09 at 07:56 AM |
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thanks guys all very helpful
Cheers
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