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Postby SteveUK » Thu Nov 15, 2007 9:19 am

Thanks Ronald.

Well I did buy some proper centre drills. :P

Also discovered I already had a centre - hidden behind the drill chuck all this time, just unscrew the chuck and there it is! (glad someone told me this before I went and bought one!) 8)
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Postby Sub culture » Thu Nov 15, 2007 10:42 am

Good stuff.

Is your centre a rotating centre or a dead centre.

I never bother with a dead centre, as they require lubricating with tallow or equivalent fat, and are thus a right royal pain in the backside.

A rotating centre is well worth the investment, and the small difference in accuarcy is negligable for much of the work you or I would use the lathe for.
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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Postby SteveUK » Thu Nov 15, 2007 7:55 pm

Unfortunately it's a dead centre. I guess I'm just gonna have to lubricate the end I'm working on. But it pleases me at least I have one. ...if only I knew about it when I was running up those periscopes for my friends Seawolf! :? (they ended up with fine lines down them. But my friend is still happy to have a set of pucker periscopes for his sub instead of just a piece of brass tube. :P )
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Postby Davy » Mon Nov 19, 2007 10:51 am

Hi Steve,

And thanks Ronald for the useful links.

If you are finding your way with using a lathe (as I am) can I recommend some carbide tipped tools. These 1/4 tools from Proops were cheap at about £20 and have kept me turning brass, plastic and steel for the last couple of years. They fit the Peatol/Taig.


http://www.proopsbrothers.com/acatalog/ ... ls_60.html

The advantage is you dont need to worry about the mystery of sharpening tools, adjusting centre heights etc.
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Postby SteveUK » Mon Nov 19, 2007 1:02 pm

Hi Davy,
Funny you should mention those carbide tipped tools ..I bought one off Proops just last week at the model boat show, and I also bought a nice little adjustable parting tool too. 8)
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Postby Davy » Tue Nov 20, 2007 5:14 am

Hope you like them!

I'm using a parting off tool which I got from Chronos. It is OK but is High Speed Steel.

If you come across any carbide parting off tools let me know.

I'm learning a lot using a lathe but there are a lot of skills to pick up. I've found the Taig lathe videos quite good but I wish I had paid more attention to my Dad and his Myford!

David
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Postby SteveUK » Tue Nov 20, 2007 6:58 am

Davy wrote:If you come across any carbide parting off tools let me know.

If I do I'll let you know here. :wink:
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Postby Sub culture » Tue Nov 20, 2007 8:25 am

http://cgi.ebay.com/CUT-OFF-PARTING-TOO ... dZViewItem

I use an old hacksaw blade suitably ground and mounted in a holder for parting off light work- surprisingly effective, and cheap.

Andy
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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Postby Davy » Wed Nov 21, 2007 5:05 am

Thanks for the link, Andy,

With the hacksaw do you grind the tip to some angle or do you use the teeth?

BTW this topic seems to have drifted away from PVC!

Any chance we could put the last few posts as a new topic - Using a a lathe , say.

David
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Postby Sub culture » Fri Nov 23, 2007 12:48 pm

Don't use the teeth. Just grind in a little negative rake top and front for clearance, same as any other parting tool.

Clearly you need to go gentle, but it does result in a very small cut, and it is a very cheap tool.

Andy
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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