My home made C3 QCTP

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My home made C3 QCTP

This topic has 9 replies, 3 voices, and was last updated 12 October 2012 at 21:53 by Sub Mandrel.

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20 November 2010 at 18:19 #59004
Peter E
Participant
@petere
Just wanted to show the first part of a QCTP I am making right now for my SIEG C3 lathe.

The design used comes originally from Ishimura and Jim Whethren, but here adapted in size to fit the C3.

The main block is made from a lump of cast iron coming from an old iron (you know the type used to iron clothes and was heated by putting it on the stove). The material is very good and have no hard spots as far as I could find.

The tool holder locking sleeve is BMS and the center part locking the position of the whole thing is made from a bit of hard brass, all found in the scrap bin.

Made the handles in a style of my own, and intend to use the same style also for the tail stock barrel lock and the half-nut locking arm as it turned out to my liking.

I will be back when I have got hold of material for the tool holders.

BR

/Peter
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20 November 2010 at 18:19 #16590
Peter E
Participant
@petere
20 November 2010 at 18:55 #59006
Steve Garnett
Participant
@stevegarnett62550
I like the handles – very sleek!
20 November 2010 at 20:21 #59012
Sub Mandrel
Participant
@submandrel
Very nice!

I keep planning a QCTP for mine when I have a lump of scrap big enough!

I copied the standard mini-lathe handles for my tailstock and for my T&C grinder, lots easier than ball handles!

Neil
20 November 2010 at 22:11 #59019
Peter E
Participant
@petere
Thank you Steve and Stub M for your comments!I do not have a ball turning tool of any sort – yet – so I had to go for something else, and something that does not hurt when thumped wrong

@Stub M: Your handle design sounds interesting, do you by any chance have any photos?

BR

/Peter
20 December 2010 at 11:48 #60864
Peter E
Participant
@petere
Hi all,

Unfortunately it will take some time before I can continue this thread. A few days ago I slipped, fell, and broke my left wrist, but the idea is to cut a suitable no of 25×25 mm (1″x1″) holders about 50 mm (2″) in length, and from them create the different holders for turning, boring, knurling, and ball turning.

Nothing complicated, but just a lot of work.

BR

/Peter E
9 October 2012 at 18:27 #100387
Peter E
Participant
@petere
Had totally forgot about this thread but I think it is time to make an update. The wrist is now fine, even back to as good as before I fell so I have had some time to continue.

The project restarted as StubMandrel/Neil asked about drawings for this QCTP and I made a display at the end of his thread of the different types of holders I now have made. Please see **LINK**

As I stated in the other thread, the system works very good and locks the holders firmly and squarely to the post. Very recommendable.

BR

/Peter
9 October 2012 at 19:55 #100393
Sub Mandrel
Participant
@submandrel
Hi Peter,

How time flies, I lost this thread and realise you were hoping for a picture of one of my handles:

I

This one atop the very toolpost I made that is my own version of the Nakamura design.

Followinga brief interruption to my milling facilities, I now have a growing stock of toolholders, like you staring with a pile of 1"x1"x2" dovetailed blanks..

Glad to hear your wrist noqw works as well as your toolpost

Neil
10 October 2012 at 20:44 #100477
Peter E
Participant
@petere
Hi Neil,

Thanks for the picture, those handles look nice!

BR

/Peter
12 October 2012 at 21:53 #100604
Sub Mandrel
Participant
@submandrel
Thanks Peter!

I think yours look better, but mine are a good solution with minium effort.

Neil
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