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Gallery, Projects and General => How to's => Topic started by: wheeltapper on June 28, 2010, 02:46:06 PM

Title: basic dividing on a Chester Comet lathe
Post by: wheeltapper on June 28, 2010, 02:46:06 PM
Hi
I thought I'd show you how I do this.
this is my lathe, it's a Chester clone of the sieg c4.

CAUTION turn the power OFF before you start anything like this!!

(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280004.jpg)

here is the inside of the drive housing
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280005.jpg)
to start off I made this fitting, it's a flat bar with a square piece with a cross hole and a clamp screw bolted on.
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280006.jpg)
remove the two bolts shown with allen keys
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280008.jpg)

and, using longer bolts, fix the fitting

(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280009.jpg)


I then made an expanding sleeve to fit the lathe mandrel

(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280007.jpg)

fit this in the mandrel
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280010.jpg)

and then fix a change wheel to the end and insert the detent pin so it engages with the teeth
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280011.jpg)
the expanding sleeve can also be used with a handle
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280012.jpg)
a close up of the drive pin on the handle
(http://i293.photobucket.com/albums/mm72/wheeltapper_2008/P6280013.jpg)

very useful for screwcutting short threads, the lathes lowest speed is 100 rpm, a wee bit too fast for my liking.

and thats it, I hope I haven'd bored you too much :big:

cheers
the demonstrating side of Roy
Title: Re: basic dividing on a Chester Comet lathe
Post by: Stilldrillin on June 28, 2010, 04:36:51 PM
Not boring at all Roy!   :thumbup:

Superbly made, and shown....  :clap: :clap:

David D
Title: Re: basic dividing on a Chester Comet lathe
Post by: John Hill on June 28, 2010, 05:33:31 PM
Very tidy work Roy and I know it will be useful too! :clap: