Idea for holding coin on mini lathe

E

eltonc

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Hi everyone ,

Is there are better method to hold a coin without using collet? Since my sieg c0 lathe cant not use it.

I have tried to hold by chuck but cutting tool will crash to it.

Thank.

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Many variables, depending on what cuts you need to make, but some people use epoxy or superglue, and even 2 sided tape to temporarily adhere a coin to a flat face, either a faceplate, or simply a piece of stock faced flat. A little heat, or solvent and it will come right off.
 
Hot glue works as well.

Get or make a set of soft jaws and make a shallow recess that will hold the coin. You can work the face but not the edges this way.
Pierre
 
hi eltonc,

it looks like you can get collets for the sieg c0 lathe, i found these ones:
http://www.arceurotrade.co.uk/Catal...aby-Lathe/C0-Baby-Lathe-Headstock-Accessories

they appear to have er16 and er25 collets, are those big enough diameter for what you need to hold?
it has a M14 x 1.0mm spindle thread right?

another option is using a device called a "spider", it is basically a spacer between the chuck face and jaw tips. it keeps your work from being pushed into the jaws.

here's one design:
http://www.homemodelenginemachinist.com/f13/easy-build-spider-small-lathe-5849/

good luck
 
Tony Wells said:
Many variables, depending on what cuts you need to make, but some people use epoxy or superglue, and even 2 sided tape to temporarily adhere a coin to a flat face, either a faceplate, or simply a piece of stock faced flat. A little heat, or solvent and it will come right off.
Click to expand...

That would be the best method and he doesn't have to buy anything special.
If he can machine a shallow pocket with an ID close to the OD of the coin at the end of the faced stock it would hold and auto-center the coin after gluing.
 
could you drill a hole in steel the size of the coin and then heat the steel and press the coin into the hole. When it cools, it would firmly hold it. To release coin, just heat up the steel form again.
 
brino said:
hi eltonc,

it looks like you can get collets for the sieg c0 lathe, i found these ones:
http://www.arceurotrade.co.uk/Catal...aby-Lathe/C0-Baby-Lathe-Headstock-Accessories

they appear to have er16 and er25 collets, are those big enough diameter for what you need to hold?
it has a M14 x 1.0mm spindle thread right?

another option is using a device called a "spider", it is basically a spacer between the chuck face and jaw tips. it keeps your work from being pushed into the jaws.

here's one design:
http://www.homemodelenginemachinist.com/f13/easy-build-spider-small-lathe-5849/

good luck
Click to expand...

Wow.. you are my saver, thanks !
 
Q about the spider. I went thru the very interesting spider URL provided and downloaded the how-to photos:

If you lack collets like I do on my 9A South Bend, then making a set of spiders would be the next best option?
 
also, wouldn't you need a spider sometimes for a 4-jaw chuck too?
 
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