[modeleng] Re: How do these work please?

They're very simple. Just a cylinder of steel (?) that has six slits along
the axis to make fingers. A central hole is drilled and tapped. Inserting a
flat-head screw expands the fingers. It is easier to see the design if you
click on "View larger picture" on the eBay listing that you referenced. 

> -----Original Message-----
> From: modeleng-bounce@xxxxxxxxxxxxx [mailto:modeleng-bounce@xxxxxxxxxxxxx]
> On Behalf Of Tony Wells
> Sent: Sunday, April 22, 2007 9:39 AM
> To: modeleng@xxxxxxxxxxxxx
> Subject: [modeleng] How do these work please?
> 
> Hello chaps,
> While looking on Ebay for some small expanding collet chucks for my
> woodturning, I found these on the US Ebay. As I cannot fathom out how on
> earth they are supposed to work, cananyone here enlighten me please?
> 
> http://cgi.ebay.com/1-4-1-1-4-HAND-8-EXPANDING-ARBOR-SET-LATHE-MILLING-
> NEW_W0QQitemZ330095907283QQihZ014QQcategoryZ58250QQrdZ1QQssPageNameZWD1VQQ
> cmdZViewItem
> 
> Item number 330095907283
> 
> Thanks,
> 
> Tony Wells.
> 
> PS, am I the only Tony here these days, to save me writing my full name?
> 
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