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[4]

How To Hold Small Parts?

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kyler

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#1
I'm making handlebar risers. They are 25mm long and 25mm OD with a 10.5mm hole. I made a mistake and didn't turn them to the final size before parting.

How do I mount these so I can turn them down to 25MM? Is there some sort of expanding bolt?
 

DaveInMi

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#2
There are different designs of arbors you can make. One uses a pipe plug (tapered threads) and split the shaft with a hacksaw or whatever.
 

Wreck™Wreck

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#3
Inside or outside turning?

If outside make an arbor and bolt them to it then turn away.

If inside hold them in a chuck and bore to your hearts content.
 

kd4gij

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#5
Just grab a piece 3/4 of round stock or what ever you have chuck in lathe turn it down to a interference fit for the 10.5 id a little less than the 25mm length
drill and tap to m6 and tap your part on and tighten with a washer. leave the arbor in the chuck till you get both parts turned down.
 

kyler

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#6
Just grab a piece 3/4 of round stock or what ever you have chuck in lathe turn it down to a interference fit for the 10.5 id a little less than the 25mm length
drill and tap to m6 and tap your part on and tighten with a washer. leave the arbor in the chuck till you get both parts turned down.
perfect - thanks!
 
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