Workholding - 19mm Wheel Blanks

[Wongster]

Hello guys,

Have not been here for a while.  Just started getting back to my little workshop for a small job.  I ran into some problem with holding the work.  Hoping for some suggestion to try out.

This is what I'm to make.  Only 4 at this moment.




4 wheel blanks were given to me for the job:



When I was told about the job, I thought of using super glue to hold the aluminium blanks.  Now that I've the blanks on hand, I realized that I have to drop the idea.  Using heat to remove the blanks will likely melt the plastic ring.

So I came out with this:



The fixture has a protrusion of slightly less than 5mm to fit the wheel's centre hole.  It was tapped M4 and is slightly lower than the hub of the wheel.


Ready to run the gcode.
I ended up with this.  Saw the wheel turning when the spokes were being machined.



The guy who requested me to do this gave me some pix showing how someone in Thailand made his.



Anyone can help me out here?

Wong