ER32 Collet Chuck for Proxxon PD 400

[Wongster]

I kind of started work this morning. I said kind of as I didn't make the centering tool shown and advised by the good folks here - lazy me... May end up paying for the laziness.

Anyway, the pics show what I did so far:

Using the centre square, the rough centre was marked out. The square is a little too small for the job.



This is the biggest part ever clamped on the Sherline's table. The table became harder to turn with it on.



The spot drill I bought after reading a thread on Madmodder. Should have used the centre drill for this... I learnt.



Spot drill in use.



Opening up the jaws to just slightly past the OD of the chuck. I really dislike this Proxxon 4 jaw independent chuck. Only the adjustment screw for jaw 3 can be turned smoothly. The rest are very stiff.



Using the live centre to hold the stock against the chuck. The jaws of the chuck were then carefully tightened.



Check out the amount of wobble:





Facing.



The spindle was set to turn at 330 rpm. The depth of cut was conservative but I slowly increased it to 0.2mm when I'm almost certain that the steel piece was not going to fly at me.