Started to cut metal tonight whilst the boss was busey making chocloate refrigerator cake for her class.
When I start to turn the mandrell proper I want to leave it set up until its finished so I spent some time preping other bits.
First part was the clamp washer this was made from some 3mm plate rough cut then friction turned to size.
First time I'd tried this it worked a treat
Put a 60 deg countersink in the midle.
Next job counter bore the adaptor plate to take the washer, job set up true in big four jaw.
Next bit seting the M2 morse taper in my M3 head stock morse taper, this was done with a M3 to M2 adaptor sleeve with the back cut off so that a draw bar can screw into the M2 morse taper. the one I used was made by John he simply cut the back end off an ordianary sleeve but you can buy them from Arc Ero.
This is how the bits go
As the plate has to stand away from the table so that I can get my fingers in to screw the bolts in, I had a check with a vice to see how much finger room I needed.
About one inch should do it.
Marked the one inch finger room from base of RT on the M2 mandrel
Then rough turned the register on the mandrel 1/2 mm big, then drill and tapped the end M6
Then finshed turn it for a nice push fit on the adaptor plate.
With high strength loctite assembled the plate to the mandrell, pushed it on with the tail stop.
Just out of interst checked the run out on the OD of the plate 0.02mm thats good
That all for know let the old loctite do its curring thing overnight.
Have fun
Stew
