Ceilidh ... Re^9: Now, about those polyurethane guide rings...?

Hydraulic Die Forming Discussion Group

Re^9: Now, about those polyurethane guide rings...?

On Wed Nov 13, Cynthia Eid wrote
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>Great! what happened to all the oil at the end? was it a mess, or did you figure out a way to control it?

It just ozed out of the top of the tube as it was drawn Imost of it just ended up on the die rings.

>What was the nature of the damage to the o-rings that you "lost along the way"? and why did that not damage the silver?

they were pinched by the very last bit of the tube where it is uneven and the distortion that caused was limited to the ragged edge/ end of the tube.

>How thin a wire did you insert? I don't quite follow that part......

I knew I should save that drawing file :-) well here it is again with modifications. I used a .030 stainless wire but it could be any metal

>It'll be interesting to see if the oil is needed with the tefon/viton rings. I'll let you know.

I look forward to hearing your experiences

>How carefully did you control your first draw with the MDS? did you use the torque wrench, or just hand tight? Just the 3" disc, or did you put "spacers" between the bolts?

No spacers and 25 inch lbs torque

Thu Nov 14