wrote in message
...
On Thursday, November 12, 2015 at 8:17:13 AM UTC-5,
wrote:


Could you insert a close fitting drill rod into the dental pick
temporarily to prevent it from collapsing while it is being
knurled?

My gut thought is that if the rod is preventing the hollow dental
pick from collapsing, then you will not be able to get the rod out.

Dan

The knurls only press two opposite sides in, they don't shrink the
tube - they may even expand and lengthen it. Last week I pounded a
home-made swage rod into a steel tube to straighten and expand it
slightly, then pulled it out easily after hammering the OD a little.

-jsw