On Fri, 3 May 2019 13:54:41 -0500, dpb wrote:

The old pot metal split ends for push-on style knob for the oven
timer/clock finally broke leaving the end of the 1/8" OD shaft.

As it is obsolete and no longer available and the oven/ragne itself is
also of a style no longer produced that do not want to give up, the need
is to be able to repair...

It's long enough stub that if could find a crimp-style butt connector,
think could manufacture a replacement split shaft or cut the end off a
sacrificial product and attach for the knob to push on to...

I'm not thinking of right search terms to be finding anything that meets
my idea...have some old telephone wire nicopress that are just a little
too small...

Or, other ideas also welcomed...

If you are not in love with that particular knob you could get a
1/8x1/4" bushing, epoxy it on the shaft and use a set screw type 1/4"
knob. There are plenty of styles in that category