On Sat, 4 May 2019 09:37:24 -0500, dpb wrote:

On 5/3/2019 6:17 PM, trader_4 wrote:
On Friday, May 3, 2019 at 6:30:54 PM UTC-4, dpb wrote:
...

The metal post broke ? I've seen the old plastic knobs crack at
the insertion point .. from heat & age & cheapness. John T.


Yes...it's the style with a kerf down the middle of end of shaft leaving
the two semi-circular halves...one half had been broken off for quite
some time, finally the other gave way, too...

Of course, it's really cheap/weak metal shaft so it's not like it's all
that much torque to twist as there's very little cross-sectional area left.

The knob itself is just fine...

How about a piece of copper tubing or similar that will slip over it?
...

Well, that was my idea...excepting I'm finding nothing of suitable ID/OD
for the sleeve which is the Q? ...
solid brass - drill to fit - or solid aluminum drill to fit, or tube
of either with too small ID and drill to fit.