[Clayart] Re; Three-pin Soldner heads
Fredrick Paget via Clayart
clayart at lists.clayartworld.com
Thu Aug 7 13:25:40 EDT 2014
I specifically recommended WD40 because it is not a very good
lubricant. It is mostly Stoddard solvent with a little very light oil
and proprietary rust preventer. If you try axle grease I fear the
Morse taper will not lock as it depends on the friction force in the
joint being greater than the torque force . If you try it and it
slips, no harm will be done, as you can take it off and clean it and
go to WD40 or nothing.
On my Jepson wheel I began to get slippage after a couple of years
and had to put a pin through the base of the taper. The pin engages a
groove knotch I filed at the bottom of the wheel head center collar.
That operation is easy on the Jepson because the splash pan is very
deep and removable . There is about 6 inches of free space you can
operate a drill in. Probably not the case on the Soldner so it would
be a job for a machinist to take it all apart. The pin to use is
called a Rollpin . It stays put as there is a spring action as the
roll is driven into the recommended hole size and the pin stays tight
in the hole.
> WD40 is not really a good oil for this purpose and will not work
>over the long haul. Best bet would be a grease such as axle grease
>which will not evaporate over time.
>For removal of the head would recommend gradual tapping on the wheel
>head bottom as close to the shaft as possible. I use a piece of
>hardwood about one inch by two inch an about a foot long to transfer
>the force from the hammer to the wheel head. If this doesn't work
>you can try heating the wheel head and then tapping.
>On Aug 6, 2014, at 7:34 PM, Fredrick Paget via Clayart
><clayart at lists.clayartworld.com> wrote:
>> I have a Jepson wheel with the Morse tapered shaft on the head
>>shaft. A Morse taper locks due to the low angle and need a a good
>>tap in the upward direction to spring it free.
>> I have an old skin diving weight that weighs about 4 pounds and is
>>flat enough that I can put it on the flat of my hand and get under
>>the head with some free play. I give it a good tap in the upward
>>direction and it springs free. Keep the taper oiled with WD40 to
>> If you want more info see Wikipedia:
>> Fred Paget
>> Twin Dragon Studio
> > Mill Valley, CA, USA
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