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Impressive!

Hi Ken,
If you have found a way to mount the BGM horizontally to provide grinding (cleavers) into the wheel, please share with us. I find grinding into the wheel gives more control.
Thanks,
FL

Nice! Looks good for cleavers.

Thanks for sharing       

This is amazing 

http://sploid.gizmodo.com/making-a-super-sharp-knife-from-an-old-wrench-1718315315

Off topic,
Steve, I find your suppliers consolidation page very useful.
Thanks.
FL

  If money is not a object get the knifes sharpende some where else and just pay the man.

But then, you might miss out the fun, the challenge and sometimes the frustration 

I was looking for strong large neodymium magnets but could not find them.
Happened to come across HDD use such magnets.
So if you have some old HDD lying around, you might want to salvage the magnets for your Tormek or some other projects.

Thank you Stig for your report!

I have used the time when the original Tylers machine was tested in Sweden, to understand why an idle running motor may be warmer then a motor under full load. I hope to understand it now, and I will try to explain here why is it so.

Single-phase AC induction motors are known by the names of the starting method used. In my opinion our motors are Permanent-Split Capacitor motors (PSC). These motors have run-type capacitor, which is permanently in series with the auxiliary winding. In the figure bellow there is a winding scheme for a PSC motor.


It is common misconception that a PSC motor running below its full load will run cooler and more efficiently. On the contrary, single-phase motors may become very warm at small loads or when run idle.

Why is it so? The efficiency of an idle running PSC motor drops to zero, and hence all the consumed electric power is converted to heat power. Whereas, near full load rating, the motor efficiency is greatest. The consumed power is partitioned into shaft power and the heat power. It may happen that an idle running motor generates more heat than the same motor running at full load.

In the figure bellow there is power triangle relating apparent power to real (consumed) power for a small PSC motor.



The figure shows, that the heat power (upper red bar) produced by an idle running motor is larger than the heat power (lower red bar) produced by a full loaded motor.

During our grinding and honing the motor load is only some 5% of full load.
Jan

Thanks for sharing Jan.
I remember reading in the manual that no load generates more heat or something to that effect.
Good post anyway.
fl

Fineline, have you checked the voltage at the outlet where you plug in your Tormek? See what the voltage is, especially under load. It could be that there is an issue with the wiring in your house, or with the voltage being supplied to your house. I would check simple things first like the outlet itself and the circuit breaker itself. Many times these parts wear out under heavy use and are just fine until you use them for heavy duty service. They are easy and inexpensive to replace.

Hi Herman,
I don't have a overheating problem with my machine. OP is Tyler.
fl

Hi,
We got the machine about 2 weeks ago and tested the machine for several hours with 122 Volt, a higher current, to see how warm we could get it and if it stopped.
The result was about 57 degree celsius/ 135 degree Fahrenheit witch is within tolerance and we got a lower temp when we measured on the motor housing. It worked all the time.

We can´t find anything wrong with it but it could be the switch since a click was noticed. The motor itself can´t give a click sound but the switch can.
The test did not show why it stopped. Even the switch works as it should.

We can't do much more than to test it and the customer have a new machine that works fine.

Stig

Stig,
What a coincidence. The unit I have also has this 'click' when I press to turn on the machine. I'm wondering if it might be some form of arcing or voltage spike. Anyway, if you have further findings on the switch, please share with us.
Thanks,
fl

Hi Stig,
Is it ok to share what happened?
Just curious.
FL

Hi Ken,
What did you use to slice up the jig. The cut is really nice and clean.
FL

60 degrees. Not all kickback. That's what puzzles me. I'll make notes next time.

Thanks Herman and Grepper,
It's not the noise that it's making, it's actually bouncing the scissors off the wheel;
something like driving along a road full of bumps or pot holes. That's what makes
me true the wheel just to be sure. As soon as the scissors contacts the wheel, it gets
'kicked' off even though I let the scissors very gently touch the wheel. I've also lowered the
jig to be just clear of the wheel.
No one encounters any 'kick backs' before?