Grinder

that looks a lot like a piston grinder

"A batch is cut and ready to be hardened."

You harden those shaft ends with the armatures wound?

OldForge said:

"A batch is cut and ready to be hardened."

You harden those shaft ends with the armatures wound?

Click to expand...

Funny, I was also thinking that- you might just get away with it with induction hardening ;

http://www.bing.com/images/search?q=ind ... ORM=HDRSC2

needing said:

Norton Commando?

Click to expand...

Well, maybe not a Commando, but at least it's a Norton...

TTFN

OldForge said:

"A batch is cut and ready to be hardened."

You harden those shaft ends with the armatures wound?

Click to expand...

Yes, not a problem. jim

Bernhard said:

OldForge said:

"A batch is cut and ready to be hardened."

You harden those shaft ends with the armatures wound?

Click to expand...

Funny, I was also thinking that- you might just get away with it with induction hardening ;

http://www.bing.com/images/search?q=ind ... ORM=HDRSC2

Click to expand...

I would like to have an induction heater that was large enough to do the trick. Maybe someday.
I tried a 1.5 KW unit one time but it was too slow to heat the gear without transferring too much heat to the windings.

Here is my high tech setup.



It's a piece of firebrick that has a steel cup inside of it. The armature is inserted though the hole and rotated with the drill for a specific amount of time in front of the rosebud and then oil quenched. Then it is re-inserted and blue tempered with a propane torch. They come out around 58 RC and have proven to last very well.

Hi all,

Well, this would just not be the same without a shameless sales pitch showing the end result of what Jim is working on

http://coloradonortonworks.com/part-cat ... /#post-215

Am am also adding a new finish to the Chromed version. Wrinkle Black for those that prefer the dark look



Matt / Colorado Norton Works

http://www.coloradonortonworks.com

cNw said:

Hi all,

Well, this would just not be the same without a shameless sales pitch showing the end result of what Jim is working on

http://coloradonortonworks.com/part-cat ... /#post-215

Am am also adding a new finish to the Chromed version. Wrinkle Black for those that prefer the dark look



Matt / Colorado Norton Works

http://www.coloradonortonworks.com

Click to expand...

Cool, You fixed the only part I didn't like.