Shars U2 Universal Tool and Cutter Grinder-Adapter removal?

[NC Rick]

My “theory” on the tool design was to reach the bottom of the threaded hole in the spindle nose with my pin to preclude any opportunities I may have for damaging the spindle nose.

 

[Janderso]

My “theory” on the tool design was to reach the bottom of the threaded hole in the spindle nose with my pin to preclude any opportunities I may have for damaging the spindle nose.

I agree 100%

 

[Buffalo21]

Jeff,

I‘m unfamiliar with your U2 cutter grinder, is it just for drill bits or is it for other grinding purposes also?? The drill sharpeners I just bought, are really simple to use, but according to the manual, it’s just for drill bits. Does this use individual collets or a all in one like a drill doctor?? I looked at an dedicated end mill sharpener, made by the same manufacturer as the drill bit sharpener, but they started in the $1200-$1300 range, a little too expensive at this current time, for me.

 

[Janderso]

This kit is called the universal. It comes with the drill bit attachment that looks a lot like the Lyle unit IMHO.
It also has an end mill attachment and a lathe tool holding device.
One could get as complicated or as simple as the users imagine desires.
The heads that holds the drill bit attachment has a 5C collet chuck. You know what that implies.
Since I have a basic 5C collet set I have a good start on holding end mills.

 

[pontiac428]

The Shars version ("Sheckel") of the Chinese U2 or the German Deckel all refer to D-bit sharpeners. They work like a T&C grinder, but they are limited because you can't work through a 180 degree arc. The working range is more like 120 degrees. When used as presented, they can do wonderful things on D-bits, but when outfitted with additonal fixtures, they can do end mill faces, flutes, drill bits, countersinks, dovetail cutters, and more. And more requires thinking outside of the box. That is a very individual thing, not everyone can look at a Deckel and see hidden ways to make and sharpen tools. They represent a great value, because a truly universal T&C grinder would cost at best 3-5x as much up front.

 

[Janderso]

I was watching Stephan's video on this U2 grinder. He chose to just use the 8mm 1.25 thread to push the adapter off the taper.
I must admit, I have done this 2-3 times now with no marks at all on the spindle.
I think I will go ahead and make one but I thought it was interesting as he is a very anal machinist.