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My CBN Wheel arrived.....

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My CBN Wheel arrived.....

#1

My CBN Wheel arrived.....

Barry Irby

And I installed it on my ancient Rockwell 6" grinder. Not without some difficulty. I had a 3/4" wheel on it. The new wheel is 1" and the old washers were too thick and there was a roll pin in the shaft. Could not get the pin out so I drilled it away to nothing and used conventional washers for padding. Took some fiddling and searching, but it got done.

I moved the old white wheel to the other end of the machine. I also dressed it.

There were a set of planer knives that needed sharpening because they discovered a nail. The grinder has a jig meant for plane blades and chisels, but it has been adapted for planer knives. I sharpened them in a matter of minutes. Then stroked them on a 600 grit diamond plate and then stropped them on a 1 X 30 sander with a leather belt impregnated with diamond.

I won't say they were sharp, but I looked and had blood all over them. Cut myself and didn't even know it.

Two things surprised me. One, the wheel is steel and heavier than I imagined. The first time I turned on and off, the grinder ran for so long I thought the switch had failed in the ON position. Took it 4 1/2 minutes to stop. I guess those old bearings are still fine.

Two, the wheel is 180 grit and it produced more heat than I expected. This was the first time for the blades on the wheel and were probably getting a little more shaping than next time.

So far, pretty happy.

Re: My CBN Wheel arrived.....

#2

Re: My CBN Wheel arrived.....

Derek Cohen (in Perth, Australia)

Barry, a couple of points:

1. Yes, the wheels run and run when the motor is switched off. Mine run for 8 minutes (2 wheels, so more weight and momentum). Just shows how well balanced the CBN wheels are.

2. You can generate heat ... with a heavy hand. Lighten your touch. The wheels are a large heat sink, so they will run much, much cooler for the same touch on a white wheel. Don't assume that CBN is a free lunch when it comes to heat.

3. The wheels need a little time to run in. Then they are smoother, but still as quick as ever.

Regards from Perth

Derek

Re: My CBN Wheel arrived.....

#3

Re: My CBN Wheel arrived.....

John Jardin

Derek,

You show a flat attatchment table on the "Tormek" fixture where you can grind the concave bevel on thick scrapers. Is this "table" something that you made or is it a Tormek accessory?

Re: My CBN Wheel arrived.....

#4

Re: My CBN Wheel arrived.....

Barry Irby

I bet yours are 8" wheels....? With too of those it would run a long time.

Mine is 6". I was surprised at the weight. Somehow I thought it was going to be aluminum.

Thanks for the reminder it is going to run in, that will be better. It produce a wire edge that was more ragged than I expected, but I bet it will get better.

Now on to the unicorn edge.

Re: My CBN Wheel arrived.....

#5

Re: My CBN Wheel arrived.....

John Jardin

Scratch that!

I found the Tool Rest SVD-110 in the Tormek manual.

Reminds me of the saying "seek and thou shalt find"

Re: My CBN Wheel arrived.....

#6

Re: My CBN Wheel arrived.....

John Jardin

Barry,

Who did you buy the CBN wheel from?

Re: My CBN Wheel arrived.....

#7

Re: My CBN Wheel arrived.....

Barry Irby

Lee Valley....They have 6" by 1" wheels in several Grits for $99 with free shipping. They did add VA sales tax to mine, driving the price to about $105.

Very nice setup for a 1/2" shaft. Runs very true.



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