Thread: CBN wheel - first impressions

Agree with Jeff and Neil.

Small bowl (which the Gidgee prob was given the species) you can with care get away with a SPG on the outside but that use is in general 'bowel' gouge territory ;-}

Originally Posted by issatree

....normally one would use a Green Wheel, to sharpen TCT.

Originally Posted by rsser

A green wheel will cut TCT but not exactly put a fine edge on it. That's a different ballgame.

CBN is said to be optimal for high alloy steels.

TC isn't a steel.

Diamond is said to be best for TCT.

CBN is said to be best for steels.

CBN wheels will cut carbide and diamond wheels will cut steel, they just don't do it as well.

If your main use for the wheel is grinding HSS, get a CBN wheel. Occasional use for TCT is OK.

If your main use of the wheel is for grinding TCT, get a diamond wheel.

Originally Posted by jefferson

.... one of the first lessons I had included the edict that a spindle roughing gouge was not to be used on bowl work.

And rightly so, Jeff. Any responsible teacher should warn the novice of the almost inevitable consequences of doing so. But, Bruce is no longer a novice. He just (temporarily) forgot that there are others on the forum who will be...

Hang on guys!
I think you are assuming I have a lovely 200mm round Gidgee blank, perfect and concentric , ready to go - NAH!!
I had an ugly size lump of Gidgee( 300mm) that I trimmed on the Bastardo 4 with a 20mm/ 1.2 tpi bi-metal blade - at best it was an octagon - at best!!
The P&N 20mm roughing gouge (love the thing) worked its wonder and turned it into round. From there the "normal "bowl gouges were used to hollow and form . When I was happy with the final outside shape I used the D-way 20mm spindle gouge to perfect the last cut before sanding.
Call me obtuse .....but is there anything wrong with the above? Am I missing something?

Bruce
P.S. this is about a new grinding wheel purchase........maybe you need to look at an new OH&S thread for newbs to address the concerns you raise.

Neil,
Thanks for the pencil idea - tried it today and the thing is perfectly true - maybe the resonance is set up in the tool and not the wheel? On a scale of 1 - 10, the vibration is a 1 - to date , very happy with the wheel. Can't wait to sharpen my "SRG" again,
Bruce.

I got some matrix style CBN wheels maybe 6 years ago at a cost of about $300 each. They are similar to the diamond wheels that Woodcraft sells, 1 inch aluminum hub/wheel with 3/16 inch of grinding matrix bonded to the wheel. They are about half way worn out. I now have the D Way wheels as well. I prefer the D Way wheels. The matrix style will develope some run out after heavy use, like any wheel will where the matrix wears away, a thousandth or two run out in the shaft, the bushing, the hub, the wheel, added to millions of revolutions will cause the wheel to get some run out. This is not some thing that can be fixed at home, and they will eat a diamond dresser. You have to get them back to the manufacturer.

My D Way tools wheels have broken in a little. They do remove a lot of steel very quickly. I would say that the 80 grit cuts faster then the 30 grit wheels that came on my Baldor Grinder (heavy duty, top of the line machine made in the US, that I can abuse to the maximum and it doesn't slow down a bit). The 180 grit wheel is comparable to about 120 grit. The finish was a bit coarser when I first got them, than they are now. The bevel edge looks more polished. I consider them to be what every turner will want to have. You never need to balance them. You never need to true them up. You never need to clean them. There is no risk that they will ever blow up. They will last a life time for most turners. You can remove the wheel covers, at least on the outside, with no worries. The ringing that you get is natural harmonics, kind of like the noise differences between a cast iron lathe, and a steel tube lathe. I have gotten used to it.

No affiliation with D Way tools other than a very happy customer.

robo hippy

Bellyup
How much did the freight work out on this wheel ? I thought about buying one of these a while ago but I thought the weight of it would make the freight too expensive .
Ted

Mine just arrived.

Cost of wheel $204.77

Freight $47.25.

Ordered on 1/10.

Yep, As says - (mind you - you'd pay $20 p&h in Aust.) but for the postage cost you can also include some of his very nice chisels, the 1/2" spindle gouge is a new fav.
I think the CBN is fantastic (compared to where I was)
, your thoughts on the wheel?
Bruce.

Thanks Bellyup and . I bought some of his beading tools back when the $A was $US 1.05 . From memory the freight then was about $25 and the weight was only about 500gm . I'll see how high the Ausie dollar goes this time .
Ted

Originally Posted by bellyup

, your thoughts on the wheel?
Bruce.

I have been using it all day and very impressed.

Better than my alox wheels. Doesn't need dressing every 2 hours.

Leaves a bloody good edge.

What more could a turner want? mmmmm

Originally Posted by

What more could a turner want? mmmmm

2 off them

Originally Posted by Jim Carroll

2 off them

Ordered another one.

I've promised myself a second one when/if the Oz$ gets to US$1.20.....