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New CBN wheels + Tormek drill sharpener

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Dave Cee05/03/2017 22:31:52
37 forum posts
20 photos

Fitted CBN wheels to my grinder. They are fantastic!

Vid link. https://www.youtube.com/watch?v=E52tFkpVt5k

Also bought a Tormek drill sharpener.. another great bit of kit too.

My first attempt at a 4 facet cut on a 10mm bit.

Dave.

drill grinder.jpggetfileattachment.jpg

Edited By Dave Cee on 05/03/2017 22:32:57

Thor06/03/2017 05:26:10
1276 forum posts
39 photos

That sharpened drill looks very good Dave, how does it cut when drilling a hole?

Thor

Dave Cee06/03/2017 10:44:58
37 forum posts
20 photos

Haven't used that one yet but I did an 8 mm one and that cut perfect.

Lots of equal cone swarf either side etc. It is very easy to use.

Dave.

ega06/03/2017 10:55:47
1812 forum posts
153 photos

Dave Cee:

May we know where the CBN wheels came from and if you had good service from the supplier?

Harry Wilkes06/03/2017 11:04:03
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981 forum posts
63 photos

Drill sharpening an art which as always alluded me ! Yours look good.

H

Mike Poole06/03/2017 11:51:12
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Moderator
2745 forum posts
64 photos
Posted by ega on 06/03/2017 10:55:47:

Dave Cee:

May we know where the CBN wheels came from and if you had good service from the supplier?

The YouTube video has a link to The Toolpost in Didcot as the supplier of the CBN wheels.

Mike

ega06/03/2017 12:25:43
1812 forum posts
153 photos

Mike Poole:

Thank you for this point which I should have spotted.

Phil Stevenson06/03/2017 12:48:33
77 forum posts
13 photos

Axminster also sell CBN wheels, the ones from Woodcut. I've had one for a year; absolutely brilliant. I use it predominantly for wood turning tools and it's unbeatable. They are very popular with woodturners and I've never heard anything but high praise for them. They've got to be ideal for any HSS tools and I've also touched up carbide tips on mine. Something to consider is whether you might want to sharpen on the side of the wheel as well as the circumference. I might be wrong but I believe the one form Toolpost allows this, the Woodcut one doesn't but it's cheaper (or was when I bought mine). I've heard prices have come down recently.

Dave Cee06/03/2017 13:02:51
37 forum posts
20 photos

According to Peter the wheels are now made in Europe by a company that make only CBN wheels.

I know CBN are a bit dear but trust me they are worth it.

Dave

Dave Cee07/03/2017 20:52:48
37 forum posts
20 photos

Don't know what happened to my drill pic so here it is again.

Also..

Ground a 9.5 mm cobalt drill to 135 deg + 7 deg primary and 20 deg secondary.

Went through 6mm alloy angle like it was plastic. No pilot hole just a centre punch and some cutting oil.

getfileattachment.jpgswarf.jpg

norm norton08/03/2017 10:28:45
134 forum posts
7 photos

I have a home-made tool grinding platform, with multiple angles, etc. that I use for lathe and other tooling. I am also nearly there with a milling tool holder to do the tips.

But I have never sorted out a jig for drill grinding and I tend to just buy in more Dormer A002 four facet drills, which are the best for all sorts of work. So this Tormek DBS-22 interests me as it produces the four facet finish. It costs £184 from Tyzak. Hmm, that is about 30-40 new drills of typical sizes. At my current wear-out/damage rate that is perhaps ten year's worth.

I was never keen to follow up on the many improvements on the 'sweep tool' for a conical grind that have been in many editions of ME/MEW. However, I cannot recall any magazine article describing the construction of an attachment to do exactly what the Tormek DBS-22 does. I seems straight forward to make and just needs the angles described for the facets. Did Harold Hall describe something? or has anyone seen it elsewhere?

I do agree about the CBN wheels though.

Norm

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