New CBN wheels + Tormek drill sharpener

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New CBN wheels + Tormek drill sharpener

This topic has 11 replies, 7 voices, and was last updated 8 March 2017 at 10:28 by norm norton.

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5 March 2017 at 22:31 #287322
Dave Cee
Participant
@davecee80929
Fitted CBN wheels to my grinder. They are fantastic!

Vid link. https://http://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.

Edited By Dave Cee on 05/03/2017 22:32:57
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5 March 2017 at 22:31 #12914
Dave Cee
Participant
@davecee80929
6 March 2017 at 05:26 #287346
Thor 🇳🇴
Participant
@thor
That sharpened drill looks very good Dave, how does it cut when drilling a hole?

Thor
6 March 2017 at 10:44 #287394
Dave Cee
Participant
@davecee80929
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.
6 March 2017 at 10:55 #287397
ega
Participant
@ega
Dave Cee:

May we know where the CBN wheels came from and if you had good service from the supplier?
6 March 2017 at 11:04 #287400
Harry Wilkes
Participant
@harrywilkes58467
Drill sharpening an art which as always alluded me ! Yours look good.

H
6 March 2017 at 11:51 #287420
Mike Poole
Participant
@mikepoole82104
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
6 March 2017 at 12:25 #287432
ega
Participant
@ega
Mike Poole:

Thank you for this point which I should have spotted.
6 March 2017 at 12:48 #287435
Phil Stevenson
Participant
@philstevenson54758
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.
6 March 2017 at 13:02 #287437
Dave Cee
Participant
@davecee80929
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
7 March 2017 at 20:52 #287634
Dave Cee
Participant
@davecee80929
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.
8 March 2017 at 10:28 #287709
norm norton
Participant
@normnorton75434
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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