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Messages - John Hancock Sr

Quote from: cbwx34 on Yesterday at 04:24:07 AMThe motor's shaft may be slipping on the rubber drive wheel

You can also use never slip, which is available from automotive suppliers. Generally used on Vee belts but ideal for your Tormek drive wheel.
Knife Sharpening / Re: New angle jig KS-123
Yesterday at 12:17:24 AM
Yes, I recall all of the discussion and Indeed I read the review from Dutchman. Just looking at the short was enough to convince me. Checking Australian suppliers does not show it yet.
Knife Sharpening / New angle jig KS-123
May 20, 2024, 09:39:42 AM
Just saw this on the Tormek Innovation YouTube channel.

Should make setting the angle so much w.
To sharpen you need to use a harder material than that which is being sharpened. The SG wheel is aluminium oxide which is perfect for carbon steels but is not so good on harder tool steels since they are harder that aluminium oxide. The SB is silicon carbide which was the wheel of choice for high speed steels back in the day but this has been supplanted by diamond, and latterly CBN, cubic boron nitride, which is not quite as hard as diamond and better when high speed grinding.

Your issue with the SG is common and is due to glazing of the stone surface due to the hardness of what you are sharpening.

I went out and bought the DC, DF and DE wheels since I sharpen a lot of harder steels. The SB is perfectly fine and cheaper than buying the three diamond wheels but I prefer the diamond wheels since they are consistent grit and do not change size.
General Tormek Questions / Re: Newbie here....
May 17, 2024, 12:04:40 AM
Quote from: guitar_edg on May 16, 2024, 01:56:04 AM30 minutes on the 220 grit stone, and I still don't have a flat surface on the face of the chisel.

Back at it I go.

Been there. My son gave me his chisels and his "knock about" set were really badly damaged. One of the large chisels had a huge chip, took ages. I ended up going back to a belt to take it back past the chip then come back to the Tormek to finish it.
General Tormek Questions / Re: Newbie here....
May 14, 2024, 12:57:08 AM
Quote from: guitar_edg on May 13, 2024, 11:22:39 PMBDay on Wednesday, so I can't open it until then

Nice. If you are anything like me then the first few weeks you will be busy sharpening.
Quote from: John_B on May 12, 2024, 07:13:31 PMI do not use the paste very often and it seems to work fine

Remember that the grit in the paste will wear down quit rapidly so the best technique is little and often rather than a lot and seldom.
Quote from: cbwx34 on May 09, 2024, 05:19:25 PMI'm not a BESS fan... but according to this post, a 13-15 dps edge should be able to achieve a lower score.

I'm with you. There are a lot of factors that affect BESS score, including your testing technique.

Tests have shown that after a few minutes of use you typically end up at about 160 BESS so anything below this is probably acceptable. The SG-250 and leather wheel with the Tormek compound will never give you scores below 100. You need to go to the SJ-250, DE-250 and manually stropping or other diamond infused strop to get really good scores. Not to mention lower sharpening angles also lowers the BESS scores, but obviously the trade of with lower angles is more fragility.

Interestingly Bazz from Findon Sharpening has made a few videos showing him experimenting various techniques getting low scores where he uses the SJ and a manual strop charged with compound.
Quote from: AusSn on May 09, 2024, 02:09:03 AMWhat is the best practice to try and ensure the KJ-45 (or similar) is holding the blade level?  In other words so that for the most part the blade is perfectly horizontal.  Do people use a guide or jig?  Just eyeball it?

Sorry, not entirely sure what you mean. If you mean parallel to the surface of the wheel then the contact with the wheel does that. In addition if the water is flowing evenly over the knife then it is contact the whole way across.
If you mean at right angles to the edge of the wheel then that is not really as critical so just eyeball it as you say.
General Tormek Questions / Re: Newbie here....
May 07, 2024, 12:48:18 AM
Quote from: guitar_edg on May 06, 2024, 10:13:50 PMIs there anything else I need to know?

Oh yes - tons. Seriously though, I spent my life hand sharpening and getting good results but even so it takes time to get your eye in on the Tormek. Do not be discouraged if it takes a while to get used to all of the techniques required to achieve a satisfactory result. With all of that sharpening you will become a master in no time. When I first started using the Tormek it took time to be perfectly satisfied which the results. I found myself refining my technique as I gained more experience to get really good results.

Tip 1
My son gives me those desk calendars (usually Dilbert or The Far Side) and I use the old sheets for testing edges using the "paper test". I find them the perfect size and keep a stack on my bench in the corner. Bazz from Findon Sharpening uses those flyers and catalogues you get stuffed into your letter box to test his edges. You can probably cut them into squares.

Tip 2
Be very careful of the edge, and know where your band aids are. I was sharpening some chisels the other day and I happened to lightly brush the edge against my finger, ever so gently and raise a flap of skin. It leaves the edges very sharp indeed.

Tip 3
Refine your technique. As you get more experience you can use the Tormek videos and handbook to see where to improve to increase your efficiency, and sharpness.
General Tormek Questions / Re: Manual
May 07, 2024, 12:30:04 AM
Quote from: Ken S on May 06, 2024, 08:14:18 AMYour printed copy of the handbook should be a working book. Mine has a lot of underlining and hilighting. I note page numbers with topics in the front as well as notes in the margins.

All good tips Ken. It is a great resource.
Quote from: Sir Amwell on April 29, 2024, 08:34:17 PMIt is fairly well known I think that sharpening softer steels on CBN is inadvisable due to clogging effect.

I remember learning this when I was selling engineering  supplies in about 1980. This is because the softer materials tend to "rub" off and clog the wheel. The softer grinding materials such as aluminium oxide does the same but because it is softer it will wear away more quickly preventing clogging. It can clog but can be dressed.
Quote from: BaltoT on April 26, 2024, 04:32:24 PMAlso, what wheels/accessories/kits should I order with T-8 black. I will be using it for:
- chisels, including wide timber frame chisels and slicks
- planer blades
- knives (kitchen, etc)
- axes

The SE-77 jug for plane blades and chisels
The SVH-320 for planer blades
For the rest you can go a couple of ways. I got the HTK-806 hand tool kit which has the knife and axe jugs amongst other things. Otherwise you can go for the KJ-45 knife jig and the SVA-170 and add the others as you need them.

The other thing about the T8 black is that it only comes with the DF-250 which is good for general purpose sharpening but you may want extra wheels, say the SG 250 and/or the DC and DE wheels.

As for price I have found that here in Australia we can often get discounts on Tormek products. I often find around $100 off the wheels and similar discounts on other jigs et al. I check Amazon, Ebay and dealer's web sites. This may be due to our consumer laws which (mostly) outlaws price setting.