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Messages - John Hancock Sr

#31
General Tormek Questions / Re: grit thoughts
September 26, 2024, 06:54:50 AM
Quote from: 3D Anvil on September 26, 2024, 05:21:45 AMbut not ideal as the abrasive in the wheel is softer than the carbides in the blades.
Yes. A pretty basic principal in sharpening. Sharpening is in its most basic form scratching to remove material in order to create an edge. The finer the scratches the more refined the edge. De-burring is, again scratching away at the burr to remove it leaving a clean edge. In order to create the scritches you must use a harder material for the abrasive in order to scratch the softer material being sharpened.

In practice I found that I was glazing the SG wheel with harder steels which quickly rendered it ineffective.
#32
Quote from: Ken S on September 23, 2024, 04:26:55 PMI have been surprised with the small number of posts about convexing with the KJ-45
When I sharpened my hatchets and axes by hand I would always convex since it was really easy, not for any other reason. I know professional competitors will hone their axe face to ultimate precision but for me it is pretty much "get it cutting". I got to the point where I could shave with the axe pre Tormek but that took so long. Now I can get the same result in a fraction of the time and am soo looking forward to trying out the new jig.
For me the idea of concave vs convex vs flat is a moot point.
#33
General Tormek Questions / Re: grit thoughts
September 24, 2024, 02:17:54 AM
Quote from: Ken S on September 22, 2024, 10:35:02 PMI have long felt that the 220 and 1000 numbers were arbitrary and certainly not "digital" (either/or).
As you are probably aware the grit system is best described as "it depends". What the actual number means depends on which standard you are using and even then it is a range, not a fixed number. Assuming that the maker complies with whatever standard they are using the particle size will be within a specified range.

And to be blunt we are really talking about creating an apex. In the vast majority of applications so long as the apex is clean and consistent the tool will perform more than adequately, even if some scratches have been left behind.
#34
Mine is on order!
#35
Quote from: iSharpen on September 17, 2024, 12:28:21 PMAs for wrapping kangaroo tails around wheels I made a prototype. I wrapped one around an old CBN wheel that had failed.

I got a couple of 3D printed honing wheels and used veg tanned (from DS Horne) (I keep a coupe of half hides of various thicknesses for leather projects) I think 1.5 - 2 mm, and some contact. I used a quality contact that I used for leatherwork and that works a treat. I skived the ends of the strip with a taper of about 10mm and made sure the overlap was front to back so that it would not tent to lift with the rotation. Any slight hump left I cleaned up; with the skiving knife and a sanding drum on the Dremel.

With the 3D print use 100% infill around the pins otherwise they will break off.

I have been using the first one now for months with no issues and the second is the spare.
#36
Nice to see some familiar names mentioned from the chat.
#37
There is a YouTube channel called Tormek Innovation and they have many useful videos that go through using the Tormek and contain a lot of useful tips.

Quote from: cheater on September 18, 2024, 10:12:16 PMIs it fine to re-use the distilled water

Yes. However you don't need to use distilled water. Any water is fine. As for reuse - again re-use is perfectly fine. I decant mine into a bottle and I simply wash away the dregs in the bottom after using the magnet and scraper to clear out the shavings.

Quote from: cheater on September 18, 2024, 10:12:16 PMHow do you tip out the water?
There is a knob on the back that you can use to wind the water tray down. When it is fully down you can slide the tray out since it clears the wheel.

Quote from: cheater on September 18, 2024, 10:12:16 PMThe wheel is currently stuck on - I can't undo the thumb screw
Facing the front of the machine grasp the honing wheel with your left and and the grinding wheel with your right push the grinding wheel away from you (it has a left hand thread) at which stage it should come loose.

You should remove the wheel from the machine between use. It can become stuck if left on for too long. Avoid loosening the wheel by rotating the knurled knob.

Quote from: cheater on September 18, 2024, 10:12:16 PMIs it fine to use this wheel for grinding/shaping rather than only sharpening?
So long as you are not too aggressive. Be very gentle. Softer materials can clog the wheel so be aware of that.
#38
A review from Sharpening Supplies

https://youtu.be/b-q53A8-qBg?si=J-XZAVVJKV5acz2Y
#39
Quote from: Ken S on September 17, 2024, 04:54:05 PMOnce again, the Tormek Development Team has cleverly built ...

I agree. Just watching now and this will definitely be added to my jigs. Looks nice.
#40
I have sharpened many hatchets and an axe in my short time using the Tormek. One had about a 3 mm round over on the edge. This latter was being used by my son's neighbour who was wondering why it was not cutting. TBH I will not miss the old Axe jig. Not a huge fan.
#41
Quote from: Ken S on September 12, 2024, 03:53:51 PMI once attempted to watch a 42 minute youtube about a supposedly already reasonably sharp knife being "sharpened" with only a 4000 grit SJ-250. It was painful to watch.

I think we have all been there. Saying to myself "really!!!".
#42
I was in a similar situation but mine was bought at a auction sight unseen for 1/8th of new price. Whist the machine was fine the shaft was rusted and the wheel had to be replaced. With a new shaft and SG-250 it was as good as new. It is now doing good service in my son's shed.
#43
Knife Sharpening / Re: BESS Testing
September 02, 2024, 01:18:57 AM
The BESS tester is just a rough guide to sharpness. It is not designed to provide a repeatable consistent standards based sharpness test. The BESS tester bears no resemblance to a ISO sharpness test.

Your best way is to try to apply the edge consistently as best you can.
#44
Beautiful restoration. Lovely knife.
#45
General Tormek Questions / Re: Knowing Tormek ES-250?
September 02, 2024, 01:08:17 AM
It is the natural grindstone. Tormek went away from the natural grindstones years ago. I believe that it is a natural Aluminium oxide so is pretty much equivalent to the SG but natural rather than synthetic.

Many purists swear by natural stones claiming that they give a far more robust and sharper edge though much of this is probably perception rather than reality.

Synthetic stones can be produced with much higher consistency are reliability which is why most stones these days are synthetic.

Having said that if you do have the old ES then it should work perfectly fine ... until it wears down of course :)