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#21
General Tormek Questions / Re: Why so quiet?
Last post by John Hancock Sr - September 03, 2025, 07:27:07 AMI have an abrasive tutorial I am working on and am planning a You Tube video to accompany it. I have already done a lot of prep. here is the link.
https://docs.google.com/document/d/1MsXvMZ5ISZxjxvqt0FepLhsQKLw4_WsMnGq1auMtfSk/edit?usp=sharing
It is public so you should not need an account to see it.
I retired just over a month ago but I broke my wrist three weeks ago which cramped my style but that gives me time now to prep for the video.
https://docs.google.com/document/d/1MsXvMZ5ISZxjxvqt0FepLhsQKLw4_WsMnGq1auMtfSk/edit?usp=sharing
It is public so you should not need an account to see it.
I retired just over a month ago but I broke my wrist three weeks ago which cramped my style but that gives me time now to prep for the video.
#22
General Tormek Questions / Re: Why so quiet?
Last post by Ken S - September 03, 2025, 12:54:38 AMThere is plenty of room on the forum for new ideas. Dutchman saw an opportunity for making bevel angles and posted his grinding angles tables. Herman designed his homemade small platform. Every serious knife sharpener should have one.
Let's keep the good ideas coming!
Ken
#23
General Tormek Questions / Re: Sharpening Open House
Last post by Ken S - September 03, 2025, 12:31:55 AMJohn,
I wish I could go with you; it should be an enjoyable day, either way. I hope you will get a good chance to chat with John and Darren. Please be sure to give them my best wishes.
At the hotel breakfast the first day in Sweden, I shared a frustration with them. With some of the unboxing videos, the transportation spacer was considered a throw away item. I have made several. with a piece of plastic pipe and a drill press, it's not a big deal. I have always thought many Tormek users would prefer just to purchase a spacer instead of trying to cobble one together. I suggested it woul be a nice service to their customers if they carried them. Shortly thereafter, I noticed them listed in the spare parts. High marks for customer service! I ordered one and they emailed me to inform me that there would be no charge. In my book, that's a class act!
Please post your open house thoughts!
Ken
I wish I could go with you; it should be an enjoyable day, either way. I hope you will get a good chance to chat with John and Darren. Please be sure to give them my best wishes.
At the hotel breakfast the first day in Sweden, I shared a frustration with them. With some of the unboxing videos, the transportation spacer was considered a throw away item. I have made several. with a piece of plastic pipe and a drill press, it's not a big deal. I have always thought many Tormek users would prefer just to purchase a spacer instead of trying to cobble one together. I suggested it woul be a nice service to their customers if they carried them. Shortly thereafter, I noticed them listed in the spare parts. High marks for customer service! I ordered one and they emailed me to inform me that there would be no charge. In my book, that's a class act!
Please post your open house thoughts!
Ken
#24
Knife Sharpening / Re: Grinding recurve blades wi...
Last post by Nico - September 02, 2025, 09:45:37 PMQuote from: HaioPaio on September 02, 2025, 07:14:44 PMhttps://youtu.be/uj8P6O-qIYs
Here is a Tormek Video for gardening tools. Minute 53:53 shows a brush cutter blade sharpening.
Thanks... Very useful! I have blades like that one, which do have straight edges. The Echo blade however comprises a recurved section in between the triangular tips.
#25
General Tormek Questions / Re: Sharpening Open House
Last post by John_B - September 02, 2025, 09:45:21 PMI will probably go to this event. The big debate is whether to get up early and arrive by 10AM or to go up the day before and make a day of it then get up and go to the event. I am thinking we would enjoy the second option more.
#26
Knife Sharpening / Re: Grinding recurve blades wi...
Last post by Nico - September 02, 2025, 09:39:53 PMThanks for all the replies.
The blade is an Echo part. I have a brand new spare blade, and indeed, the curved parts that join the triangular tips are ground to a bevel. It's an extremely coarse bevel, to be sure, at least 30 dps, but it is a bevel nevertheless. From that stock image that bevel is not so visible, but it exists on my blade. The flat triangular parts don't pose any difficulties to sharpen like normal blades.
Thanks for confirming what I suspected with the diamond wheel. I will attempt it freehand with the SG-250, which I have created some generous radii on the edges.
The blade is an Echo part. I have a brand new spare blade, and indeed, the curved parts that join the triangular tips are ground to a bevel. It's an extremely coarse bevel, to be sure, at least 30 dps, but it is a bevel nevertheless. From that stock image that bevel is not so visible, but it exists on my blade. The flat triangular parts don't pose any difficulties to sharpen like normal blades.
Thanks for confirming what I suspected with the diamond wheel. I will attempt it freehand with the SG-250, which I have created some generous radii on the edges.
#27
Knife Sharpening / Re: Grinding recurve blades wi...
Last post by HaioPaio - September 02, 2025, 07:14:44 PMhttps://youtu.be/uj8P6O-qIYs
Here is a Tormek Video for gardening tools. Minute 53:53 shows a brush cutter blade sharpening.
Here is a Tormek Video for gardening tools. Minute 53:53 shows a brush cutter blade sharpening.
#28
Knife Sharpening / Re: Grinding recurve blades wi...
Last post by Sir Amwell - September 02, 2025, 06:35:22 PMI have a very similar if not exactly the same brush cutter blade. I'm almost certain that it is only the flat triangular section that you need to sharpen. As the previous poster said, should be no trouble on a Tormek.
#29
Knife Sharpening / Re: Grinding recurve blades wi...
Last post by tgbto - September 02, 2025, 03:34:31 PMI suppose that with (jedi-)master-level skills it could be doable. But it's probably a very bad idea.
Diamond wheels do not like pressure so if you use only the shoulder you'll have to be extra extra light, as all the force of the blade will be focused there. Avoiding damage will be very difficult, though if you have just a couple blades it might no be such an issue.
Conversely, you'll be applying all the grinding effect on just the part that touches the shoulder of the wheel. So you'll have a lot of action just there. Grinding evenly to maintain the shape will be a real challenge.
And as will all stones you can't use the usual means (jig/bar) that allow for controlled angle grinding, which will not help.
Now about your brush cutter, I can't help but wonder : Are you 100% positive it is a recurve blade ? It looks to me like a straight blade but ground only in the tip area. You shouldn't have too much trouble grinding those on the Tormek, even freehand.
Diamond wheels do not like pressure so if you use only the shoulder you'll have to be extra extra light, as all the force of the blade will be focused there. Avoiding damage will be very difficult, though if you have just a couple blades it might no be such an issue.
Conversely, you'll be applying all the grinding effect on just the part that touches the shoulder of the wheel. So you'll have a lot of action just there. Grinding evenly to maintain the shape will be a real challenge.
And as will all stones you can't use the usual means (jig/bar) that allow for controlled angle grinding, which will not help.
Now about your brush cutter, I can't help but wonder : Are you 100% positive it is a recurve blade ? It looks to me like a straight blade but ground only in the tip area. You shouldn't have too much trouble grinding those on the Tormek, even freehand.
#30
Knife Sharpening / Grinding recurve blades with T...
Last post by Nico - September 02, 2025, 02:14:49 PMHi,
From the various instructional videos I've seen about sharpening recurve blades, the central theme seems to be that the grinding wheel must have have a radius on the edges, over which the recurve section is carefully ground.
This is fine with wheels like the SG-250, but how about if you want/need to use a diamond wheel like the DC-250? As I understand it, the diamond wheels consist of a rigid cylindrical form on which diamonds are deposited - the edges cannot simply be ground over to make a radius. The edges are always going to be 90°
Any thoughts then on using the Tormek diamond wheels to grind recurve blades?
TIA,
Nico
PS: I am attempting to re-establish the edge on a cutting blade for a brush cutter. Kind of looks like this:
From the various instructional videos I've seen about sharpening recurve blades, the central theme seems to be that the grinding wheel must have have a radius on the edges, over which the recurve section is carefully ground.
This is fine with wheels like the SG-250, but how about if you want/need to use a diamond wheel like the DC-250? As I understand it, the diamond wheels consist of a rigid cylindrical form on which diamonds are deposited - the edges cannot simply be ground over to make a radius. The edges are always going to be 90°
Any thoughts then on using the Tormek diamond wheels to grind recurve blades?
TIA,
Nico
PS: I am attempting to re-establish the edge on a cutting blade for a brush cutter. Kind of looks like this: