what is best sharpening system, Sorby Pro or CBN wheels
Interesting that you use an 80 grit CBN for your bowl gouge. I’ve always used 600 grit for my bowl gouges. My thinking is that it takes so little off the gouge, I should get much longer life from it. Your thoughts?First off you will not get an absolute answer but a lot of different opinions. There is not an agreed to best among turners.
You should add The tormek and its knock offs. These have a lot of fans - I use mine for skews.
Few turners use the belt systems as their sole sharpening system.
Lots of turners have used belt sanders for some sharpening or shaping or until they can get grinder.
I use an 8” grinder with an 80 grit CBN wheel for the bowl gouge and a 180 CBN for most everything else
Now for another boat load of opinions on the grit wheels to use.
In favorable turning situations I can get a 320 sandable surface with a pull cut using my gouge sharpened on an 80 grit wheel - no honing.
I use the Ellsworth jig on my bowl gouges and freehand with the platform with other tools.
If you can’t decide between the belt and CBN
A friend of mine has a tradesman with a belt and a CBN - she loves it.
Thank you for the comparisons. What is a Tormeck knock off?@hockenbery gave you a great response.
One thing he didnt really address is grinding. Def - grinding is major material removal to significantly change the tool shape. I’ve done a lot of this with scrapers and bowl gouges. 80 gr cbn is very slow for this. I use a 46gr stone wheel. Sharpening then follows grinding.
I think I’m one of the few that hasn’t changed to cbn, mainly due to getting a really good buy on stone wheels from someone who did convert.
I use a grizzly tormek knockoff, with tormek jig and tools, to sharpen gouges. I prefer it to cbn due to the slow material removal and control it provides (I’ve used 180gr cbn, much greater material removal). I use an 80gr stone wheel to sharpen other tools (mainly scrapers and skews), and hand hone those, and strop skews on the grizzly.
I considered belt sander types. I would go through a lot of belt swaps, which would get old fast for me. I like have the machine with the grit needed ready to be turned on and go. Personally I dont find the need to dress the stone wheels occasionally a big deal, one of the big reasons folks like cbn.
Does the Wolverine system handle an Irish grind?. The Sorby system seems pretty easy to use and can accomodate everything from skews to long grinds. since i don’t have a lot of experience with tool sharpening, I bought the Sorby system because it seems very intuitive.I like the wolverine system over the belt sanding systems for the versatility.
Thank you. I am a member of a local club and have had several offers from members to provide advice on sharpening, which I plan to follow up.A local woodturning group can be invaluable - opportunity for discussion rather than back and forth text; opportunity to see and hopefully try others' sharpening systems before making a purchase.
First, I would suggest becoming knowedgeable on the importance of shape and the recommended shape(s) for individual tools and situations; the concept of "floating/gliding/riding" the bevel and relieving the heel; what is a sharp cutting edge. A sharp cutting edge on a poor shape for the situation will not work any better than a dull cutting edge.
What is the cost of the Wolverine system? Is there a learning curve for it? My Sorby system is pretty much self explanatory and the angle guide makes lining up the tool for sharpening very easy. It is a belt system and the belts do wear out fast but replacing a belt is very quick and easy.I like the wolverine system over the belt sanding systems for the versatility.
My thought is the 80 grit gives a slightly serrated edge that cuts nicely and is relatively durable.Interesting that you use an 80 grit CBN for your bowl gouge. I’ve always used 600 grit for my bowl gouges. My thinking is that it takes so little off the gouge, I should get much longer life from it. Your thoughts?
I also use a 80 grit CBN wheel for my bowl gouges and a pocket CBN stone for between wheel sharpenings. Not much steel is removed in the sharpening process using a Wolverine sharpening rig.Interesting that you use an 80 grit CBN for your bowl gouge. I’ve always used 600 grit for my bowl gouges. My thinking is that it takes so little off the gouge, I should get much longer life from it. Your thoughts?
Tormek is a water wheel sharpening system..What is a Tormeck knock off?
As Hockenberry said, And, There's also Wen (Easy to find on Amazon) which is quite cheap but I find the brand is usually pretty reliable (I have 3 wen products and have had no trouble with any of them)Thank you for the comparisons. What is a Tormeck knock off?
Yes Wolverine (With the Vari-Grind jig) handles irish grind (AKA Ellsworth Grind, which is similar but not as long of a wing) quite well - It is what I use. However since you say you already have the sorby and are happy with it, I'd say stick with what works - There are several versions of grinding jigs and platforms (even for the Tormek and its knock-offs) and any of them have their own pros and cons, just like the Sorby belt system does. Wolverine system I believe runs less than $200 USD , but does not include a grinder (I have a Rikon 1/2 HP at $160, the wolverine system w/ Vari-grind at $190, and 2 CBN wheels at around $150 each, so cost wise , little different from the Sorby system, which I presume comes with all the needed stuff in one kit) I recently upgraded my grinder with a new Kodiak platform to replace the relatively flimsy wolverine (which was still FAR better than the standard tool rest that comes with the grinder!)Does the Wolverine system handle an Irish grind?. The Sorby system seems pretty easy to use and can accomodate everything from skews to long grinds. since i don’t have a lot of experience with tool sharpening, I bought the Sorby system because it seems very intuitive.
It is made by Grizzly Industrial. Mine is the previous model but very similarThank you for the comparisons. What is a Tormeck knock off?
I’m going to try my 180grit CBN next time and see if I notice a difference. I can usually get the gouges sharp with either one or 2 passes with the Wolverine setup on the 600 wheel. Thanks for the info.My thought is the 80 grit gives a slightly serrated edge that cuts nicely and is relatively durable.
A lot of the turners I discussed sharpening with prefer a coarser wheel for bowl gouges.
I’ve use some fine grits in demos haven’t seen the edge perform better.
You are probably right that the gouge lasts longer with a 600 grit sharpening.
Not sure it’s significant. Every few sharpenings, I need a second pass on the 80 grit wheel to get sparks breaking over the whole edge.
Would this be 2 passes on a 600 grit wheel or more?
I had that problem some years ago. I finally decided it was because I hadn't set up the Vari-Grind carefully enough - the "arm" was not perfectly centered on the wheel, if that makes sense. I redid the whole thing and it was much better.Does anybody else ever have an issue with the wolverine/varigrind system not hitting both wings equally? One or two passes for one wing and several passes for the other wing. I try to make certain the gouge is snugged up and level in my depth jig (and the screw-down clamp should make it level/even anyway).
Do you really use both wings? Do they really have to be perfectly identical? I always consider that I can spend a little more time on one side or the other to get them very close.Does anybody else ever have an issue with the wolverine/varigrind system not hitting both wings equally? One or two passes for one wing and several passes for the other wing. I try to make certain the gouge is snugged up and level in my depth jig (and the screw-down clamp should make it level/even anyway).
I had that problem some years ago. I finally decided it was because I hadn't set up the Vari-Grind carefully enough - the "arm" was not perfectly centered on the wheel, if that makes sense. I redid the whole thing and it was much better.
Thanks, David and Steve. Very helpful. I'll give it a closer look.David is correct, get those bases dead parallel with and centered on the wheels. Take the wheel covers off and use a square of some kind to transfer the plain of the side of the wheel (from the 3 and 9 o'clock areas of the wheel sides) to your grinder mount surface and strike a reference line, then you can work the mounts from those lines. I hope this description makes sense.
It isn't that the wings aren't perfectly matched. It's that upon contact, the grinding wheel hits the heel too much on one wing and excessive grinding has to be done before the wheel hits the cutting edge. So, more time but also much more steel has to be ground away on one side before an edge is achieved on that wing.My grinds are never 'perfect'. My noses are seldom perfectly centered, and the wings also may be longer or shorter on one side. It doesn't make any difference on how they cut. I do use scrapers for all of my shear scraping, mostly because I consider them better for the job than gouge wings.
robo hippy
It isn't that the wings aren't perfectly matched. It's that upon contact, the grinding wheel hits the heel too much on one wing and excessive grinding has to be done before the wheel hits the cutting edge. So, more time but also much more steel has to be ground away on one side before an edge is achieved on that wing.
The tilting in the jig is what it seems like so I've been certain as I can that it sits flat under the locking "screw". I've considered putting a metal washer on the bottom of the screw lock to ensure even pressure/flatness. I will also check the varigrind edges. Thanks.Something is changing your geometry between sharpenings so that one wing is closer to the wheel than the other from the last time you sharpened.
It sounds like the tool is tilted in the jig, or the tool is locked in at a slight angle or the jig isn’t turning smoothly on the pivot point.
Make sure you are locking the tool squarely in the jig. You might be putting pressure on the jig as you tighten the lock. Inconsistent pressure can change that angle off true.
Also I had a varigrind with really square edges. It didn’t turn smoothly in the vee pocket.
I gently rolled the tool on the grinder.
I took no metal off the end of the varigrind just softened the 4 edges so it spun 8n Planck n8cely.
I found a similar situation when I started with the Vari grind jig, not super bad but definitely annoying. I figured out that it was due to the plastic clamp pad in the Vari grind jig getting slightly deformed/grooved by the edge of the gouge. If the old grooves in the pad didn’t match edges of the gouge I was putt8ng in, the gouge would twist a little (do to the lumps in the pad) leading to the uneven passes.Does anybody else ever have an issue with the wolverine/varigrind system not hitting both wings equally? One or two passes for one wing and several passes for the other wing. I try to make certain the gouge is snugged up and level in my depth jig (and the screw-down clamp should make it level/even anyway).
I had that problem some years ago. I finally decided it was because I hadn't set up the Vari-Grind carefully enough - the "arm" was not perfectly centered on the wheel, if that makes sense. I redid the whole thing and it was much better.
David is correct, get those bases dead parallel with and centered on the wheels. Take the wheel covers off and use a square of some kind to transfer the plain of the side of the wheel (from the 3 and 9 o'clock areas of the wheel sides) to your grinder mount surface and strike a reference line, then you can work the mounts from those lines. I hope this description makes sense.
Something is changing your geometry between sharpenings so that one wing is closer to the wheel than the other from the last time you sharpened.
It sounds like the tool is tilted in the jig, or the tool is locked in at a slight angle or the jig isn’t turning smoothly on the pivot point.
Make sure you are locking the tool squarely in the jig. You might be putting pressure on the jig as you tighten the lock. Inconsistent pressure can change that angle off true.
Also I had a varigrind with really square edges. It didn’t turn smoothly in the vee pocket.
I gently rolled the tool on the grinder.
I took no metal off the end of the varigrind just softened the 4 edges so it spun 8n Planck n8cely.
Okay. It's over 100 degrees today and I've no heat/air in the shop but I had to go try all of this.I found a similar situation when I started with the Vari grind jig, not super bad but definitely annoying. I figured out that it was due to the plastic clamp pad in the Vari grind jig getting slightly deformed/grooved by the edge of the gouge. If the old grooves in the pad didn’t match edges of the gouge I was putt8ng in, the gouge would twist a little (do to the lumps in the pad) leading to the uneven passes.
To solve the problem I simply used a sharpie to mark a spot on the plastic clamp pad and now always make sure this mark is in the same spot when I tighten it down. Since doing this there has been very little trouble with uneven sharpening.
Something is changing your geometry between sharpenings so that one wing is closer to the wheel than the other from the last time you sharpened.
It sounds like the tool is tilted in the jig, or the tool is locked in at a slight angle or the jig isn’t turning smoothly on the pivot point.
Make sure you are locking the tool squarely in the jig. You might be putting pressure on the jig as you tighten the lock. Inconsistent pressure can change that angle off true.
Also I had a varigrind with really square edges. It didn’t turn smoothly in the vee pocket.
I gently rolled the tool on the grinder.
I took no metal off the end of the varigrind just softened the 4 edges so it spun 8n Planck n8cely.
My grinds are never 'perfect'. My noses are seldom perfectly centered, and the wings also may be longer or shorter on one side. It doesn't make any difference on how they cut. I do use scrapers for all of my shear scraping, mostly because I consider them better for the job than gouge wings.
robo hippy
Actually I am able to do it with a jig. One wing is Ellsworth like and the other is 40/40 like, both of which I can do with a tormek jig. Just a matter of grind time.suggest having a peek at Richard Raffan's Asymmetric grind - I did such a grind on an old gouge (It has to be done freehand but do-able)