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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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Sharpening.
Well, I now have my lathe, a big pile of mesquite, and a Sorby 1/2"
fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. I used a very light touch and did not mess up the profile, but it's obvious that if I do it this way a couple more times I will mess it up. Local Rockler has a week turn around on sharpening. I'm thinking jig at this point. Cost IS a consideration right now. Any suggestions on what and where to buy one? Thanks, Wayne in Phoenix |
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Wayne,
I'm sure you'll gets lots of advice. But I'm a big fan of the Wolverine system and can very quickly do a gouge with very consistent results. I would also highly recommend the sharpening video put out by AAW. There are four turners showing the correct way of sharpening each of the major turning tools. John Jordan does the gouges and uses a Wolverine system. I had trouble as well but after viewing the JJ portion of this video, all was revealed and it works like a dream very time. I've got mine mounted under a high speed grinder with 6 inch Norton wheels. Hope this helps -- George L. Tanty Santa Fe, NM |
#3
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Well, I now have my lathe, a big pile of mesquite, and a Sorby 1/2"
fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. Local Rockler has a week turn around on sharpening. I'm thinking jig at this point. Any suggestions on what and where to buy one? Wayne, Go to Darrell Feltmate's home page http://www.aroundthewoods.com/ and check out his section on sharpening. He has built the equivalent of the Oneway Wolverine system with their Varigrind jig. Ultra simple but well thought out. You should be able to make copies of his jigs for less that $20 (my estimate) and repeatably sharpening that bowl gouge in no time. It is a great site. Hope this helps, Harry |
#4
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The jig and fixture shown are very good. Maybe I should have a setup
similar to the one shown. However after talking to many experienced turners who own a Oneway Wolverine system of its equivalent I soon learned that they do not use it all the time. When turning a 10" bowl blank I have to sharpen my gouge 2-4 times. The overall length of the tools to be sharpened are not always the same and the system requires adjustments to maintain the desired angle. What I made is an adjustable stand as shown in Brian Clifford notes. One side of the grinder is set at 45 degrees for the gouges and the other side is set for the scrapper angle. I hold the tool parallel to the angle guide and perpendicular to the grinder wheel then I rotate the gouge as required. I takes me about 10-20 seconds. For the scapers I do the same thing but rotate the tool from left to right. Some parting tools may require different settings on the adjustable platform. Last week I visited an 84 years old woodturner. He uses 12 inches wheel without any guiding devises. "Harry B. Pye" wrote in message roups.com... Well, I now have my lathe, a big pile of mesquite, and a Sorby 1/2" fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. Local Rockler has a week turn around on sharpening. I'm thinking jig at this point. Any suggestions on what and where to buy one? Wayne, Go to Darrell Feltmate's home page http://www.aroundthewoods.com/ and check out his section on sharpening. He has built the equivalent of the Oneway Wolverine system with their Varigrind jig. Ultra simple but well thought out. You should be able to make copies of his jigs for less that $20 (my estimate) and repeatably sharpening that bowl gouge in no time. It is a great site. Hope this helps, Harry |
#5
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There are some videos you can download on the Oneway site showing the
Wolverine/Varigrind jigs in action. http://www.oneway.on.ca/multi-media.htm and for another home made jig check Jean Michels page for woodturning jigs http://www.jeanmichel.org/woodturnjigs.htm "RW" wrote: Well, I now have my lathe, a big pile of mesquite, and a Sorby 1/2" fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. I used a very light touch and did not mess up the profile, but it's obvious that if I do it this way a couple more times I will mess it up. Local Rockler has a week turn around on sharpening. I'm thinking jig at this point. Cost IS a consideration right now. Any suggestions on what and where to buy one? Thanks, Wayne in Phoenix |
#6
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RW wrote:
.... and a Sorby 1/2" fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. My advise to anyone who has spent money buying a gouge with a speciality-grind is to either take close-up photos or careful drawings of it before you use it or take it to the grinder. Even with a sharpening jig, it may not be very long before the edge of the tool bears little resemblance to how it was when bought. One of the fundamental skills involved in sharpening is knowing the exact shape you are aiming for. The only supplier I know of who has done this right is Melvyn Firmager. He supplies a set of pewter models of the custom grinds he sells for natural edge and hollow vessel work. One of the first things I explain to students who ask about purchasing bowl gouges is that what you are really buying is the flute, rather than any fancy grind the manufacturer has applied. It really annoys me that so few catalogs show the cross section of the flute but make such a big deal about the grind. -- Derek Andrews, woodturner http://www.seafoamwoodturning.com Wedding Favors ~ Artisan Crafted Gifts ~ One-of-a-Kind Woodturning |
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I am an old woodworker but have been turning less than one year. From what
I have seen from this group, I am not alone in realizing that gouge sharpening is a difficult skill that has to be mastered. I have not. I visited Turn about wood (www.turnaboutwood.com) in Kansas City a several weeks ago and asked about sharpening aids. Dan Moreno took me back to their classroom/demo shop, handed me a couple of dull gouges and talked me through sharpening them myself using the Wolverine system. The first time I touched the system produced very nice results. My wife watched and I suspect the birthday fairy is going to drop a system off in a few weeks. By the way, Darrell Feltmate's shop made jig http://www.aroundthewoods.com/ looks like it incorporates the same geometry lesson as the Wolverine. |
#8
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Wed, 1 Sep 2004 13:51:58 -0700, "RW" wrote:
Well, I now have my lathe, a big pile of mesquite, and a Sorby 1/2" fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. I used a very light touch and did not mess up the profile, but it's obvious that if I do it this way a couple more times I will mess it up. Local Rockler has a week turn around on sharpening. I'm thinking jig at this point. Cost IS a consideration right now. Any suggestions on what and where to buy one? Thanks, Wayne in Phoenix You've gotten good advise for the Wolverine system. This'll work great since you've already got a bench grinder. But there's also another route. First, a disclaimer. I am not affiliated with any toolmaker or seller of any kind. I'm only a satisfied user. I use the Tormek system. With the appropriate jigs, it'll reliably sharpen the same profile time after time. If you want, it'll also reshape the profile to something else, and then be repeatable to that new profile. The Tormek's problem is that it's expensive. I got over that a long time ago. This isn't to say it's perfect, but for turning tools, I don't think there's any better. You can get one online at www.sharptools.com There's otherplaces too, like Woodcraft. |
#9
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RW" wrote in message ...
Well, I now have my lathe, a big pile of mesquite, and a Sorby 1/2" fingernail bowl gouge. My problem is the gouge. It needs to be sharpened. I tried by hand on my 8" grinder and the results are ugly. I used a very light touch and did not mess up the profile, but it's obvious that if I do it this way a couple more times I will mess it up. Local Rockler has a week turn around on sharpening. I'm thinking jig at this point. Cost IS a consideration right now. Any suggestions on what and where to buy one? Thanks, Wayne in Phoenix Wayne, I'm a newbie turner also and had suffered through 6 months of trying to sharpen my tools by hand. Whew. The result was dull tools with multiple edges on the bevel. My brother-n-law can take a gouge, put it on the grinder free hand and get a perfect grind with very sharp edge. However, I am the opposite extreme and could not master that free hand technique so I just recently purchased the Wolverine Grinding jig. Now that it's mounted under my grinder, I can produce a perfect grind with very sharp edge. It was amazing to me how easy it was on the first attempt. You can get this from Woodcraft at the following URL: http://www.woodcraft.com/Woodcraft/p...6598E23D 394A I had also looked at Darrell Feltmate's homeade jig shown on his web page http://www.aroundthewoods.com/sharp.shtml. It works basically like the Wolverine. I just preferred to spend my time turning instead of building a jig, so I opted to purchase one. The Wolverine fit the bill. Not too expensive but produces great results. Either way.....build or buy.....you'll benefit greatly a jig. It's truly amazing how much better my turnings look and how much easier it is to turn with sharp tools! Probably safer too! Get a jig. Happy turning, Walker |
#10
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I took the plunge on a Tormek as well. IMHO, it is invaluable for a
beginner, because I can spend my time learning to turn, rather than learning to sharpen. I have found some limitations to the system, but very few. Once I become a competent turner, perhaps I'll learn to free-hand grind my tools. Until then, I love my Tormek. "Lazarus Long" wrote in message ... I use the Tormek system. With the appropriate jigs, it'll reliably sharpen the same profile time after time. If you want, it'll also reshape the profile to something else, and then be repeatable to that new profile. The Tormek's problem is that it's expensive. I got over that a long time ago. This isn't to say it's perfect, but for turning tools, I don't think there's any better. You can get one online at www.sharptools.com There's otherplaces too, like Woodcraft. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.745 / Virus Database: 497 - Release Date: 8/27/2004 |
#11
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On Thu, 02 Sep 2004 22:56:22 GMT, "Alan Van Art"
wrote: I took the plunge on a Tormek as well. IMHO, it is invaluable for a beginner, because I can spend my time learning to turn, rather than learning to sharpen. I have found some limitations to the system, but very few. Once I become a competent turner, perhaps I'll learn to free-hand grind my tools. Until then, I love my Tormek. What sort of limitations have you found? In my case, I think the hollow grind it produces on a chisel leaves a weaker cutting edge, so I'll take it over to a high grit waterstone for a few laps. That seems to put enough flat on it to keep the edge from dulling quite as fast. This could apply to a plane iron too, but those don't get exactly the same use as a chisel. For turning tools, those are sharpened way more frequently anyway, and the grind is not so easy to do without a jig. BTW, it's my opinion that if one uses a jig, they'll never acquire the skill to hand hold the tool for sharpening. I don't see a problem there, after all, that's what a Tormek (or Wolverine) is all about. "Lazarus Long" wrote in message .. . I use the Tormek system. With the appropriate jigs, it'll reliably sharpen the same profile time after time. If you want, it'll also reshape the profile to something else, and then be repeatable to that new profile. The Tormek's problem is that it's expensive. I got over that a long time ago. This isn't to say it's perfect, but for turning tools, I don't think there's any better. You can get one online at www.sharptools.com There's otherplaces too, like Woodcraft. |
#12
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I don't see a problem with the hollow grind, it's less 'hollow' than
the grind from other wheels anyway. The limitations I find are mostly with short tools. I have a few that I got second hand that are too short to use the appropriate jig. Plus I have tried to sharpen pocket knives and such with it that wouldn't fit the knife jig because they were too small in one dimension or another. Another thing you might call a limitation is how long it takes the change a profile on a tool. Of course, grinding slowly also means your tools might last a bit longer, since you're taking off less material for each sharpening. I don't think there are any jigs for some of the specialty tools available either. Like the beading tools that some people were recommending to me in another thread, I don't know how you would sharpen them. It won't do double-bit axes, naturally that's the only axe I have. Or ring tools, or some hollowing tools... I love my Tormek, and would buy it again, but it isn't the end-all sharpening solution. Lazarus Long wrote in message . .. On Thu, 02 Sep 2004 22:56:22 GMT, "Alan Van Art" wrote: I took the plunge on a Tormek as well. IMHO, it is invaluable for a beginner, because I can spend my time learning to turn, rather than learning to sharpen. I have found some limitations to the system, but very few. Once I become a competent turner, perhaps I'll learn to free-hand grind my tools. Until then, I love my Tormek. What sort of limitations have you found? In my case, I think the hollow grind it produces on a chisel leaves a weaker cutting edge, so I'll take it over to a high grit waterstone for a few laps. That seems to put enough flat on it to keep the edge from dulling quite as fast. This could apply to a plane iron too, but those don't get exactly the same use as a chisel. For turning tools, those are sharpened way more frequently anyway, and the grind is not so easy to do without a jig. BTW, it's my opinion that if one uses a jig, they'll never acquire the skill to hand hold the tool for sharpening. I don't see a problem there, after all, that's what a Tormek (or Wolverine) is all about. "Lazarus Long" wrote in message .. . I use the Tormek system. With the appropriate jigs, it'll reliably sharpen the same profile time after time. If you want, it'll also reshape the profile to something else, and then be repeatable to that new profile. The Tormek's problem is that it's expensive. I got over that a long time ago. This isn't to say it's perfect, but for turning tools, I don't think there's any better. You can get one online at www.sharptools.com There's otherplaces too, like Woodcraft. |
#13
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Here are some of the things that have helped me around a few of the
limitations you have encountered. The relatively recent and inexpensive Short Tool Jig (SVS-32) helps a lot to deal with a fairly wide range of shorter shank and/or miniature tools. Get a second Torlock Tool Rest (SVD-110) and cut it down to half its forward to back width (narrow it too if you need to) and this will allow you to deal with short shaft scrapers. If you think you will ever wish to sharpen scissors, get the scissors jig and temporarily remove the locking plate clamps. This will give you a shallower table without having to cut down a the full size toolrest. I usually deal with my ring style hollowing tips on a verticle belt sander, but you can sharpen them quite effectively on a Tormek as well using a narrower table (either approach above) and using it vertically oriented in the vertical tool support. Angle the table enough to give you the desired bevel. This is actually a very effective means to deal with all but the very smallest ring tips (the very small Termite tip). This is also the technique that works well dealing with carving and chair making scorps. You can use the adapter shaft from the SVD-185 Gouge Jig to help hold the rings if you need to. With reference to the latter, for other small hollowing tool bits, the rod now included with the SVD-185 Gouge Jig is available in an upgrade kit for the older 180 models. It helps mount those small hollowing tool cutting bits, though I must admit I still prefer using a vertical belt sander for this purpose. As for the knife jigs, you can again get a regular knife jig (SVM-45) and use a dry grinder or sander to narrower it to accompdate your blade. You may also find the above mentioned scissor jig will work to hold such smaller blades. While free hand sharpening is not as easy to do on the Tormek because of its slow speed (thus requiring a steadier hand to hold the tool in position for a longer time) it is ofen feasible. There is no tool I can readily think of that can be sharpened on a dry grinder that can't be sharpened free hand on a Tormek. Usually with the assistance of a vertically or horizontally oriented table you can obtain the support necessary to compensate for the slow speed. The biggest problem with the Tormek as how long it takes to make major profile/geometry changes. This can be helped slightly by getting a T-handle flat face style diamond dresser and use this to dress the face of the stone to a coarser surface than the stone grader will do. This will make the stone more agressive for a short while. In the end, for major changes, some form of dry grinder or sharpener is desirable. This can be a very inexpensive unit such as the $50 6 inch Delta Grinder, or the inexpensive (if you can salvage an appliance motor) vertical belt sharpening station from Lee Valley. I agree the Tormek is certainly not a perfect machine, but it is almost surely the most versatile sharpening system out there, and with a little imagination and experimentation can sharpen tools of an even greater range than already expected Alan Van Art wrote: snip The limitations I find are mostly with short tools. I have a few that I got second hand that are too short to use the appropriate jig. Plus I have tried to sharpen pocket knives and such with it that wouldn't fit the knife jig because they were too small in one dimension or another. Another thing you might call a limitation is how long it takes the change a profile on a tool. Of course, grinding slowly also means your tools might last a bit longer, since you're taking off less material for each sharpening. I don't think there are any jigs for some of the specialty tools available either. Like the beading tools that some people were recommending to me in another thread, I don't know how you would sharpen them. It won't do double-bit axes, naturally that's the only axe I have. Or ring tools, or some hollowing tools... snip |
#15
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I noticed a remark considering the tool length for use in the jig.
The Woodcut Tru-grind has a much shorter body then the Canadian system and can be used with shorter tools. It also can hold chisels up to 1 1/2" across which neither of the other systems can do. Ken Port Tool designer "Alan Van Art" wrote in message news:qyNZc.1573$ZS6.923@trndny07... I took the plunge on a Tormek as well. IMHO, it is invaluable for a beginner, because I can spend my time learning to turn, rather than learning to sharpen. I have found some limitations to the system, but very few. Once I become a competent turner, perhaps I'll learn to free-hand grind my tools. Until then, I love my Tormek. "Lazarus Long" wrote in message ... I use the Tormek system. With the appropriate jigs, it'll reliably sharpen the same profile time after time. If you want, it'll also reshape the profile to something else, and then be repeatable to that new profile. The Tormek's problem is that it's expensive. I got over that a long time ago. This isn't to say it's perfect, but for turning tools, I don't think there's any better. You can get one online at www.sharptools.com There's otherplaces too, like Woodcraft. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.745 / Virus Database: 497 - Release Date: 8/27/2004 |
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