Re: Wheels
Lyn J. Mangiameli
>We usually agree on most things, but I realize we diverge in this area.
I'm a flat woodworker as well, known for my handplane studies. The best approach I've found for preparing the backs of plane blades and chisels is a series of Shapton ceramic "waterstones" of sizes 100, 320, 1000, 2000, 5000, 8000 and 12000. That's over $400 dollars in waterstones. Waterstones have lots of advantages, though wear is not one of them. When I consider that those 7 waterstones don't have much more material in them than one Tormek wheel, I find the Tormek wheel is quite reasonably priced compared to the better waterstones.
Now this raises the issue of whether an aluminum oxide waterstone should be the prefered media for the Tormek grinding wheel. Well, if you value the ability to "grade" the wheel between 220 and 1000 (I do, though some may not), you are essentiall getting two wheels for the price of one. That in my opinion raises the value of the Tormek wheels. Another thing that raises the value for me is that I'm talking about a stone that is twice as wide as the typcial dry grinding wheel. This gives me more space to work a complex grind, and alows one to spread the wear over more of the surface.
I've had my Tormek for around a half dozen years now. I'm still on the original wheel. Now I most certainly not a production turner and so my wheel doesn't see anywhere near as much use as yours might, but I suspect that my use is pretty close to the serious recreational turner. If I can get 5-7 years out of a wheel, or even only only 4 years out of a wheel, that would mean the wheel would cost me at or something less than $30 a year, a price that is quite acceptable to me. Gee, when I compare that to what I spend in a year on bandsaw blades, it is an absolute bargain. And when I add in the matter of extended tool life, I consider the Tormek to be a cost savings device, not a high cost item.
Now I must admit, I don't go back and forth between gouges and flat blades regularly. Indeed, my Tormek is almost exclusively relegated to gouge maintainance these days. For that purpose, a little grooving is not big deal, and dressing is infrequent. For that matter, a little grooving isn't any big deal for most flat blades either if you are moving the blade from side to side over the face of the stone. I suppose if extreme reduction in wear was an issue for someone who was frequently switching back and forth between plane blades and bowl gouges, for instance, then it might be best to just get a second wheel and change between them (its an easy thing to remove and remount a wheel, much quicker on a Tormek than the typical dry grinder). The higher up front cost would be returned in exceptional long term life.
But mostly, if you are willing to settle for dry grinding performance, why not just use save you Tormek for one use (flat or curved) and skip the other (I know, now you feel you need a new wheel, but you could have done this earlier).
You have asserted that once you learn to lightly touch a gouge to an 80 grit wheel you do not waste any more of the tool than you do with the Tormek. I don't think this captured the whole picture. One, tool life will depend heavily on five things, the edge retention properties of the tool steel (which will be fixed between the grinding systems), the material being cut (again fixed between systems), the geometry of the tool edge (again fixed), the ability to repeat the original geometry when grinding (the Tormek has an excellent means to repeat this, it will vary on a dry grinder depending on the jigging system, if any, that is used), and the refinement of the edge that is largely a function of the grit size used to form it (the Tormek wins hand down in this regard). The only objective experiments comparing wet Tormek grinding to a quality dry grinders have found the Tormek results in greater edge retention, thus tool life. So just how fine a touch you use on a dry grinder is not the whole issue, and will not provide the same benefits.
You know, I have two of the dry grinders of model we both like, four different wheels, and I have three different jigging systems to use with them. I can still say that my Glaser tools have never seen a dry grinder and never will. Given the cost of that Glaser style, I'm way ahead using the Tormek on them.
I agree with you that it is desirable, almost essential, to have some dry grinder in addition to a Tormek (mostly just to acheive major geometry changes--something I've never felt a desire to do with a Glaser tool), and I agree with you that having a Tormek is not essential. But I don't agree with you about the inherent value of the Tormek as a package, or even with respect to its wheel.
I keep hearing folks say how expensive a Tormek is, but I simply don't find a Tormek with a well selected assortment of jigs to be more expensive than a dry grinder of comparable quality. If we take the 8 inch Delta model we both like, add a high quality jigging system to it like the Kelton or Wolverine or TruGrind, upgrade the wheels, possibily add balancers, etc, one gets in the same ball park as a Tormek with a Universal Gouge Jig, a stone grader, and a t-handle diamond dresser.
Then there are the things about the Tormek that are so often overlooked. There are no wheel you have to worry about exploding, no dust particles that are damaging to the lungs, and no need for eye protection (which makes it easier to examine that edge). I just find the Tormek to be a much more user friendly and safer way to grind--something that goes a long way against the few seconds longer it might take to achieve an edge.
I'm truly not trying to convince you to do things any differently, afterall, our usage and needs are dramatically different with you being a true woodturning pro and me being just a recreational turner. But I think your condemnation of the Tormek and particularly its wheel are too broad and not that applicable to a lot of us other turners.