04-26-2018, 11:51 PM
Valuable insight on light pressure, grepper! I'll make that my mantra as I practice.
Ken, the way you speak of Tormek piques my interest. I'm going to take another look at the system, just to see how it's evolved over the last few years. And how did you get a motorless Kally? If it were readily available, I might have started with a 1SM skeleton and added my own motor and VFD. One reason I got the Viel was that I could add my own motor, but it has a larger drive wheel than the Kally.
Mark, I'm surprised at how slow you're talking about, and it makes a lot of sense. I set my VFD at 10/100 and counted about 90 rpm, which is still around 140 SFPM. It's hard to consistently dial a slower rate below that without going to zero. I'm going to play with the MIN/MAX trimpot adjustments to see if I can get more usable range on the low end. Full speed is 2710 SFPM, scary fast! I can't imagine learning to sharpen on nothing but full speed. BTW one nice thing about going overkill on a 3-phase motor size is that the torque rating is measured at full RPM; fan-cooled TEFC and open vent motors drop off to around half torque at 10% speed because of overheating.
I got in touch with Ken and ordered some CBN emulsions and linen belts. I also have some 150 Cubitrons, 80 Cubitrons IIs, and 400 Deerfos coming. I just need to get some beater practice knives, and that will keep me busy until I find a pyroceram platen.
Ken, the way you speak of Tormek piques my interest. I'm going to take another look at the system, just to see how it's evolved over the last few years. And how did you get a motorless Kally? If it were readily available, I might have started with a 1SM skeleton and added my own motor and VFD. One reason I got the Viel was that I could add my own motor, but it has a larger drive wheel than the Kally.
Mark, I'm surprised at how slow you're talking about, and it makes a lot of sense. I set my VFD at 10/100 and counted about 90 rpm, which is still around 140 SFPM. It's hard to consistently dial a slower rate below that without going to zero. I'm going to play with the MIN/MAX trimpot adjustments to see if I can get more usable range on the low end. Full speed is 2710 SFPM, scary fast! I can't imagine learning to sharpen on nothing but full speed. BTW one nice thing about going overkill on a 3-phase motor size is that the torque rating is measured at full RPM; fan-cooled TEFC and open vent motors drop off to around half torque at 10% speed because of overheating.
I got in touch with Ken and ordered some CBN emulsions and linen belts. I also have some 150 Cubitrons, 80 Cubitrons IIs, and 400 Deerfos coming. I just need to get some beater practice knives, and that will keep me busy until I find a pyroceram platen.