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Started by RichColvin, April 11, 2022, 02:52:54 AM
Quote from: RichColvin on April 11, 2022, 02:52:54 AM...But, I would prefer to have a formal to calculate this. So this is a request of my geeky friends to help me find such a formula. Anyone?
Quote from: Ken S on April 11, 2022, 06:16:03 AMRich,Why do you need a formula? I started using my TTS-100 around 2010 to set my chisels and plane blades. I used one of the two holes in the TTS-100 to set the Distance from the grinding wheel to the support bar. The two metal wheels auto correct for wheel diameter changes. (This is also why the same settings work for the T4 and T8.)I placed a blank piece of labelmaker tape in one of the three Projection slots. Use the Anglemaster to set the bevel angle by adjusting the Projection, not the microadjust. This would normally be clumsier than using the microadjust; however, you only have to do it once for each angle setting. The Anglemaster works fine for the large flat plane with chisels and plane blades.My piece of label tape tape from 2010 is still going strong. As a side benefit, it does not interfere with sharpening turning tools.Ken
Quote from: RichColvin on April 11, 2022, 02:52:54 AMI've been re-sharpening my chisels a lot lately. I think there must be a way to use the TTS-100 Turning Tool Setter to make the sharpening process faster. Using the diagrams below, I'd like to come up with a formula for the projection based on the desired angle.There are 3 key measurements: * When using the B hole on the TTS-100, I measured that the USB is set to be 17 mm away from the grindstone. * The distance from the USB to the SE-77 where the top of the chisel is held is 25 mm. * The width of the SE-77 is 35 mm.The values I measured for P (projection) are: 20° bevel angle, P = 49 mm 25° bevel angle, P = 44 mm 30° bevel angle, P = 38 mmBut, I would prefer to have a formal to calculate this. So this is a request of my geeky friends to help me find such a formula. Anyone?
Quote from: Dutchman on April 11, 2022, 10:22:21 AMRich,In my document "More math ..." (see link in my 'signature' to find it) I solved this problem for the "cbwx34-fix", but basically the same problem.
Quote from: RichColvin on April 20, 2022, 03:38:30 AMJan,Thank you!Rich
Quote from: cbwx34 on April 26, 2022, 12:19:50 AMI've not dealt with chisels much, and they're pretty easy to set with the AngleMaster, (that nice flat side... aaahhhhh) but I figured out, based on some of the TormekCalc info, that you can use the Calcapp app (and I'm guessing most of the other apps) to set the USB height.You set the Jig Diameter to 49.2 and add 30.1 to the measured Projection Distance.Glad this came up... learn something new every day! p.s. Hats off to jvh! And I might add, if you can, send jvh a donation and get his Spreadsheet. Totally worth it, even if you only use it as a reference to some of the other calculators, or for example, a way to document your sharpening.
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