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I appreciate all the responses. I'm think I'm making this more complex than it needs to be so. After trying a few different setups today, I'm setting on a workflow that will likely replace my waterstones while in the shop for sharpening. 

Using the TTS-100 for both the SG-200 and honing wheel eliminates any guesswork in setting the USB distance.  I've rounded out my collection of projection jigs to get a repeatable projection for the SE-77 at 20, 25, 30, and 35 degrees.  Setup is quicker than using my Veritas jig and stones.

One area that I'm experimenting with is grinding a few of my chisels at 25 degrees with the stone set to coarse and a small secondary bevel at 30 with the stone set at fine.  My thought is that when it comes time to touch up, a few seconds at the fine stone setting with a quick touchup with the leather wheel and I'm back to work.  After 5 -7 times, I'll have to regrind the primary bevel.  I can also quick change the edge for different woods (softwoods vs hardwoods) and tasks if need be, as opposed to regrinding the entire bevel if I want to setup a chisel for a chopping session.

In a previous post: https://forum.tormek.com/index.php?topic=4216.0 I asked about using the TTS-100 to set a consistent distance from the USB to the grinding stone.  I created a prototype jig that sets chisel projection at 43mm @ 25 degrees and 37mm @ 30 degrees using the SE-77 when measured from the top portion of the jig to the end of the chisel. The AngleMaster WM-200 was used to check the grinding angle. The projection jig sits against the bottom clamping plate of the SE-77.  Based on my measurements, the bottom plate is inset 2mm from the top plate.   

Looking on the forums, there is a tremendous amount of information about calculating the proper projection and USB height for knife sharpening, less so for chisel and planes, and no data applicable to the T-4. Rather than recreate the wheel—no pun intended—I'd like to either extend the TormekCalc spreadsheet to cover the SG-200 and leather wheel for the T-4 or if there is enough interest, set up a online calculator that everyone can use.

I know that Jan has a program he uses to check projection and angles that is tuned to the SE-76.  Does anyone know what formula(s) is used for that calculation and what are the relative input values that I should measure on the SE-77 jig and T-4?

Hello,

I have a T-4 and I am looking to create a repeatable process for grinding and honing my plane and chisel blades. Coming over from waterstones, I'm used to grinding a primary bevel and honing a secondary bevel. The Tormek way advocates primary bevels only.

I've read a number of posts describing the use of the TTS-100 to produce a 25 degree angle on chisels and plane blades.   As I understand it, the process goes something like this the first time:

• Set distance of UG to wheel using slot B of the TTS-100.  This sets a constant distance that can be repeated every time and replicates the spacer block method described on page 41 of edition 10.5 of the manual.
  
• Place the chisel or plane blade in the SE-77 jig. At this point the blade protrusion is still unknown.
• Using the AngleMaster WM-200, set to desired grinding angle and adjust protrusion of the chisel or plane blade. Mark the distance and the angle on a sticker inside of one of the slots in the TTS-100. Based on forum posts, this is fairly accurate for setting 25 and 30 degree angles.

For resharpening, set the protrusion of the tool to the measured mark in step 3 for the desired angle and use hole B to set the distance to the stone. I'm less concerned with hitting an exact angle as opposed to ensuring repeatability. 

One thing that is unclear to me is when resharpening and not changing the bevel angle, do I regrade the stone to 1000, touch up the bevel and hone on the leather wheel or must I regrind at 250, move to 1000 and then hone?  With waterstones, I can usually go 7-8 resharpenings, before regrinding the primary bevel.

Thanks,

Joel