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You should not use diamond pastes on felt wheels, only diamond solutions in alcohol. See Vadim's video https://youtu.be/-HBpsQn7frY

Good point!  Anyone know of a source for diamond sprays in alcohol emulsion?  All of the sprays I see are water based.

Bump! I got my felt wheels and now I am on a quest to find some diamonds-in-alcohol. I see some in Australia and not much in the US.

A question for admins:

Have you considered adding a support for the Tapatalk? The SMF is supported: https://www.tapatalk.com/download_SimpleMachines
It would be great to have the Tormek forums on the mobile.

Thank you!

@RichColvin! Just a person I need right now. A quick question for you: The VF constant is slightly off in the TormekCalc. I believe it is set for Vadim's VFB. I measured the distance from the center of horizontal support arm to the top of the unit is 10.14mm

4.14mm from the hole edge to the top and 12mm diameter of the hole.
Is that correct? It was not the best measurement

In the Calc the constant VF for the Colvin Tools is set to 53.80 from my measurements is comes to 51.14mm
I need to re-measure everything to be sure.

Let's do a math check. I need this distance:


In the Calc we have a HH of 41.0 (F17) and VF 56.0 (F20) the difference is 15.0mm.
I measured that value for the Colvin Tools as 10.14mm, so the VF for the Machine should be 56.0 - (15-10.14) = 51.14mm

That's a nice idea! More I look at this, more I want to figure out the 3D modeling/printing.

I got it. I was thinking about this wrong way. The angle is used to set the USB height. The knife jig have nothing to do with it.

Clever.

Arriving Wednesday
BOSCH 4-in-1 Digital Angle Finder GAM 220 MF

<3 the rubber band jig. That's clever!

Please pardon me if it's a stupid question - is the change in a protrusion length of a jig+blade changes the edge angle?

I will try that. The trouble I see with it - there is a subjective part in the measurement. That shortest distance is an estimation.

I did a similar repair not so long ago. Additionally, ran a diamond plate in the SE-77 over the stone surface. I didn't go slow with TT-50, so it was bit rough.
I did Grit 80, followed by 400, 1000 and 2000. The result was pretty much the same as I remember it was out of the box.

This one?

I have no idea how to figure out the tangent to a stone surface.

That sensor sure sounds like a complex way to solve a simple problem 

Perhaps. That height measurement feels bit clumsy. There is no fixed point to measure against. I would gladly pay up for a reliable, fast and easy way to know the support height.

Thank you. Let me re-measure the FVB offset. I tried the 20, but it seems to ignore the value bellow minimum of 24.4. Let's see if @JVH notice this post.
Speaking of direct measurements, it got me thinking yesterday (at 2am...) https://electronoobs.com/eng_arduino_tut72.php

Would it be cool to put together an IR distance sensor, Arduino, some LCD screen and 3D print a mount that goes here:


It sounds simple, but I hope there is a simpler solution for the contactless distance sensor for the short distances. Something pre-made and battery-powered.

Hi there!

Amazing work with the Calc! I just started using it and I have some newbie questions.

• I just did a first knife with it and the calculation was off by a bit. Here is the calculation:
  I have two Tormeks, Machine 6 is one with Front Vertical from Colvin. Target angle was 15dps, protrusion: 144mm.
  SG-250 support height was 172.19, SJ-250 on Frontal was 97.70. And that was off - I had to raise the support ~2 rotations to match the angle, according to sharpie. I wonder if something in my calculations is visibly off.
• I wonder if it good idea to "split" the Jig Projection Length into protrusion from tip of KJ-45 to the edge of the knife like this:
  
  The length of the KJ jig is fixed, so it would be much easier to measure only the knife sitting depth.
  If I am guessing right, the H1 on Jigs page is what I need:
  
  But that one is protected, so I wonder if I am mistaken.

Thank you.

Yup. Makes sense. The only thing that matters is a total length of a knife in a jig. I wonder why everyone work so hard to measure the whole thing. Live and learn.

Nice. Yes, I can buy, but it's not too much fun and a whole bunch of euros But it's quite close to what I had in mind. What I would change is "press" the KJ-45 into the block, so it won't move and it doesn't hang in the air.

Another idea: I can hire someone to model it for me! EUR75/piece... Nice...