Topics

Hello,

I started grinding again after a long break.

I (again) noticed a "large" sideways imbalance. It's actually always been there, but now it "bothers" me more. In the Tormek manual page 164 it says +/- 0.5mm (total 1.0mm). The stone was not used very often and was pulled off two or three times (diameter approx. 246mm).

I also looked at Beaker's link in the topic "There is a regulation for mounting the SJ-250" and tried it.
I tilted the machine on the side of the leather wheel and put the grinding wheel horizontally on the "standing" shaft and fixed it. I also loosened the stone several times, twisted it a bit and tightened it again. The result has not changed significantly.

Now I'm not sure if this is an operator error (clamping error), inaccuracy from the stone, or a bent shaft.

I lightly "polished" the stone with the SP650 on the receiving surface, also thoroughly cleaned the nut, washer and shaft!

Experiment 1: I switched on the machine, put a permanent marker on the case and slowly approached the stone. This marked the "biggest" imbalance. I then switched off the machine, loosened the stone, twisted it a few degrees and tightened it. Repeat the test with a different colored permanent marker. I repeated this process 5 times on the inside and outside. The result was that the largest "imbalance" was always marked in the same quarter of the disc. So, in my opinion, I can rule out a "bent" shaft. It is also interesting that the largest deflection is offset from the inside to the outside by 180°.

Experiment 2: I looked for the points with the two largest and the smallest distance between the grinding wheel (inside) and the housing and measured them 4 times. The stone was re-clamped between each measurement.

Results:
1: 6.2mm / 6.3mm / 5.2mm = diff. 1.1mm
2: 6.0mm / 6.1mm / 5.4mm = diff. 0.7mm
3: 6.4mm / 6.5mm / 5.2mm = diff. 1.3mm
4: 6.1mm / 6.2mm / 5.5mm = diff. 0.7mm
Two results are OK, two less.

Maybe there is a T8 owner in the forum who lives near Innsbruck (Tyrol). I'm also in Salzburg and Wels every now and then for work. It would be cool if someone there was willing to swap the discs for a quick test and see if it made a difference.

But maybe I'm just being too picky?

Best regards
Thomas

Hi there,

while watching several Tormek grinding videos on YouTube, I came up with the following brain teaser.
Maybe this topic has already been discussed, then sorry for the repetition and I will delete the post immediately!

No idea if this is practical, but my idea would be to set the grinding angle only via the "Jig projection length X".

A prerequisite for this "variant" would be grinding wheels with the same diameter (e.g. 250mm Diamond Wheel).

And now the idea: the jig projection length X, the height of the vertical USB height and frontal vertical base height for a "medium" grinding angle (e.g. 15°) are set once with the software and checked. The settings on the Tormek should no longer be changed.

The grinding angle is then only set via the "Jig projection length X". You could build "stop gauges" for a wide variety of grinding angles and would be very fast and the angles possibly well reproducible.

No idea if this is feasible and useful?

Hopefully the google translation makes sense!

Kind regards
Thomas

Hello,
my name is Thomas and I am from Austria / Tyrol. I have been following your forum for some time and am fascinated by the perfectionism of some people here.
I also think it's awesome that you reveal your know-how and make no secret of it! Also ingenious and thankful that the Excel table for the height settings was just made so available.

After long back and forth, I have decided for a T8 and after some delivery delay, it was delivered to me by DHL yesterday.
The slight damage to the box did not bother me much. But when I wanted to lift the machine out of the original packaging, I discovered three small broken plastic piece between machine and Styrofoam (Styrofoam was also broken). Upon closer inspection of the inside of the machine (with the lamp) I discovered the breakage. It will be with a screw of the engine cover.   
I reported it to the company I ordered it from. She said that I should make a claim with DHL.
The damage report was made at DHL. I'm curious what comes out of it.

Did you ever see something like that? Must probably point to a greater impact load or what do you think?

Thank you very much
Thomas

PS. I hope the Google Translate makes sense