Hello! I have a worn Blackstone at home, it's now around 200 mm. My thought was now to upgrade this to a T4. Is this basically possible? The 200 discs are only 40 mm wide, the 250 discs are 50 mm wide. Can I fit the T4 with the shaft for the T8? Then I wouldn't have to throw away this good disc prematurely. Thank you!
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#2
General Tormek Questions / Surface-problem with DE-250 Diamondwheel
October 12, 2023, 10:40:35 PM
Hello dear members!
I have the following problem with my DE-250.
In April of this year I bought these for my inherited T2000 to sharpen normal kitchen knives and scissors. I sharpen around 15 to 20 knives or scissors a month.
I use the included anti-corrosion protection and dry the disc after grinding.
Since in 90% of cases I just refresh the existing bevel, I also grind everything on the DE-250. If I really need to remove a little more, I'll take the time and simply grind longer, but not with higher contact pressure.
With the disk in question from April I had the problem that the diamond coating had come off in one place, but not around the entire disk. At least this area became bright and also had a different resistance when sanding. I contacted my dealer, who replaced the window after complaining.
The new disc has been in operation since August 2023, and during this time I have sharpened perhaps 50 pieces using the procedure described above.
Now I notice that the coating on the edges is peeling off again and they are no longer usable, which is very annoying with scissors. The whole area also seems a bit thinned out to me.
If it really is the contact pressure, I am more than disappointed with the quality. The layer must be really very thin and delicate.
My background is in optics. Here we grind, among other things, mineral glasses on water-cooled diamond discs. In my 20 years of professional experience, I have never had the problem of the surface of such a pane peeling off.
Happy grinding everyone!
Stephanie
P.S. I am from bavaria/germany and I used the google translater to create this text. Maybe there are some mistakes in it, sorry!
I have the following problem with my DE-250.
In April of this year I bought these for my inherited T2000 to sharpen normal kitchen knives and scissors. I sharpen around 15 to 20 knives or scissors a month.
I use the included anti-corrosion protection and dry the disc after grinding.
Since in 90% of cases I just refresh the existing bevel, I also grind everything on the DE-250. If I really need to remove a little more, I'll take the time and simply grind longer, but not with higher contact pressure.
With the disk in question from April I had the problem that the diamond coating had come off in one place, but not around the entire disk. At least this area became bright and also had a different resistance when sanding. I contacted my dealer, who replaced the window after complaining.
The new disc has been in operation since August 2023, and during this time I have sharpened perhaps 50 pieces using the procedure described above.
Now I notice that the coating on the edges is peeling off again and they are no longer usable, which is very annoying with scissors. The whole area also seems a bit thinned out to me.
If it really is the contact pressure, I am more than disappointed with the quality. The layer must be really very thin and delicate.
My background is in optics. Here we grind, among other things, mineral glasses on water-cooled diamond discs. In my 20 years of professional experience, I have never had the problem of the surface of such a pane peeling off.
Happy grinding everyone!
Stephanie
P.S. I am from bavaria/germany and I used the google translater to create this text. Maybe there are some mistakes in it, sorry!
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