Trizact question

Hengelo_77

Hengelo_77

Basic Member
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Mar 2, 2006
Messages
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I am using my first batch of Trizact belts.
Here are pictures of a A300 belt.
It doesn't realy cut anymore, but it looks like there is prenty of grit on the belt.
As I understand it the dull gritt should come off and expose new sharp grit.
Is that right?
How can I accomplish that?

IMG_20161220_161042_zpsjbcg4lnw.jpg

IMG_20161220_161053_zpsucsogetg.jpg
 
Wire brush. I have a large 2" wide wire brush with fine bristles. The trick is to brush it even so the surface of the belt stays flat.
 
I assume you mean a handbrush?
Let the grinder run and gently push the brush hairs in to the belt?

Is it steelbrush of brassbrush?
 
I've tried the various ad hoc methods like wire brush, or worn ceramic belt glued to a stick, etc. They all work but not as well as this:

GXQ8p3.jpg

5pMyHX.jpg


Obviously not on the felt belt on my grinder in the second picture but I was just holding it up for example. Very easy to keep a nice straight surface with a diamond dresser like this. I got mine on Ebay for $7. Works on everything. Grinding wheels, Trizacts, Cubitrons.
 
kuraki said:
I've tried the various ad hoc methods like wire brush, or worn ceramic belt glued to a stick, etc. They all work but not as well as this:

GXQ8p3.jpg

5pMyHX.jpg


Obviously not on the felt belt on my grinder in the second picture but I was just holding it up for example. Very easy to keep a nice straight surface with a diamond dresser like this. I got mine on Ebay for $7. Works on everything. Grinding wheels, Trizacts, Cubitrons.
Click to expand...

Sweet, just ordered one..
 
I take a block of wood, and lay an old 50 grit belt on top. Then use that to resurface the belt. Takes a few seconds
 
That's not how it works.

You're not fracturing the ceramic or aluminum oxide or whatever the cutting medium is. You're fracturing the bond that's holding it in place. If it was as you described diamond dressers wouldn't work on surface grinding wheels either, which is primarily what they're used for.
 
kuraki said:
That's not how it works.

You're not fracturing the ceramic or aluminum oxide or whatever the cutting medium is. You're fracturing the bond that's holding it in place. If it was as you described diamond dressers wouldn't work on surface grinding wheels either, which is primarily what they're used for.
Click to expand...

Ok , but can not you do the same with piece of iron or steel ? Just a little bit stronger pressure then normal ?
 
The wheel type doesn't seem to work. The belt stays dull and I don't see it looking different either.It doesn't change my ceramic belts.
Thanks for this.
Frank
 
Natlek said:
Ok , but can not you do the same with piece of iron or steel ? Just a little bit stronger pressure then normal ?
Click to expand...

To a small extent yes that occurs, but it will load the belt with steel, and pushing harder at that point will just create heat. You're asking if a belt gets loaded from grinding knife steel if grinding some more steel will fix it?

The diamond is harder than the abrasive and the bond, it doesn't continue to load the belt with more material.
 
Gators also like to loose their flatness, a quick hit with the 50grit on a board flattens the belt right up again like it was new.
 
These belts are not like normal belts that have a single layer of grit. These belts have little piles of grit that are glued togather. The surface of the grit will get dull and load up with metal. By dressing you basically ripping the to surface of the grit grains off exposing the fresh grit that is hiding under the dull grit.
 
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