Where to buy CBN abrasive belts for 2x72

DeadboxHero said:
Damn, China gave you a better quote, I got $250 per belt with a 10 pcs minimum.
Brutal.
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From China ...................... not that bad :D I wait price from Germany , today I will make another 2x42 grinder for VET grinding :mad:

1)CBN belts , 50mm*1020mm, grit 40#, --- 140.3 dollars per piece
2) CBN belts, 50mm*1020mm, grit 60#, ---113.7 dollars per piece.
3) CBN belts, 50mm*1020mm, grit 120#, ---95.1 dollars per piece
 
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https://benchmarkabrasives.com/collections/coated-abrasives-sanding-belts-2-x-72
 
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DeadboxHero said:
Diamond is not used for steel on power equipment. The reason is that diamond IS carbon and is soluble in the iron in the steel when used with enough pressure and heat.

Basically it detroys the abrasive faster and might not be ideal for the steel.

Some argue they are doing low speed grinding without getting high enough temperatures to cause problems.

However it's generally frowned upon to use diamond abrasives with power equipment. The diamond belts are for glass, ceramic and carbide.

Not designed for steel, not to mention the binder is too weak to hold the diamond on the belt for steel applications.

That's why CBN is so desirable but also why it was wayyyy to much money. They found a special way to bond the hard abrasive on a thin metal belt with a Kevlar backing.

But in the end, it's just too damn expensive.

Doesn't matter how good it is at that kind of cost $300-1200 plus depending on where you look PER BELT!

Just save the money and buy more ceramic belts.

In your case, if your using a 1x30 , a 2x72 is going to be a wayyyy more important upgrade then CBN or diamond belts

That's what's holding you back, and I understand why. The grinders are expensive.
But trust me, it's worth it.

Shawn
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If I remember this thread right a few people were looking for a way to finish high carbide steels and were interested in at least giving diamonds a try. At less than $20 it's worth a shot even if you have to pick up a harbor freight grinder. I'm far more interested in the ceramic trizacs. I haven't heard anyone say anything about them. I have a 2x72 to run them on.
 
The few people I've seen comment on the ceramic trizacts were not impressed with them and went back to the aluminum oxide versions. I've not personally tried them.
 
kuraki said:
The few people I've seen comment on the ceramic trizacts were not impressed with them and went back to the aluminum oxide versions. I've not personally tried them.
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I usually buy from pop but I want some cork belts so I want to get a order off to tru grit and will give a couple a try. I might get a couple of the diamond belts and use them like fancy shop role
 
kuraki said:
The few people I've seen comment on the ceramic trizacts were not impressed with them and went back to the aluminum oxide versions. I've not personally tried them.
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Agreed, the issue is that it's not on the flexible back jflex weight belt like the AO. It's a stiff belt. Also the abrasive is much harder too, it's a like armadillo armour, the tightly pack squares don't conform like the gator tread on the AO, doesn't finish as good, just rides on top and feels bumpy.

I'm not going to buy those anymore.
 
kuraki said:
The few people I've seen comment on the ceramic trizacts were not impressed with them and went back to the aluminum oxide versions. I've not personally tried them.
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I personally was impressed by the ceramic norax belts, compared to the standard ones, and have always meant to try the ceramic trizacts, but haven't yet. That being said, I don't particularly like the regular Trizacts, and they don't really have a spot in my grinding process, except occasionally for surface grinding.
 
DeadboxHero said:
Agreed, the issue is that it's not on the flexible back jflex weight belt like the AO. It's a stiff belt. Also the abrasive is much harder too, it's a like armadillo armour, the tightly pack squares don't conform like the gator tread on the AO, doesn't finish as good, just rides on top and feels bumpy.

I'm not going to buy those anymore.
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See, the stiffer backing would be a big boon for these belts to me, especially for surface grinding or finish grinding the way I do things.
 
javand said:
I personally was impressed by the ceramic norax belts, compared to the standard ones, and have always meant to try the ceramic trizacts, but haven't yet. That being said, I don't particularly like the regular Trizacts, and they don't really have a spot in my grinding process, except occasionally for surface grinding.
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I have almost no use for Trizacts. Once I use up the ones I have I won't be buying any more. Initially I thought they were the bees knees but as I got better at grinding I just think they're slow and their long life just means more time in front of the grinder. I'd rather throw away a $1.20 400 grit AO belt or 2 every knife than use a Trizact for 6 or 8.

What do you like about the Norax ceramics? Norax I'm actually quite a fan of, all the benefits of Trizact like finish but much faster cutting. They just don't work out for me economically as the AO ones were only lasting me for maybe 2 knives but cost more than even a Trizact.

When I finish grind I use high pressure and low speed. Which may be odd but works best for me (low speed for heat management and high pressure to maintain full contact geometry - not as high pressure as hogging with a 36 grit but definitely not "light" pressure). It glazes Trizacts over and requires constant dressing. But regular AO belts work well that way. Norax did for me as well.
 
I just picked up my spring supply of coarse grit belts from James Poplin - AKA Pop"s. I used to get a couple dozen of the expensive belts at $8-$9 each. With Pop's suggestion, I had started using the blue AZ-X (AO/Zirc mix X weight) belts at 36 and 60. These whiz through steel and only cost $2.60 and $2.25 a belt in 10+ quantities. They have a pretty good life. I use about 50% to 100% more belts than before at less than half the total cost. Because I change them more often, I am using a fresh belt more often ... a win-win.
 
I HATED the ceramic norax belts. Even ran as fast as my grinder would go (5600sfm) and with fairly heavy pressure, I found them to just glaze over and make a ton of heat. I haven't used my gator belts in ages, I find jflex belts a lot nicer to run the way I grind.
 
kuraki said:
I have almost no use for Trizacts. Once I use up the ones I have I won't be buying any more. Initially I thought they were the bees knees but as I got better at grinding I just think they're slow and their long life just means more time in front of the grinder. I'd rather throw away a $1.20 400 grit AO belt or 2 every knife than use a Trizact for 6 or 8.

What do you like about the Norax ceramics? Norax I'm actually quite a fan of, all the benefits of Trizact like finish but much faster cutting. They just don't work out for me economically as the AO ones were only lasting me for maybe 2 knives but cost more than even a Trizact.

When I finish grind I use high pressure and low speed. Which may be odd but works best for me (low speed for heat management and high pressure to maintain full contact geometry - not as high pressure as hogging with a 36 grit but definitely not "light" pressure). It glazes Trizacts over and requires constant dressing. But regular AO belts work well that way. Norax did for me as well.
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Well, to clarify, none of the structured abrasives have a spot in my blade grinding process, but I like the ceramic noraxes for getting certain belt finishes, they're nice for refining bolsters for example, and for surface grinding, they're much more effective at finer grits than the trizact are for me.

However, fwiw, I do not use scotchbrite belts, or j-flex belts for finish grinding. I like crisp sharp plunges, with very flat grinds, so I use stiff belts up to 400 grit, and then an 800 grit Awuko j-flex to finish plunges (just enough flex to get in and clean up scratches, but before that, i want as flat a riding belt as possible). I use one of each belt grit per knife, pretty easy to keep track of costs and efficiency that way.
 
How are you guys dealing with belt bump? Lately I have been using trizacs at full speed with light pressure and have been getting much better flats and surface but not good enough for a final machine surface. I have been using scotchbrite but also not happy but none are getting very worn. The scotchbrite with compound is ok but I would like better.
 
I don t understand why Germans ask me which µm grain size belts I want ? I ask for 60 and 200 grit belts ?? 60 is 251 µ and 200 is 91 µ . Im correct?
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Bump doesn't really upset my grinding on anything but the small wheels.
 
Joint on belts , that was worry me on Chinese belts ? My first one ceramic belts still grind good , but joint start to falling apart and I must toss that belt , or repair joint somehow if it is possible? I can t see how joint on German belt look ? Maybe is smart to buy this belts from Germany ,no matter that will be much more expensive .......... What do you think ?
 
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I was replying to skillgannon's question about belt bump from the taped joint.

I don't know about your question. I'm inclined to believe the German belt will be higher quality but whether it's worth the cost is the question.
 
Natlek said:
Joint on belts , that was worry me on Chinese belts ? My first one ceramic belts still grind good , but joint start to falling apart and I must toss that belt , or repair joint somehow if it is possible? I can t see how joint on German belt look ? Maybe is smart to buy this belts from Germany ,no matter that will be much more expensive .......... What do you think ?
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Not sure what grit yout ceramic belt is but if you think the joint is going, can it. I had a belt blow apart from catching a knife a week or 2 ago. Its not fun and will give you quite a scare. The belt that blew apart was a 600 gri SC belt so didnt do much damage.
Now if you use 36, 60, 120 ceramics like i do, blowing a belt will give you a nasty case of belt rash.


Also ido like trizacts for scratch pattern refinement, i find the 220/ 320/ 400 grit gator/ trizact works well for flat grinding as its a stiff belt with litte if any belt bump. I have a j flec ceramic 220 and it bumps pretty bad and gets transferred to the steel (not good) but they do cut super well 3M brand as well.
 
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