A Particular Belt That Works Better on D2?

[redsquid2]

I am super excited to be working with D2. I intend to send these blades to Peters' and I think the combination of D2 with Peters heat treat will be awesome.

I do most of the grinding before heat treat and am using annealed Crucible D2 from Alpha. However, it just seems like slow going on the bevels. I had a 977F Regalloy belt that was working good but that was my last one. My other belts are Deerfos ceramic.

I only have a 2X42 grinder right now, so my belt options might be limited and also I would rather not apply heavy pressure. they say some belts work better with heavy pressure, but I feel more comfortable using less pressure.

Any recommendations?

Thank you,
Andy/redsquid2

 

[Cushing H.]

I think in general any ceramic works better when grinding metal than, say, any AO belt. Have you tried the deerfos yet? I personally like the blaze belts, but im not sure if they are available in 2x42.

The pressure thing comes with experience and confidence. Just give that issue time...

 

[redsquid2]

I think in general any ceramic works better when grinding metal than, say, any AO belt. Have you tried the deerfos yet? I personally like the blaze belts, but im not sure if they are available in 2x42.

The pressure thing comes with experience and confidence. Just give that issue time...

Yeah I am using the Deerfos belt right now. It seems slow, but maybe it needs heavier pressure. Looking at the belts I have on hand, they are mostly Deerfos and a couple of Bora 7. I noticed a Blaze belt on Tru-Grit's web site, so maybe I will try that.

 

[Troop]

Can't go wrong with the Blazes. Expensive, but worth it. Especially if you do a lot of hard grinding.

 

[redsquid2]

As a side note, I love ordering abrasives and I feel excited when they arrive, like it's Christmas morning. Tonight I ordered some VSM 36 grit, some Klingspore 80 grit, and some Blaze 120 grit.

 

[eric brinkerhoff]

I've been having an astoundingly good experience with Red Label Abrasives flexible ceramic belts!

 

[eric brinkerhoff]

Blaze 120's are the bees knees! If only one belt existed in the whole world, I hope it's a Blaze 120

 

[Stacy E. Apelt - Bladesmith]

Ceramics require high speed and heavy pressure. If you grind on one like it was an AO or Zirc belt it will just glaze over and stop cutting. A Kool-mist system works great with ceramic belts.

 

[Scaniaman]

Deerfos Bora-7 is the only belt I use. It performs extremely well. I grind everything post HT.

 

[12345678910]

Ask Nathan the Machinist if you can use his HT recepie at Peters.

 

[redsquid2]

Ask Nathan the Machinist if you can use his HT recepie at Peters.

Can it really be better? I am skeptical because Peters’ heat treated all those gazillions of knives in D2 for Queen Cutlery

 

[redsquid2]

I have no idea how fast

Ceramics require high speed and heavy pressure. If you grind on one like it was an AO or Zirc belt it will just glaze over and stop cutting. A Kool-mist system works great with ceramic belts.

my grinder is 2 x 42 with an external motor. The pulley on the motor looks like about 2” and the one in the grinder looks like 4”. Can you tell me if it is fast enough based on this information?

Thanks

 

[Stacy E. Apelt - Bladesmith]

Your pullet ratio is .5. For those pulleys use this formula:
For the RPM of the drive wheel - motor RPM/2 . Multiply that number times drive wheel size in inches times 3.14 divided by 12= SF/M

Lets say the motor runs at 1750RPM and the drive wheel is 4". The SF/M will be 916 feet per minute. That is too slow for a ceramic belt. They work best at 3500-4500SF/M.

 

[redsquid2]

Your pullet ratio is .5. For those pulleys use this formula:
For the RPM of the drive wheel - motor RPM/2 . Multiply that number times drive wheel size in inches times 3.14 divided by 12= SF/M

Lets say the motor runs at 1750RPM and the drive wheel is 4". The SF/M will be 916 feet per minute. That is too slow for a ceramic belt. They work best at 3500-4500SF/M.

Thanks for the information. I struggled to understand the formula, but I think I get it now.. The motor runs at 3485 RPM and it already has a step pulley on it, so if I move the drive belt over to a 4" pulley wheel, that gives me a pulley ratio of 1:1. And...((3485 RPM X 4") X 3.14) / 12 = 3624 SF/M., if I understand the formula. So things aren't as bad as I thought, because the desired grinder speed is within reach.

 

[Natlek]

Thanks for the information. I struggled to understand the formula, but I think I get it now.. The motor runs at 3485 RPM and it already has a step pulley on it, so if I move the drive belt over to a 4" pulley wheel, that gives me a pulley ratio of 1:1. And...((3485 RPM X 4") X 3.14) / 12 = 3624 SF/M., if I understand the formula. So things aren't as bad as I thought, because the desired grinder speed is within reach.

use this..........................

Pulley Calculator. RPM, Belt Length, Belt-Surface Speed, Animated Diagrams - Metric

Visually Calculate Pulley Size, RPM, Belt Length and Speed - Animated Scaled Diagrams - Metric

www.blocklayer.com

 

[redsquid2]