Recent content by millejn3

Kevin, Thank you very much for your help. It's VERY MUCH appreciated. My quench tank is very close to my oven. Quench happens in 3 to 5 sec. after opening the oven door. I have extended the soak time to 15 min. In AAA with no change in hardness. Always 50C. Scale is removed before testing with...

Thanks for the help everyone. I should have stated this heat treat will be on stock removal blades and not forged blades. Do I still need to do the thermocycling for this? And I was not aware that the P50 should be room temp. So far I'm only testing on small 3/4 ×3/4 samples. And with not much...

Hello all, I'm in need of some advice on 5160. I'm ready to pull my hair out! I've been making knives for 15 yrs. Always stainless. I have decided to move to carbon and start with 5160. Not having much luck. Best a can get is 50C. Here's my process: 1525 soak for 10 min. P50 @ 120 degree quench...

:35::35::35: Now thats customer service!!!! It doesnt get any better than that folks!!!! :35::35::35:

Thanks for the help Tracy.... That's kind of what I figured. Its a long ways from China and I sure it wasn't in its own little padded room during that trip. Beings that all 3 test blocks are 1.5 to 2 lower than what is stamped on the block I pretty confident it just needs a little tweeking. If...

I have a 61.3 block a 46.7 block and a 24.5 block. The machine is consistently 1.5 to 2 lower on all 3 blocks. My knives (the 5 that I have done) all measure 59.5 to 60.5. My only concern is than if the test blocks are correct, that would put my 5 knives 1.5 to 2 higher.

I'm thinking I will run a test tomorrow. I have a small piece of CM154 3" long 2" wide 5/32 thick that I will HT and freeze then check the hardness both before and after normalizing.

Thanks for the help Lyon!!!

I just got this machine about 3 days ago. Until then I was just going by the normal recommended receipts found for CM154. Ramp to 1400 for 10 minutes - ramp to 1950 for 35 minute soak time - Then plate quench while using air between the plates - sub zero freeze - and then 2 tempers at 400 for 2...

That's my thoughts as well but I wanted to make sure,,,, Also was wondering how much faith I can put in the testing blocks that came with my import Rockwell Tester. The tester is consistently 1.5 to 2 points lower on all 3 of the C scale blocks. My thoughts are to order a quality set of USA...

If I use carbon steel calibration blocks to setup my Rockwell tester, will there be any type of variation when testing stainless steel ?

I ordered one last night from Grizzly.. $829.00 shipped

Thanks for the info Ken...

Ok everyone, I'm going to pull the trigger on a hardness tester but wanted to touch bases with everyone to get a few opinions from the experts. I posted many months ago and a few people directed me towards to Enco import machine for $966.00. It sounds as if several people have this machine and...

That's way cool!! I would keep that piece and it would be on my wall!