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I suspect your blades are harder than a woodpecker's lips. (Who came up with that? I Love it!) 62+ is OK for AEB-L, but needs to be treated with respect. :-)

Thanks Ed. Your advice is always gold. Treating a customer with special pricing may feel necessary or even warm and fuzzy at the moment, - but it works out to a slap in the face to all those who respected your price and your worth. Rob!

So, back when I was getting started in the supply business - pretty clueless like the customers you describe above - I called Crucible - the old Crucible. The rep on the other end was Bruce Davita. My question about pricing was naive - probably as offensive as Laurence's guy with six blades...

Just as an aside, while storing in plastic may not be a problem, quenching in plastic definitely can be. It only takes a slight touch for a hot blade to go right through the pail and... well, you can visualize. :-( Rob!

I'm not going to take a position about how good or bad the do-it-yourself products are, because I have no experience with the current offerings. If you believe that perceptions are important, I can say that our customers are very fussy about who processed wood that we sell as stabilized. I...

Sorry - been away visiting the new granddaughter. Yes, we cryo all stainless. Rob!

The EvenHeat KH18 120V is almost as fast as the 220V model to get to the 1500F range. It's true that stainless takes considerably longer, but it still works just fine. If all you have is 120V, these kilns will do the job for you. If you need faster speeds, the new 220V KO models are way more...

I just did dozens of these - 6" to 8" long AEB-L x1/8 thick - Plate quenched from 1950F. They were ground to about an .015 edge - some with serrations. Very happy with the results. No noticeable warping. Post HT grind is awesome - but if it discolours, it got too hot.

I agree with you. Presuming you used at least dry ice for cryo, that HT should have left you with 61-62. Sounds like your blocks may be about right.

If all three are out consistently, I'd guess the machine needs some tweaking. Yes, by all means get a high quality test block - but you don't need a set. What do you do that is more than three points off 60?

You are fine as long as the test block is in the same general hardness range as your work piece. Stainless or carbon wouldn't make any difference. Actually, I'm not sure they even make stainless test blocks. Anything high alloy is liable to have some honkin' hard primary carbides (maybe...

So, out of a few thousand a year we get maybe a couple will stick. It happens. Hints to help. Stop peeking. A well sealed envelope will shrink every time you let the cold air in. Do some of your envelopes look like shrink wrap? Second is something in the envelope. a bit of paper helps...

Happens to all of us ONCE, but you seem to have a knack for it. :34:When buffing, I use a a wood support. I've seen guys make 'em look like fine furniture, but mine is just a piece of MDF board about 1 1/2 wide and 10" or so long (depends on blade size). I drill a couple holes to match the...

Sounds very cool as a decorative item. 1/4" thick and possibly some sort of nickel bearing alloy - and somewhat hard, it's going to be a bear to eventually get into knife size pieces. New steel might be cheaper when you figure in time and materials, but a picture of the big old blade along...

However, there is definitely the best steel available for the task you have in mind. That's what Boss tasked us to define in this subforum.

I made about 2000 knives in an 8 x 10 room in the basement. My shop is now something like 1200 sq ft - and I haven't finished a knife in it yet. You guys have probably heard this before. It's not how big it is - it's what you do with it that counts. :3:

Never say never. :biggrin: I see on restarting the upgraded Large Hadron Collider, scientists expect to observe rainbow gravity - parallel dimensions and invalidate the big bang theory. Of course, all that could explain a great deal of the abnormalities we find in heat treat operations...

When your oven arrives, you may find there is more to a good heat treat than "throw something in the oven". Just sayin..... Rob!

Ouch! :(

Thanks for the article Scott. Always interesting to hear a point of view that does not conform to conventional wisdom. While I accept their observation that the benefits of cryo are unclear, I also question the hardness findings. As Boss pointed out, many of us on this forum have done...