Entrek Knives - How The Knives Are Made Part 1 - Blanking & Drilling

[bobmellon]

i don't get why you work on the knives after heat treat, you risk ruining the temper

[entrekknives]

@bobmellon The main reason I do my work after heat treat is so I don't have to deal with warped blades. Even flat steel will sometimes warp during heat treat. If it does I can surface grind it flat before I start the bevel grind. As long as you pay attention and don't let your belts get too dull hurting the temper is not a problem. I am not the only one that does it that way. For some of us it just works better this way. Ray

[bobmellon]

@entrekknives i know that you are definately keeping the blade under 400 degrees as a hole, but when you are grinding and shaping, you can even see this if you watch your video, is at the contact point the metal is being superheated, turning orange, therefore changing whatever temper existed,this probably does not happen as much whilst you are grinding the bevels, but it definately happens when shaping, and it still happens on a molecular level whilst grinding

[bobmellon]

@bobmellon i am not an expert on this subject, and i really respect your work, and i really respect the amount of experience you have, and i do not know for sure the changes that would occur from this concentrated superheating of the metal caused by grinding, i am not a metallurgist, but to me it seems that it would change the properties of that metal, the same reasoning follows with laser cutting, which can cause microchipping problems on factory edges

[entrekknives]

@bobmellon What you are seeing when I blank is the color change of the layout fluid not the overheating of the steel. the layout fluid changes at very low temp. If you were to look at the edge you would find it bright silver. No color change at all. I am very careful with this. The one test is this. Ask ANYONE that has or has used an Entrek USA knife about the heat treat. Or look on the forums. You will not find anybody that will say anything bad about the heat treat. Ray

[bobmellon]

@entrekknives i am not only referring to your video but any time that grinding is being done on a knife, if you watch closely, the steel directly contacting the belt gets superheated and then ripped off, watch your own video, when you are grinding on the 2x72 belt grinder shaping the blade

[JesusFuckingChrist84]

@bobmellon

Okay, so let's say he was ruining the temper, why is it that no one winds up returning the knives due to manufacturing defects? Simply because there weren't any. Trust the maker, what shows up on the video isn't necessarily what the eye would see.

I know plenty of makers that work with heat treated blanks, they produce some of the toughest knives I've seen, and I myself have worked heat treated metal, it isn't as risky as one might think. Have to keep sharp belts is all

[fartx211]

I find it odd that the heat treat here is done before shaping and edge grinding. Does it put a lot of wear on your grinding belts??

[entrekknives]

If you don't use good belts they wear out pretty fast. I use Norton Blaze belts and I can get 10 double edge knives out of one belt. I also use ceramic surface grinding wheels.

[Menuki]

I blame the Chinese knock-offs, while it is 440 it's rarely handled correctly, even if is 440c though most times it is not.

440 has been associated with the flea store dollar bin crap.

[heettreet]

i worked in a machine shop for over ten yrs , i can tell all you commenters ,, ray is the real deal

[xilix]

People need to start realizing that this treated 440c is nothing to scoff at. It's a shame that people have become pretentious enough to swear off a steel that, if treated correctly, is a great steel. Wake up people. These are great knives that will last you the rest of your life. And probably your kids lives as well.

[kaizoebara]

@xilix That's right. Böker uses it, too. They have been making knives since before anybody's great grand dad was born, so they know what steel makes a good knife.

[dublyooteeeff]

dude fix your drill press

[PintoBlades]

Man, thats a hell of a shop of tools you have! Very nice! Great knives.

[FabioCrow07770]

I Have the Javalina great blade

[entrekknives]

@MacheteMenacho I chose 440C because it is a proven steel that holds an edge a lot longer than 1095 and is more corrosion resistant than either 1095 (you can watch this stuff rust) or D2 which actually doesnt qualify as a stainless steel although it is tough to beat it for edgeholding its a little harder to get D2 as well.