Thread: What is your opinion on all the dorko blades

If it were me I would first have a Rockwell hardness test performed. The reason why is that the appearance suggests that they have just been stamped out and not properly hardened & tempered and therefore to soft to perform a final grinding or, second, they have been hardened but not tempered in which case the hardness would be very high ( to high) or , third, any of the aforementioned but they have been thru a burning of the building they were stored in and therefore of a completely unknown state.

They also look like the final grinding has not been done.
I am basing this on prior experience with some Herder razor blanks.
If they were mine I would first anneal them then reharden & temper the blanks. Both would involve some effort.

Just my 2¢

Originally Posted by randydance062449

If it were me I would first have a Rockwell hardness test performed. The reason why is that the appearance suggests that they have just been stamped out and not properly hardened & tempered and therefore to soft to perform a final grinding or, second, they have been hardened but not tempered in which case the hardness would be very high ( to high) or , third, any of the aforementioned but they have been thru a burning of the building they were stored in and therefore of a completely unknown state.

They also look like the final grinding has not been done.
I am basing this on prior experience with some Herder razor blanks.
If they were mine I would first anneal them then reharden & temper the blanks. Both would involve some effort.

Just my 2¢

Thanks fo your comments
I have a PM for PapaBull Robert williams and asking his opinion on who to send them to.
Have also emailed the seller and asking him about them.

You might also send a PM to SRP member Mike Blue http://straightrazorpalace.com/members/mike-blue.html

He has experience with the Herder blanks.

update from the seller:

Yes, these blanks are ready for further treatment. Their tempering 58-59 HRC by Rockwell scale.

From Robert Williams:
Those blanks are heat treated and tempered and look like they may be fully finished. They should never be heated above 200 degrees again by polishing or anything else.
Stingray

Excellent! Now you know, and don't have to guess.

I thought they looked like they still need final grinding, but I dunno.

I'm basing that off of the somewhat uneven grind they show, the sort of rough look of the grinds up towards the spine, and, also, I have never seen a finished Dorko with a fauxframeback type grind that those have.

But I dunno...

Originally Posted by holli4pirating

I thought they looked like they still need final grinding, but I dunno.

I'm basing that off of the somewhat uneven grind they show, the sort of rough look of the grinds up towards the spine, and, also, I have never seen a finished Dorko with a fauxframeback type grind that those have.

But I dunno...

I agree. It appears that they need final grinding and polishing.

Just my 2¢

Here is the report from Mike Blue:

Hi Ron,

The blades all tested as hard. Between Rc 57 and 59. I marked them all. A couple have softer tangs and the rest are the same hardness all the way through. I don't have any explanation for that. But the tangs don't have to be hardened either.

One blade lost just a bit of the point. They are flat and I thought I'd see if I could test that steel to see if there was a differential. It's hard and the steel across the fracture is very fine grained stuff. A little work and you'll have a slightly rounded point. One other blade was tested in the same spot and did not fracture at Rc 58. So the blade hardness is the same pretty much throughout the blade.

You can see the Rockwell deformation dimples. Most of them except the above two blades are in front of the D up on the tang.

I'll put them in the mail on Monday.

Mike


Stingray