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TI says:

"LEAD HARDENING IS THE ABSOLUTE BEST METHOD FOR THE HARDENING OF RAZORS AS THE STEEL IS HEATED ABRUPTLY (WHEN PLUNGED INTO THE BOILING LEAD) RIGHT TO THE CORRECT TEMPERATURE! THUS...

I just was wondering whether his "heat treating" is necessarily hardening.

TI says they "lead harden" at 800 C then anneal at 300C.

My point was that it's not heating the steel. It's hardening it. In the video you can see an earlier heating step where the steel gets real hot. Then it goes into the lead.

That's too low a temperature. Notice they heat it to 1300. Molton lead is only 850. I think they leave it at that lower temperature to change state slowly and harden.

I haven't reaaad it, but this lead isn't used for cooling. I think it's used for tempering. Based on what you say, the video seems to insert the lead step between the heating and cooling.

How about your first born?

YOu could kill two birds with one stone by getting the SRP razor.

My experience as well, but I have to limit it to the premium TIs (what they call silver steel), and I, too, always thought it had to do with the way they hardened the razors.

My guess is it's a...

Thanks Nenad. I never saw that before. As rough as my German is now, I can tell you're right.:o

The reason I thought it wouldn't be done is because it's quite toxic and bad for the...

I don't think that's right. If you have some information that uses Dovo lead hardening, please identify it.

The blade is tempered or hardened by putting it in molten lead, which seems to be the ideal way to harder. TI is the only one that does it because it's illegal in most countries, including France...

I don't know if these designations mean anything. I do know that Eagle was a brand they created for one particular vendor. From my experience, the premium razors seem to be the same.

I...