Useful and well constructed. Good job

@backyardfoundry

2 жыл бұрын

Thanks!

Nicely done :)

it just occurred to me that the fabled metal of Atlantis was tempered brass. normally bronze is better but i think hardening brass might be how we got the idea for forging

@backyardfoundry

7 ай бұрын

I am not aware of this, I will have to look into it. Thanks for sharing!

How do I get the nice even hammer hardened edge on my bronze swords tho? It's often a hard thin waffer on originals. With a perfect line between unhammered and hammered bronze.

@backyardfoundry

2 жыл бұрын

You can always grind away the dimpling after you have done the work hardening. The key is to maintain a low temp when doing it. So if you have a belt sander (which would likely be best to give the perfect line you are looking for) work slow and cool the metal often.

@imperatorcaesardivifiliusa3805

2 жыл бұрын

@@backyardfoundry That doesn't seem right tho. I've seen in originals the wafer edge. That has to have been peaned out not sanded out.

@tobhomott

2 жыл бұрын

@@imperatorcaesardivifiliusa3805 Agreed. Perhaps historically something shaped more like a cross-peen hammer was used to hammer out the hardened edges. Neill Burridge knows the secret, but I think he only gives it up to attendees of his bronze casting workshops.

@imperatorcaesardivifiliusa3805

2 жыл бұрын

@@tobhomott Yeah. I believe a lot of bronze age reproduction Smiths have their own method for achieving it. But none are forthcoming in sharing it.

@th3m4n14c

2 жыл бұрын

@@tobhomott Sadly he does not as far as I know. Every now and then he rambles on the goodbook about how he is the only one who can reach this quality but he will never show anyone how to do it, because that would cost him business. (in his mind)

I'm pretty sure precipitation hardening is an other word for quench hardening. Rather, quenching precipitated the dissolved alloying elements to form martensite and other structures. I make knife blades from hardenable bronze. I forge the blades by hand, and temper them on the fire. It's important to note that on a lot of aluminum bronzes for exemple, the hardness doesn't really come from the quenching process (the bronze doesn't harden much after quench) but from the decomposition of the martensite, aka tempering / aging. However tempering aluminum bronze is still pretty unexplored, and even the latest research papers don't give very precise processes. So i personally had to practice and find for myself a method.

@backyardfoundry

7 ай бұрын

I appreciate the input! I am still just a hobbyist so I try to convey the information as best as possible, but mistakes and missing information is definitely possible.

@blueknyght923

2 ай бұрын

I'm sorry, but precipitation is far from quenching, whereas the latter involves rapid cooling of heated metal. Precipitation is also known as age hardening, which involves slow cooling at room temp (i prefer warmer at 30 degrees celsius), which instead of annealing that happens to steel, in bronze metals it actually increases hardness and strength, and more superior to work hardening.

@jeanladoire4141

2 ай бұрын

@@blueknyght923 thanks for the precision ! Precipitation hardening refers to the formation out of solution of some kind of hard structure (like martensite), and indeed i've seen that it was linked to heating up alloys, but as you said, steel doesn't need to be heated up, it rather needs to be cooled down. However i've seen that high alloyed steels do précipitation harden, around 500C, if you quench it first

Copper / Beryllium alloys are toxic and should only be worked with very cautiously. :)