Mokume gane to steel?

[GOATMAN]

us quarters 1964 or older are silver. Check your couch!

[Chuck Richards]

Fine Silver can be had at any jewelery supply outfit. Rio Grande is the place I use. If you are looking for silver braze this is a different animal. It can be purchased form McMaster Carr or MSC.

[wolfy9005]

whats the melting point of the alloy? i know copper is around 2500C and aluminium either 1000C or 2000C(not sure, but they add something to it in manufacture and it reduces it's melting temp) and silver is even lower.

So i guess silver solder would be your only way, unless the melting point is found to be higher(ie. manageable with a small gas torch)

[TarAlderion]

2500 C for copper and 1000-2000C for aluminum!? Not even close, try again, thats way way too hot! Copper is about 1100 C or 2000 F, and aluminum is only around 660C or about 1220 F. Do a quick search before posting wrong info.

The other thing to keep in mind with brazing or soldering is whether the blade has already been heat treated. If you are going to be brazing a heat treated blade, you will over heat the blade and ruin the HT. If the blade still needs HT, you will probably end up un-soldering/brazing the piece. Some things to keep in mind. Silver solder works very well since it melts around the temperature you want to temper at anyways (400F) and will not ruin your HT.

[wolfy9005]

Copper - Wikipedia
i stand corrected, i read boiling point, not melting point

Aluminium - Wikipedia
for this i was going from memory but i guess i was thinking about refinement from bauxite

i apologize for posting incorrect information, but it was late and i didnt wanna do a 5 second search :/

[ThomasPowers]

Note that he means the *soft* silver containing solders like stay-brite. (they only have around 5% silver in them) Not the jewelers hard solders that melt in the glowing temps! Which IIRC old british silver coins could be used for a medium grade of hard solder.

[Golden_eagle]

I found two 1963 quarters.... not that much silver to be harvested....

[TarAlderion]

Thanks for that clarification Thomas, since there is a big difference between the soft low temp silver solder and the hard silver jewelers solder. Pure silver wont melt until around 1750F ish, so it wont be good for this type of application, unless you were to HT after brazing.

[Golden_eagle]

Just checked the earlier pages; Tom- yes it is to a blade but also to a Tang. I'll try to get the prelemenary graphics, (i'm planning to make the Knive for the 1st anny. of the forge)