Ultra thin silver and gold foil

[rppearso]

does anyone know where to buy ultra thin (0.024" or less) large silver and gold foil squares (like 7"'x7" for gold/silver and up to 3'x6' for silver)?

Looking into large and small sputtering and sealing around a large surface area of metal and connecting the electrode outside the vacuum is easier than trying to lay out a bunch of small pieces and then trying to electrically connect them.

 

[Tom.G]

https://www.google.com/?gws_rd=ssl#q=gold+smelters+in+usa

If they can't supply foil, ask them which of their customers may be able to.

 

[Baluncore]

(like 7"'x7" for gold/silver and up to 3'x6' for silver)?

Exactly what units are those?

 

[rbelli1]

ultra thin

Assuming (") means inches that is pretty thick foil. Where does the ultra thin come in?

BoB

 

[Baluncore]

Yes. 0.024 inch is not really foil, but a fairly thick shim or a sheet material.

If I needed shim, I would buy a commodity, in this case drawn round wire, then roll it through jewellery rollers to make the thickness and width material that I required for my task. That way I buy the material for the lowest price and can adjust my stock for optimum thickness as I operate the process.

https://www.alibaba.com/product-detail/silver-metal-99-99-foil-ribbon_60289383545.html
https://www.alibaba.com/product-detail/999-pure-silver-sheets-for-jewelry_60290250116.html
https://www.alibaba.com/product-detail/99-999-pure-Au-wire-gold_60310181784.html?s=p
https://www.alibaba.com/product-detail/High-quality-100-Metal-Leaf-Pure_60254960716.html?s=p

 

[rppearso]

Yes. 0.024 inch is not really foil, but a fairly thick shim or a sheet material.

If I needed shim, I would buy a commodity, in this case drawn round wire, then roll it through jewellery rollers to make the thickness and width material that I required for my task. That way I buy the material for the lowest price and can adjust my stock for optimum thickness as I operate the process.

https://www.alibaba.com/product-detail/silver-metal-99-99-foil-ribbon_60289383545.html
https://www.alibaba.com/product-detail/999-pure-silver-sheets-for-jewelry_60290250116.html
https://www.alibaba.com/product-detail/99-999-pure-Au-wire-gold_60310181784.html?s=p
https://www.alibaba.com/product-detail/High-quality-100-Metal-Leaf-Pure_60254960716.html?s=p

That is a really good idea, where do you get a jewelry roller? Then I could just buy junk silver or gold and then melt it down and roll it out? can you melt silver with this - http://www.bethlehemburners.com/torches/alpha

then just pour it out over a surface and let it harden?

 

[Baluncore]

That is a really good idea, where do you get a jewelry roller?

ebay search; Jewellery Rolling Mill. I get 290 listings. Most are only 3" or 4" wide.

can you melt silver with this -

It depends on the gasses and the amount of heat you need. Reduce heat loss by using a small enclosed oven.

then just pour it out over a surface and let it harden?

Spill the melt into a long groove, maybe cut in wood. Then when hard, roll it through the round profile section of the jewellery rollers to make a rod of uniform needed diameter. Then roll the rod between the flat rollers to make shim.

Edit:
also ebay search; jewellery furnace