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Author Topic: Roman brooch silver casting  (Read 3872 times)
Kent
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« on: November 27, 2015, 11:09:18 AM »
Hi all been a bit cheesed off with the weather as late so decided to have a go at casting one of the roman brooches iv'e found in silver not finished yet but thought i would put picture up.

* IMG_20151127_105857233_zpsudmk4as9.jpg (145.87 KB, 575x1024 - viewed 427 times.)
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1x Copper hammered
14x hammered
78x milled silver
6x roman brooch
12x silver
15x spindle whorls
3x love token
7x roman coin
1x Republican denarius
Cymro
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« Reply #1 on: November 27, 2015, 11:27:52 AM »
Nice detail - what are you using for your moulding material?
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Kent
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« Reply #2 on: November 27, 2015, 11:32:58 AM »
Delft clay
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1x Copper hammered
14x hammered
78x milled silver
6x roman brooch
12x silver
15x spindle whorls
3x love token
7x roman coin
1x Republican denarius
Cymro
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« Reply #3 on: November 27, 2015, 11:42:53 AM »
That would explain the good detail! Do you use it like plaster of paris, letting it set?
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Kent
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« Reply #4 on: November 27, 2015, 11:54:29 AM »
No its like sand with an oil added to it you just compress it in casting rings press the object half way in the material then add the top ring compress take apart remove item put back together then your good to go.
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XP Deus/CTX 3030
2015/16
1x Copper hammered
14x hammered
78x milled silver
6x roman brooch
12x silver
15x spindle whorls
3x love token
7x roman coin
1x Republican denarius
Cymro
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« Reply #5 on: November 27, 2015, 12:04:24 PM »
Ahhh . . . I've not come across that, but I do know of oil bonded sand (Petrobond) and the yanks use a home brew called K-bond which uses ingredients I can't get over here (bentonate) Cousin is an industrial chemist and he can't get me any either.

I do my own castings but I use traditional green sand, made with fine silver sand and bentonite clay. I don't need that level of detail, but I've seen oil-bonded sand castings which retain all the details on a coin (as an example . . .  Wink)
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Kent
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« Reply #6 on: November 27, 2015, 01:50:47 PM »
Getting better

* IMG_20151127_134156238_zpsxv5tmufr.jpg (148.68 KB, 575x1024 - viewed 344 times.)
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XP Deus/CTX 3030
2015/16
1x Copper hammered
14x hammered
78x milled silver
6x roman brooch
12x silver
15x spindle whorls
3x love token
7x roman coin
1x Republican denarius
b.buoy
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« Reply #7 on: November 27, 2015, 02:15:50 PM »
Very good Ken.
Are you going to declare it as treasure trove??
Only joking, honest
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Dungbeetle
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« Reply #8 on: November 27, 2015, 03:57:05 PM »
I like it Ken, you're a man of many talents !
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probono
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« Reply #9 on: November 27, 2015, 04:07:51 PM »
Very nice.

I intend to do something like that when I've finally cleared up the garage, got a decent workbench in there, and something to melt silver in too.

I made a few moulds some time back using cuttlefish bones, and even a couple using plaster of paris I made by grinding and heating alabaster you can pick up on Penarth beach.
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sharkey
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« Reply #10 on: November 27, 2015, 06:55:53 PM »
good skills Ken, very nice
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« Reply #11 on: November 27, 2015, 07:18:10 PM »
Superb Ken!
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« Reply #12 on: November 27, 2015, 08:17:58 PM »
Well done Ken,who knows what's next !! By Royal appointment perhaps !!LOL👍
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wagis
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« Reply #13 on: November 27, 2015, 10:39:12 PM »
Nice one Ken will you be making your own hammered coins next lol
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jayhay69
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« Reply #14 on: November 28, 2015, 12:21:38 PM »
very nice Ken any chance you could do a video of the process i`d like a go at that mate Smiley
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2017
1 x Gold Guinea
1 x Gold posy ring
8 x Roman coins
2 x Roman Brooch
2 x Silver Denari
6 x Hammered
3 x Silver Milled
1 x silver thimble



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