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Old 12-19-2019, 10:42 AM
Mark Bickers Mark Bickers is offline
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Centrifuge molds

We recently acquired a second hand Essemce centrifuge machine and just wondered if anyone (mainly European based as we are in the UK) knows of a mold maker with experience with these...or someone that has pre-existing molds that they might part with?

Many thanks for any help in advance...
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Old 12-19-2019, 01:33 PM
Tom Fuhrman Tom Fuhrman is offline
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When I was at Reidel in Austria many years ago, they were doing some centrifuge casting. You might check with them .
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Old 12-20-2019, 11:19 AM
Michael Ahlefeldt-Laurvig Michael Ahlefeldt-Laurvig is offline
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http://www.formverkstad.se/
Thomas makes almost everything for the swedish glass industri
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Old 12-21-2019, 02:36 AM
Mark Bickers Mark Bickers is offline
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Tom - Thanks for tip, I will drop them a line and see where I get to.

Michael - I sent over an email and unfortunately was told that Thomas has retired. However they helpfully passed me on to another mould maker also based in Sweden. Be interesting to see where it goes.
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Old 12-21-2019, 08:46 PM
Michael Ahlefeldt-Laurvig Michael Ahlefeldt-Laurvig is offline
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Would that be Gunnar Englund? Hes a really nice guy and a great sculptur in his own right.
Gunnar makes mostly wood molds, or at least used to.
Thomas made lots of graphite molds, cnc milling, turnning on a lathe.I wonder whos taken over
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Old 12-22-2019, 02:46 AM
Mark Bickers Mark Bickers is offline
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Michael - it was Håkan Karlsson from Mejk Verktyg AB. Now I just need to work out how to wrestle a SketchUp model into a IGES file format!
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Old 12-22-2019, 09:42 AM
Eben Horton Eben Horton is online now
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If you know what you want and can source a big chunk of graphite, any machinist with a CNC router can cut you a mold. Just warn them about graphite dust and tell them to stick a shop vac hose next to the cutting head.
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Old 12-22-2019, 12:06 PM
Tom Fuhrman Tom Fuhrman is offline
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Eben, are you sure that graphite is the best material for centrifuge casting? I would think it would be steel or iron as they may take a lot more abuse.
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Old 12-22-2019, 01:13 PM
Terry Crider Terry Crider is offline
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I watched Mosser Glass in Cambridge,Ohio spin out some (what to me was giant sushi platters).
They was dumping what looked like 6/7 pounds of glass in the center and spun out to about 3 ft. dia.
The way the glass flowed across the mold - I don't think graphite would last long and probably end up with contamination on the bottom.
They would probably send you to Island Mould --- your wallet would probably be a whole lot lighter, but anything you got from them would last a couple of life times.
Terry
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Old 12-22-2019, 05:20 PM
Michael Ahlefeldt-Laurvig Michael Ahlefeldt-Laurvig is offline
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On essemce web site go to contact and write and ask Jan Melin who makes metal molds now. Jan will know
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Old 12-22-2019, 07:48 PM
Eben Horton Eben Horton is online now
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Quote:
Originally Posted by Tom Fuhrman View Post
Eben, are you sure that graphite is the best material for centrifuge casting? I would think it would be steel or iron as they may take a lot more abuse.
Well, sure. But is he going to make millions of pieces?
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Old 12-22-2019, 08:42 PM
Tom Fuhrman Tom Fuhrman is offline
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Quote:
Originally Posted by Eben Horton View Post
Well, sure. But is he going to make millions of pieces?
Like terry Crider said m when you're slinging several pounds of hot glass into a mold the chances of graphite deteriorating or busting can be very high. If he could make the right contacts there are some Indian companies that can do the molds fairly reasonable. A lot of it depends on the size and the detail required in the mold. Graphite might also be a problem because it will not suck enough heat out of the glass quick enough which is required in casting or pressing. It has to put a cool skin on the glass quite quickly as most centrifuge casting pieces are fairly thick.
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Old 12-23-2019, 07:59 AM
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Pete VanderLaan Pete VanderLaan is offline
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Poured glass into graphite makes it pretty porous pretty fast, even high density ones.
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