Give a Gift
Find your DIY supplies in the Maker Shed → Kits, Books, Components, 3D Printers, Arduino, Raspberry Pi, More!
Clever… use a marble.
I’ve seen many a marble with air bubbles and impurities. I would not toss one in the oven.
I thought that was pretty clever, until BigD145 mentioned the air bubble thing. I’m sure a ball bearing would be safer and probably as cheap. I suppose if a person really wanted to use a glass marble, it might be a pretty good idea to bake the marbles in a safe container first to determine if any will fail.
Marbles are formed at the melting point of glass. The air bubbles should be a partial vacuum, and be incapable of overpressure below 1400F. That said, I still wouldn’t toss them in the oven either.
A crumpled ball of cupcake paper should do the same job. Or maybe use some tin foil.
Make: and Maker Faire are registered trademarks of Maker Media, Inc. | Make: Site Map
Copyright © 2004-2015 Maker Media, Inc. All rights reserved