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- NEWly buily paintcan furnace June 2020
- Newly buily barrel furnace June 2018
- Videos from several experiments
- Home made fume hood
- Alloying nickel silver
- Making sphecical domes of silver
- Making a flat ring of silver
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Update Jul 2020, new lid for the furnace This furnace is made from a 10 liter (2.1 gal) paint can purchased for $10 at the local hardware shop. It is lined with Fiberfrax (a kind of Kaowool) and the Fiberfrax is lined with Fermit, a 1600°C rated according to the label on the bucket (the site says 1250°C) refractory cement. But earlier tests revealed no melting or softening happened at 1550°C. I got a few 3kg buckets of $11 eacht via Amazon. It is lined by making a kind of porridge with water of it and applying it with a paintbrush to the inside of the furnace. The bore is about 15cm / 6" and the bottom is a cell concrete block lined with the same blanket and coated with Fermit as well and an upside down old crucible resting on the solid floor is used as a fixed plinth. I ran this furnace many times for iron casting and it reached 1500°C within 15-20 minutes with a full crucible (0.8-1kg) of cast iron. But I had no proper lid so I just put a blanket on top to keep the heat inside during melting. In july 2020 I made a lid from chicken gauze filled with leftovers of Fiberfrax and coated it with a thin layer of Fermit. On the inside I made a collar of Fiberfrax attached to the lid which is also coated with Fermit. I did a dry run with the new lid and it withstood the heat very well.
Photos of making the lid and testing of the furnace July 2020
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