This distributes the heat evenly and does not overheat the side of the crucible.ģ) The refractory you use must be able to take the heat within the furnace. The body could be made of screen and it will work the same, it’s only purpose is to hold the refractory in place.Ģ) The burner should come in at an angle (see diagram #1) so the flame forms a vortex or whirlwind around the crucible. The steel shell does not hold in any heat, it is the refractory that holds in the heat (the lining inside the furnace shell). If you follow certain basic principles the furnace will work just fine.ġ) A furnace body is mainly an enclosure to hold the heat that the burner puts out. Think of this as a recipe for building the furnace, there are many variations you may use depending on our skills, the tools in your shop and availability of materials. The pictures here are from a class I did where we built 3 furnaces. This furnace is able to melt 25 lbs of bronze in about 30 minutes. If you have questions or comments please contact me at: love to hear from you!Ĭapable fo melting up to 30 lbs of Bronze Uses a party helium tank (the same size as a 5 gal propane tank).Melts 30 lbs of bronze in 30-40 minutes.This is exactly the same furnace I use in my own studio. The furnace we built is a small helium tank furnace, capable of melting 30 lbs of bronze in about 40 minutes. Thus it is written as a "How To" article, meant to be combined with the seminar, which includes discussions on safety and proper use of the furnace. I took pictures during the seminar and combined it with pics of my own furnace to create this article with the intent of using it at other seminars. I was invited to teach a seminar on furnace building for a foundry class at El Camino College. The main difference is a smaller sized freon tank rather then the 5 gal propane tank. I'm also a blade-smith and have made several forges using similar materials and techniques as this furnace. To start, take a look at my safety page and Furnace Lighting Procedures. Dangers inculde propane explosions, severe burns, carbon monoxide poisoning to name a few. Building and operating a furnace without proper knowledge and a good dose of common sense can lead to injury or death! Read up on safety procedures before using this or any furnace. Should you attempt to build a furnace like this one, I am not responsible for ommissions, mistakes, or errors that may lead to injury or death. I am putting it here for educational purposes only. This article is an account of constructing a small bronze casting furnace. Project #1: Direct Wax Sculpture, Ceramic Shell Casting.Project #2: Sandcasting a Bas Relief Bronze Plaque.That copy of win7 that started out as a beta was used on 3 or 4 PCs, and after being upgraded to win10 has been on 2 so far. You can also migrate a copy of Windows from one PC to another, though that works much better with win10. ![]() ![]() ![]() software I've had since win7 was in beta carried over fine when I upgraded that copy of win7 to win10. While Blu-ray isn't as popular today as DVDs & streaming, DVD video doesn't look great on a 4k display, and the companies offering streaming services are under financial pressure - they're more likely to fold than Hollywood stopping Blu-ray production & sales.įar as old software goes, one solution is VMs. Video streaming however cannot match the quality of video Blu-ray discs, because you can't squeeze their high bit rate through the Internet's pipes. The Blu-ray discs you burn can have questionable longevity, so probably not the best solution for long time storage, while video Blu-rays are plagued by heavy DRM. There's also Blu-ray on DVD, which is actually part of the spec. While the video DVDs you can buy today are purposely of lower quality as DRM, very good quality video in DVD format can be very watchable on screens up to 1080. DVDs are still perhaps the best, least expensive way to store files locally long-term, with the only disadvantage being the limits of ~4 - 8 GB per disc.
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