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So basically, I built this forge out of an old aluminum grill top. My hopes were to use this as a small coal forge for bladesmithing. My question is, will the aluminum shell be able to withstand these temperatures with proper insulation? The shell is approximately 28" wide, 20" long and 8" deep. Essentially, I did a 3 inch layer of pea gravel on the bottom, around a black steel air intake. I used a mound of foundation sand for the pit, and filled in the empty space with a clay top soil. I'm pretty confident that this will be sufficient insulation on the sides/bottom, however I am concerned about the lip of the shell conducting heat. It is slightly raised above the pit and is as close as 8" in parts. I have included a picture of the set up. This is my first forge and I would love some experienced advice. Thanks in advance.
PValBlanc posted a topic in Mokume GaneHi, This would be my first time posting on these forums, and I need some help. I've my share of experience with liquid-state torch fired mokume, and am setting up to try my hand at kiln fired solid-state diffusion bonding instead. I've found most of the information I need except one vital detail. I can't seem to find any guidelines on how to select temperature for bonding. Let's start simple here and suppose a sterling silver/copper billet. Sterling melts at 893 C Copper melts at 1083 C Sterling is a hypoeutectoid alloy at 17.5% copper The Eutectic point of silver/copper is at 28.1% copper and around 790 C So here's the question. Do I want to be heating my billet a little under the melting point of sterling, seeing as it is the lowest melting point? Should I be heating a little under the eutectic point? Not sure if the eutectic point is relevant if nothing is hitting liquidus. Perhaps none of the above? Any advice would be greatly appreciated. I can't get my hands on the midget/fergusson books, and most other sources I find all take for granted you've got the basics figured out. Cheers -Pat.
I am looking for a way to measure the temperature of my steel in the forge and wanted to see if anyone in the forums has experience with an IR temperature sensor. In particular, this is the current listing on Amazon.com that I am considering: http://www.amazon.com/Handheld-Non-Contact-Infrared-Thermometer-Targeting/dp/B007EYX0TS/ref=sr_1_17?s=hi&ie=UTF8&qid=1395934068&sr=1-17&keywords=high+temperature+type+k The temperature measurement range is -58-3002F and also has a thermocouple input channel. If anyone has experience with this unit, please let provide some feedback.