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You can add a small amount of Vitamin E oil to help it last longer and stave off rancidity.
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Science of Baking
Another alternative hotface: Sodium Silicate Gel. Sold on Amazon and eBay. For the miserly or impatient, can be made through a chemically hazardous and time-consuming process involving boiling cat litter crystals (not the clumping clay variety) and lye. If you opt for the latter, please do it outside in a well-ventilated area, with long, chemical-resistant gloves.
It's not the cat litter you'd need to worry about. You could boil cat litter all day long and not get sodium silicate gel. It's the lye/caustic soda/sodium hydroxide, mixed with the cat litter that makes it a somewhat dangerous process. https://www.instructables.com/id/How-to-Make-Sodium-Silicate-Water-Glass/
Goggles and a respirator wouldn't be going overboard. Just buy the stuff...
Electric melting crucible furnace
@imerrymary I've read that same bad information. Fact is BOTH perlite AND vermiculite are used in gardening for exactly the same reason. Perlite dust is more common in refractory, but I have yet to find a good reason why that is, other than the perlite manufacturing association website pushing it as an alternative use for the stuff. Both perlite and vermiculite dusts are (like all similar dusts) extremely bad for your lungs and carcinogenic. Much more so than cement or plaster. That said, I use perlite dust regularly in refractory and hypertufa.
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Raspberry Pi Class
LEDs and Lighting Class
Farma: a home bioreactor for pharmaceutical drugs
building the poor-mans mini tesla coil ( slayer exciter)
Not who you were asking I know, but I found mine on Craigslist and paid $4200.
'90 Ford E-350 Stripped Chassis 7.3L IDI Diesel. Roughly 13 MPG. The real trouble with these things is the electrical system. At least, if yours, like mine, still has all the original flashers and sirens.
So make sure you get one from somewhere very arid. I'd say that holds true for any older vehicle. The best classic cars and trucks are in the Southwest.
I'm 6'2" and cannot fully stand. Anyone under 6' could though.
Raspberry Pi Lamp LAMP Server
Think of it like an opto-isolator or simple diode. While it could be removed and the torch remain functional, it's about as advisable as driving a car after removing the brakes and steering wheel., sans seatbelt If, for some unfortunate reason, your flame were to enter into the tubing (too close to your cutting surface or not enough positive gas pressure could both cause this (really, these are both the same thing)) it would travel down the tube and then -- in theory -- be interrupted by the bubbler. Without it, it could travel all the way back to your gas source. Remember, fire requires oxygen to burn, but we're supplying more than enough oxygen inside the line from the electrolysis to fuel our flame.
Gold recovery correctly
DIY Thermic Lance Kit - Cut Steel With Burning Iron
NOAA Satellite Signals with a PVC QFH Antenna and Laptop
Live Reverse Engineering
Salvaging Liquid Crystal Displays (LCDs)
Adapt tool batteries to work with power supply and have a dual system
Refillable Air Can Life Hack
Homemade Stick Welder - From Microwave Parts!
How To Make The Mini Metal Foundry
Making an ARC Welder - Part 1 of 2
Improving a Welder Ground Clamp
Make a carbon arc torch for your 220 volt stick welder
Refreshing your Lincoln AC-225 220V tombstone welder
Fire from Soap! Tealight of the Apocalypse
How to Make Twix Cups - Only 3 Ingredients!
Make an interactive iPad controlled LED Wall
Make a Bridged Stencil From Any Image