Crofter, that thing looks like it would last a lifetime lol. Nice bit of craftsmanship.
FYI Glen H be careful with hand bent coils. I use work at GE appliances as an engineer, Mg0 is a the heat conducting dieletric filler between the sheath and Nickle-Chrome wire. If the sheath is bent to sharply the MgO is displaced and the heating wire can short to the sheath in a catastrpophic failure. In the industry we call it zippering, the sheath basically zippers open, sparks, mini-eplosion, etc.Hi,
I made one, that was very inexpensive. I purchased a 12 volt car/travel coffee cup heater that plugs into a cigarette lighter in a car. I also used a 3/4 inch copper pipe end cap.
I formed the heaters coil around the copper cap. it works good. I also made a measuring scoop out of a 1/2 inch copper end cap and soldered a handle to the end of the cap.
Yes, exactly the powder keeps the Heated wire (Nickel Chrome) centered within the sheath. The white insulating powder is Magnesium Oxide (MgO), under many different trade names. In the manufacturing process the rods are packed straight and bent into desired shape with cnc benders. There is a minimum bend radius and amount of bends that is considered safe, I don't remember those specs.Thanks for the FYI Burns, much appreciated and good point. I used to work with Metal sheathed heat tracing cables and remember the white compound that kept the element centered and away from the out coating. Trying to remember the name?? Pyro something??
Awesome! Glad you liked my design!I made four like KY Mike's design, thank you! Ran all four in parallel and got a bunch of hives done right quick!
One apiary is in a sheltered location with very still air. The vapor stayed like campfire smoke and chilly scouts. I am very glad I chose to use my APR first thing.
Mine has a caked on light grayish residue after using it. I just scraped it out after using it.So after treating all my hives for my first round I am curious what kind of residue people are finding in their vaporizers. It seems that there is almost always a little crud left over. Thoughts?