Step 6Add the sand
This is a match light system and I like a plumbing torches or BBQ lighters to light mine. Light the torch, then turn on the gas with the flame above the sand. It will take several seconds for the sand to fill with gas and rise to the top.Now use the needle valve to adjust the flame. Once lit it’s time to play in the sand with simple tools (see pictures). This works best after dark when you can turn the flame down very low tell you only see a blue flame.
Enjoy
Notes:
Do not ever touch the sand with your hands or any other part of your body! It will stick and burn you. Use caution, common sense and remember fire is hot!
Don't worry about fire traveling up the hose, but do make sure you fittings are leak proof (soapy water is a good way to test).
Keep your tank as far away as possible from your pit.
Here is a video of it at a party the next day after I built it. The noise is from a Tesla coil show next to us from my good friends at Omega recoil.
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I've never seen anything like this, it's awesome :D