I recently purchased an old, empty acetylene tank from someone on the marketplace, and I want to convert it into a pass-through forge for some metalworking projects. I know the procedures for safely emptying and purging propane tanks, but I'm wondering if the steps are similar for an acetylene tank. My plan is to unscrew the top, circulate pressurized air for a couple of hours, then fill it with water and cut it open with a bandsaw, just like I do with propane tanks. Is that a safe method?
3 Answers
You seriously want to avoid cutting that tank. The fillers inside, like calcium silicate, help manage the instability of acetylene, and attempting to cut it open can unleash trapped gases that are incredibly hazardous. It's better to find a safe way to dispose of it than to mess around with cutting it open.
Definitely don't try cutting open an acetylene tank. They're not just empty—they contain acetone and a porous material that absorbs acetylene to prevent explosions. Even if it seems empty, there could still be dangerous residues inside. It's really not worth the risk!
Honestly, it’s probably best to forget about cutting it open. The tank may have some residual acetylene or acetone, and even if you fill it with water, the risk of ignition is still there. There are just safer alternatives for metalworking without using something that could potentially explode.
What if I just dispose of it? Are there places that can handle it safely?
So, are there any safe ways to repurpose it? Or is it just a no-go?