this post was submitted on 07 Sep 2026
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Not yet you haven’t. You just made a ring. Need fire.
PS: make sure it’s the right type of stone. Don’t want it to spall when you heat it. You could loose an eye.
The fire could loose a shard of stone and then op could lose an eye.
Why must you tease us this way??
🫦
Light it
Its really porous, should be ok
Nope. The opposite. You want dense rocks that can't hold water inside them, I usually use granite cause it's the one abundant where I had to build (temporal) fire pits. Don't use limestone, conglomerate rocks, and the like.
I think you might be smoking crack.
The ideal natural rock for fire stuff is pumice
Lava rock is a bit different from other rock... you should definitely have a metal insert in there if you're using landscaping brick, it's not meant for direct fire.
I've only seen pumice stone used in (sheltered) gas fireplaces, idk I'm not really that much of an expert, I was told what I put in the comment when I was a child and brought some rocks for a fire pit my uncle was building and he said 'No! Those will explode, look for some like these or these' pointing to some granite and a big quartz (or quartz-like, I ain't no geologist) chunk. The couple dozen (at least) times I've done it without an incident and a quick web search I've just done confirm that my folk knowledge is right.
That was absolutely uncalled for, Steve.
Concrete that isn’t specifically formulated for high heat can explode. Is it guaranteed? Of course not, but getting the correct materials or at least lining your pit with fire rated mortar isn’t particularly expensive either.
No, natural pumice holds moisture which turns to steam under heat and explodes from the pressure.
The only safe pumice is manufactured bricks made from pumice.
We used to do this at the house of a fellow youth organization member. They had a fire pit, lava rocks in the topiary beds, and a pool. We'd soak some rocks and then throw them in the fire. It would make a loud pop and we'd all laugh about how funny the "ash" felt when it hit us. And then one of the kids started screaming...
Fortunately, he only got a tiny piece in his eye, but the homeowners were like, "it's harmless fun, that happens sometimes." We stopped having gatherings at that house.
A stone with water in it that gets heated to steam can explode. It may launch shrapnel in all directions if heated enough. You do you but please be aware.
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