fire pit questions

It's finally fall, my favorite season. I have a sweet yard, buncha cool trees - a little oasis in the city. I'd like to build a small fire pit.

I have two pallets of bricks left over from when this house was rehabbed in the early '80s, and an iron fence that I could use as a grate. Before I dive in though, a few questions.

First issue: is it a bad idea to just kinda...stack 'em, without mortar? I would prefer this to be a temporary structure, since I have future plans for the spot on the patio this pit would occupy. Furthermore, I'd like to be able to reuse these same bricks for said future project, so I'd rather not have to bash them apart with a sledge hammer in a few months.

Second issue: is it a bad idea to build a firepit out of non-firebricks? Am I running the risk of cracking the bricks? Further, am I running the risk of cracking the bricks of the patio below it?

Yeah, I could buy a metal firepit from a box store. But where's the fun in that?

Of course, when I say fire 'pit' I really mean 'box that sits on top of patio.'

Stack round river rocks and fill with sand

I built a cracking little fire pit in my back yard with just plain cinder blocks. I turned one brick on the side to allow an air inlet at the bottom. Between the first and second course of bricks I put a piece of wire mesh. It is three bricks tall. No mortar, no cracks and I have built some HOT fires in there. I have a store bought fire pit sitting in a box that I'm going to give a try this fall, but my homemade pit will probably stay put together.

After a bit of looking, I'm torn between something simple like this:

And something a little more complex - but sturdy - like this:

The last one with only one grate, and with the third side more fully enclosed. I'd still leave an opening to sweep out the ashes.

Any reason I couldn't do the latter pattern without mortar?

I have been using old cinder blocks for years, both for fire pits and garbage burn pit, never any issues

Yeah, but has the bricks. I say circular design for stability, piece of mesh about a foot up, open front, maybe a few inches of sand in the base to keep the fire off the pation. Mesh might cost 10-15.00, he has everything else on site.

Ooh, I forgot about the play sand I have for the patio. Good thinking. I also have a bunch of sections of old iron fencing for the grate.

Free fire pit, here I come!

I had a pretty elaborate one at my last house. When I moved here I just dug out a shallow hole in the back yard, built low stone ring around. about an hour and works great.

Make sure there aren't any local restrictions on backyard fire pits.

Yeah, this is also going to serve as a low-buck neighborhood test for the brick oven I wan to build back there. I figure our alderman's an okay guy, since he co-owns a neighborhood dive bar.

But this will be a litmus test for the neighbors. We shall see...

I went down to the local metal recycler and picked up a sewer grate frame. Its the part that gets set in the concrete. I just dug out some dirt to let it sit down a little bit into my lawn. Works nice. Cheap too.