DIY Steel Fire Pit




About: Find me on YouTube and Instagram (@robertjkeller)!

I made this fire pit in about a day using approximately $40 USD worth of steel. Check out the video as well as the instructions here!

Step 1: Cutting the Steel Plate (1/3)

I started with a 24" x 24" steel plate and 2 steel gussets that were 12" along two sides. They were all 3/16" thick. I also used a 10-ft long piece of 1/2" square steel tubing for the base.

Step 2: Cutting the Steel Plate (2/3)

I set up a scrap piece of steel tubing to act as a guide to cut the steel plate in half. I just used a regular cut-off disc in my angle grinder.

Step 3: Cutting the Steel Plate (3/3)

This left me with 2 plates that were each 12" x 24".

Step 4: Assembling the Basin (1/4)

I lined up a 12" side of one of the gussets with a 12" side of one of the plates and tacked it in place with the welder. I was using 0.025" MIG wire and 75% Argon/25% CO2 gas for this project.

Step 5: Assembling the Basin (2/4)

I repeated the same thing on the other side.

Step 6: Assembling the Basin (3/4)

I laid out the second plate on my work table and set the three completed sides on top of it. After lining everything up, I welded it in place and completed all the other welds on the sides that were just tacked in place.

Step 7: Assembling the Basin (4/4)

I switched to a sanding disc in my angle grinder and ground off all the welds, because they were way too ugly to leave on there :)

Step 8: Cutting the Base (1/4)

I broke down the 1/2" square steel tubing and cut 8 pieces that were each 12" long. I'm using a metal-cutting chop saw for this. These are different tools than a regular miter saw... definitely don't attempt to cut steel using a regular miter saw!

Step 9: Cutting the Base (2/4)

I used a small metal-cutting bandsaw to notch out a 1/2" from both sides of 4 of the pieces. This will allow me to slide another 1/2" piece into the notch and not have any holes showing. You could also just cut 45-degree miters, but I just personally prefer this method.

Step 10: Cutting the Base (3/4)

Here's what the notch looks like.

Step 11: Cutting the Base (4/4)

The goal was to end up with 2 sides that were notched out for each of the 2 squares. So 4 notched sides and 4 solid sides.

Step 12: Assembling the Base (1/7)

Hopefully here you can see how the pieces fit together and the whole notching-thing makes sense. I'm using a 90-degree vice to hold the pieces square and weld them, but you definitely don't need a special vise. Just a speed-square or something that's 90 degrees will work fine.

Step 13: Assembling the Base (2/7)

I welded up all 4 corners of each of the 2 squares.

Step 14: Assembling the Base (3/7)

Here's the result.... 2 squares that are about 12" on each side (the notching process makes them very slightly rectangular).

Step 15: Assembling the Base (4/7)

I ground down the welds with a sanding disc again to make 'em pretty.

Step 16: Assembling the Base (5/7)

I cut one last piece of 1/2" tubing to 24" long. This will be used to connect the 2 squares and complete the base.

Step 17: Assembling the Base (6/7)

I welded the 2 squares to the cross-beam, checking again and again for square as I went.

Step 18: Assembling the Base (7/7)

Here's the completed base.

Step 19: Attaching the Base (1/3)

I used some (approximately) 2" side wooden spacers to make sure the base was attached to the basin at the same place on each side.

Step 20: Attaching the Base (2/3)

Welding one side....

Step 21: Attaching the Base (3/3)

And welding the other side...

Step 22: Finishing Up

The last thing to do was smooth out those welds where the cross-beam connects to the squares.

Step 23: Done!

Thanks for following along! Check out my YouTube channel and Instagram for many other projects!



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    4 Discussions


    Is there blueprints anywhere for this so I can have measurements for everything?


    10 months ago on Step 23

    We have a be nice policy.

    Please be positive and constructive.
    long sleeves uv light from welding.
    nice build higher sides and you will have cute hibachi grill


    11 months ago

    Great design and great instructable. Just that I would've used 45 degrees angles for the corners. Easier to cut and to weld.


    11 months ago

    This is really well done, and a nice simple design too. We need a little fire pit at my house, and this is something I might make someday. Thank you!