DIY Patio Heater/fire Pit





Introduction: DIY Patio Heater/fire Pit

Outside Contest 2017

Second Prize in the
Outside Contest 2017

Hi, with fall (autumn) quickly closing in on us and the evenings getting that bit shorter & cooler this is a great project to make. You can get that extra bit of time outside enjoying a beer or glass of wine without freezing your you know what off. It’s actually surprising how much heat this patio heater/fire pit throws out.

Step 1: Have a Look a the Video...

Have a look at the video above to watch how I made this patio heater/fire pit or have a look at my guide below.

Warning do not cut or drill into a gas cylinder unless you are 100% sure it is safe to do so!

Below are links to some of the videos I watched before attempting to remove the valves and wash them out.

Lesson 1

Lesson 2


Lesson 4

You have been warned.

The materials need for this are:

Two propane (gas) cylinders with valves removed, the cylinder washed out and left to air for few days.

Approximately 30inches (760mm)of 4 inch (100mm) steel tube.

1 Stainless steel butt hinge (4 inch)

1 Stainless steel knob

8 nuts and bolts

High temperature paint

Step 2: Cutting the Cylinders.

Making sure the valves are removed and the cylinders are free from any gas cut one of the cylinders in half keeping the top section (There is normally a joint line in the middle of the cylinder so use this as your guide line) then remove the handles from both.

Step 3: Taking Off the Paint.

I decided to burn the paint off the tanks in a small fire as it was proving hard to remove it with a grinder and flap disc. After the fire had done its job and they had cooled down I gave them a quick clean with a wire brush.

Step 4: Welding the Cylinders Together.

On a bench I put the two top ends (where the valves were) together and tack welded them before putting them on their side to finish the welding all the way around.

Step 5: Cutting Door & Hole for Chimney.

At this stage I marked the position of where the door was going to be cut…. Using my grinder I cut the hole (slightly smaller than the size of the tube for the chimney) for the chimney. Before fully cutting the door out mark the position and drill the holes for the hinge! It’s much easier to do this now.

Step 6: Attaching the Chimney.

Attach the chimney by firstly tacking it in place and then welding it all the way around.

Step 7: Fitting Door.

Using the nuts and bolts and hinge attach the door. Everything should line up perfectly. I attached a piece of metal to the inside to act as a stop for the door. I held it place with a vice grips while tacking it.

Step 8: Fitting Door Knob.

Drill a hole for the door knob and attach it. (Remove it again before painting)

Step 9: Cleaning Before Painting.

I gave the whole thing (except stainless steel parts) a going over with a flap disc to clean it up and smooth out any rough bits.

Step 10: Air Intake Holes.

I drilled some air intake holes around the bottom to make sure the fire has enough oxygen when lighting.

Step 11: Painting.

I applied some high temperature black paint using a paint brush. (It fully cures when fire is lit)

Step 12: And That Is It!

All that’s left to do is light it! I use off cuts of wood in it and that works great. It really is a great addition to a patio area. The way it’s designed doesn’t allow for the heat to transfer down to the ground so it can even be put on grass without burning it. An afterthought I had was that if I did a few adjustments I could turn the top of the chimney into a place where I could cook! It’s like a rocket stove.

If you like this project and would like to see more videos from me you can subscribe to my YouTube channel here:Eamon Walsh DIY Thanks.



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As an alternative to fire to remove the original paint, you could also go to someone who does walnut shell blasting. As part of an apartment renovation, I took radiator covers with 50 years worth of paint for 'air blasting'. This was prep for powder coating. They looked brand new and the cost was very reasonable. This shop uses garnet for blasting areas or parts that are rusty.

Great idea Stereosage! I have often thought about purchasing a small sand blaster for such things. It would make the job much easier.

you have some mad skill, I love this

Bringing back arc welding. :) I like it!

Nice idea..! For the folks that want to make one of these... Be ABSOLUTELY sure, there is no gas in the cylinder..!

Let it stand upside down with the valve demounted a couple of days. Then fill it with water and let it sit for the night. That ensures it's absolutely safe to cut it open.

I have to warn you that doing this in the UK is illegal!
We are not allowed to use empty gas cylinders at all for anything but their intended use, if you are found using one a prosecution may be sought against you.

Hi Bob, I Live in Ireland so hopefully that doesnt apply here. :-)