Propane needs to mix with air to burn at a specific ratio, but with trial and error I was able to get the burner to burn with a nice blue flame. The mixed propane and air then is forced out of the burner holes or slots and when ignited it burns. This burner design works off the venturi effect, as gas is being forced out through a small orifice mounted at the end of the burner, it pulls air along and mixes inside the burner tube. So lets talk about theory, at least in my layman's terms Welder with cast iron welding rods or MIG Welder with stainless steel wire (this makes things easier but it is possible to braze the parts together as well with a propane torch).Tap and Die set (8-32 tap and 1/8" NPT tap).Drill and Drill bits Small Drill bits (1mm or 1.2mm) - you can get set off amazon if you can't find them locally.Flare fitting to go from the propane hose to 1/8" NPT thread.Low pressure BBQ regulator and hose (depending on how many burners you hook up you will need to increase the capacity of the regulator).3/4" to 1 1/2" black iron reducer fitting.1" x 1/16" stainless steel tubing (could substitute this with regular steel but stainless will last longer).This is what I used for materials to build one burner: ) with detailed instructions and video but here is the process as well: To build the burners I posted a whole other Instructables on my other account (. Buy some burners if you do not have the skill or knowledge to make them.Īt a minimum safety glasses, non flammable clothing must be worn and this burner should only be operated outside. This information is provided as reference only. I take no responsibility if you hurt yourself, property or others while trying this. Warning working with propane can be dangerous, DO NOT attempt this unless you have some idea of how propane burns. The front was made to be removable by tapping some holes so bolts could be used to secure it. The casters I used have a threaded rod so it was as simple as drilling out the holes and then bolting in place.įor the top of the frame where the burners would be mounted some 4" 18 gauge stainless steel was cut and then welded on the two sides and back. It should be noted that stainless steel is really hard to work with, anneal the metal with a blow torch really helps when drilling it.Īfter the main part of the frame was built, some short pieces of stainless angle were welded to the legs so the casters had a place to be attached. If you don't want to tap holes a bolts and nuts works just fine too. This allows the front and back to be bolted together making a frame. Then the holes had threads cut with a 8-32 tap. Holes were drilled on the flat stock that makes up the sides of the frame. If the two measurements are the same length then it means it's square. Measuring across the diagonal is the best way to check for squareness. Then the front and back were bolted together, I did this by cutting to length some of the stainless flat stock and clamp them in place to check for squareness and adjusted as needed. The front and back were made first, it was important to make sure to check for squareness as you are building and correct as needed. I wanted the griddle to be portable so it could be tore down for storage and transportation. The frame is made from 1" x 1/8" stainless steel angle and 1" x 1/8" stainless flat stock. The first thing to build was the frame, I sized the griddle to be 22" x 18" so the frame would match those dimensions. This build requires a welder but it is possible to make it with out welding and just bolt all the parts together or using a propane torch to braze certain parts together. The reason for this is stainless steel is a poor conductor of heat and doesn't season well (i.e non-stick). The whole thing will be made from stainless steel except for the griddle cook plate itself, which will be made from mild steel. In this Instructables I'm going to build an outdoor griddle from scratch including the burners. Another benefit is it keep all the cooking smells and fumes outside. Such as searing steaks, kabobs, fajitas filling and even stir-frys. The big piece of steel is what makes them able to cook lots of food at once and sear foods with ease.Ī grill is great for when you want to cook foods directly over coals or flame but a griddle can cook all those same foods plus more. They basically are a big piece of steel with burners that heat the steel. They are an awesome way to make food when entertaining a group of people. Home griddles are becoming more and more popular.
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