Use the grinder to cut open the barrel in the manner shown in the picture. Make sure it is clean before and after that process. Make the stand of the grill by attaching 4 of the fence posts to some plywood via drilling holes and carriage bolts on either end, while another 2 posts (preferably they are of the same length as the barrel) are secured on top. This is where the barrel should be positioned on. Next, drill in the grills and add the lid (the part of the barrel you cut out) with brackets. Light a small fire before doing the finishing touches so you may be certain there isn’t any coatings leftover. Finally, drill in a wooden dowel handle, install an air vent and maybe a temperature gauge, just to make the BBQ a whole lot nicer. You could also apply some high heat resistant paint to prevent any rust. Enjoy your grill, you deserve it!
Step 3: Attaching the lid & grill grates
Step 4: Burn off the inside
Step 5: Finishing Touches
more details here… How to Build Your Own BBQ Barrel by johnnyblegs
“Step 4: Burn off the inside”
This is all it says about safety. Wow. Epoxy resins, hazardous materials, etc, do not always burn off completely, nor do they burn cleanly. If the barrel has a resin coating (common for food containers), do not use. Nor if it may have contained something other than food. This should be “common sense” but unfortunately….
While I do agree that not all things burn off well there it’s a trick that you carb do in order to use any kind puff metal barrel regardless what was in it… get you one off those listings hand held now torches and burn the inside slowly heading the metal to to around 550 degrees and that will take any contaminants that still remain out of the metal.