There is a posting on the local craigslist for an bunch of food grade drums of various sizes. I thought a 15 gallon one would make a great fermenter for 10 gallon batches. I was wondering if any one knows of any place that makes conical lids for these things. It seems like it would be a useful product for other industrial uses and not just homebrewing. There is also a plastic fabrication shop in town so i also thought about having one custom made if it wasn't too spendy. It seems like it would work well if i took the lid off and cleaned the gasket and everything else after every brew. Has anyone tried this?