Licensing
Through all my readings about bio-diesel, I do not recollect a discussion of licensing. But, given the way government agencies work, I bet there are some regulations or laws that apply. This would apply to people in many countries. Of course this might not be by direct regulation, but rather by and associated process. For instance it is not necessarily illegal here to make ethanol, but transporting over a certain amount may be considered under the regulations of hazardous materials or making over a certain amount without paying alcohol tax may be illegal. I had this discussion with someone who used to work for an energy department and he insisted that you needed a permit to make bio-diesel in our home state. He was probably talking about making commercially (for sale to others). One wonders how many of us citizen scientist are violating law or regulation when doing chemistry experiments that do not involve drugs, weapons or explosives. We know that in at least one USA State there are laws regulating chemistry glassware. I would expect that Canada has some odd regulations or laws as well.