The inside parts of the mould, before waxing and oiling (I covered everything in wax, then motor oil to increase the chance of everything coming apart all nicely when the concrete is set).
3 other sections of the mould, pre wax and oiling... Using wax, motor oil and silicon is messy as F. Managed to find some thinners to remove some silicon off my jeans, which which I was super pissed off about..
adding wax to the mould, and adding some board stuff to create an air gap on the bottom of the mould, for insulation around the hottest parts.
motor oil added, and next part siliconeds on.
Way easer to apply silicon with a nozzle, even if it is a duct tape retrofitted job...