We all know you can powder coat metal but what about other materials such as glass?  In order to powder coat an item there is really only one determining factor, it must be able to withstand 400ºF. Metal is one of the best materials to powder coat because it conducts electricity, allowing the charged powder to be drawn to the part thus completing the circuit.  That leaves out all other non conductive items, can they be powder coated too?  Hot flocking is the most common way of powder coating non conductive objects by heating them up to temperature, pulling them out of the oven and then applying the powder without needing to connect the grounding cable or plug in the gun.  The part is already hot so the powder melts on contact.  Once there is full coverage you put it back into the oven to finish curing.  This method is proven and utilized by many manufacturing companies but there are some other little known tricks to coat materials like glass without having to heat them up before.