Conclusion for thermal process -
This didn't quite work out as I expected. I assume the original panel
was aluminium (aluminum) painted black when in fact it was plastic
coated with black plastic. I then painted the surface white for
contrast. This may have helped the adhesion of the toner to the surface
so I will do another test with bare metal in another log or perhaps
painted metal. It seems to have stuck to the white paint well so perhaps
this was an acceptable test. I will also be creating another log with chemical transfer to plastic.
Log: Toner Transfer decal to plastic (Chemical) - yet to come.