Rebar Epoxy Removal

To remove the epoxy from the rebar I heated it in the burnout oven.   Checked back and it was smoking and stinking so I turned it off.  And neglected to notice the temperature.  After cooling I found this.

It seems the metal expanded and cracked off the epoxy.  The bottom of the oven contains bits of broken epoxy and its still green.

I am thinking one might be able to do this in a toaster oven and keep the temperature down so the epoxy does not burn.

Need to give it a try.