how do you remove epoxy from monocoat once it is cured?

Heat it up with your monocoat iron and scrape it off with a credit card, wipe the remaining off with lacquer thinner.

thanks I'll give it a try.

I mixed red dyw with epoxy in order to hide a glue seem and when first applied it looked perfect. But when it dried the epoxy reacted with the dye and it turned purple. There ain't much I can do now.

The red/purple epoxy that I got on the monocoat was not visible until it turned purple.