CPO restored 
removed sig burn then polishing , looks brand new 
I want to restore the CPO of Moon crest and Vanguard this weekend. Robin, the Vanguard CPO is not really flat, it has a curve because of the heat of cigarettes. I guess that I first have to flatten it before sanding them. What is the best way to flatten them? A heat gun (hair dryer) and sandwhich the CPO between to pieces of wood?
And what type of polishing disc is best to use on a simple drill? (boormachine)