|Special Forces trooper|
Paul's tip for the day - my usual working surface is an A4 cutting board inside a punched pocket. It provides a shiny surface which cleans very easily - using washers as bases, the epoxy resin often oozes through the hole onto the working surface but it easily peels/pops off once it has set. The putty also comes off easily as does paint. When it finally gets too scuffed you can just chuck it away and slip the cutting board into a new one.