After Having experimented in Making Perfectly Smooth Surfaces for about a Year now within the Print Process itself, Its time I Capitulate and start putting in some more Work and Sand it all smooth!
Just a bit of an Issue… Whenever I sand Coloured PETG, it looses its Colour and turns into that Broken Plastic White.
As someone who hasn’t had to Fix something like that before, I’m not sure where to even start Fixing this? Can it be Avoided in the Sanding Process, or can the Colour be Regained afterwards?
I have heard of People Treating it with Heat and Vasaline to get the Colour Back, what kind of Methods do you all use and how reliable are they?


I’ve polished to a practically mirror shine with progressively finer and finer grit sandpaper. Took an eternity. Worked for the purple I was using, but it might not work for all colours.
I’ve also tried heating PETG with a butane lighter out of pure frustration. It does work, but the line between restoring the surface finish and deforming the print is very thin.
I see, thats quite interessting… I do wonder since my Main Concern are Flat Top Surfaces, if putting the rough Print surface on a Heated Surface of Sorts would do something simular? Thinking like a Heated Pan or Metal Sheet?