I have been 3D printing for about 4 years now and I have always struggled to find a way to smooth PLA filament. After mistakenly spraying Polyurethane on my 3D model, I decided to see if it was thick enough and would dry fast enough to fill in the layers and I'm happy to say that it does! I hope someone out there find this helpful! Thank you for watching and for your support! More fun projects coming soon!

Note: I did print the skull at a layer height of 0.3 which means detail was lost during printing. A height 0.1 would have been better and taken less time to smooth but I needed an extreme layer height to show how much this method can do!

Do read and follow all safety warnings on all spray cans and 3D printers.