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!