A simple process using spot putty to achieve a smooth surface for you 3D prints.
In 3 simple steps you can get great results. Initial sanding, apply putty and sand, paint.

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Chapters:
Intro: 0:00

Test on complex model
Initial Sanding: 1:28
Applying Putty: 2:50
Sanding Putty: 4:30
Paint: 7:09
Final: 9:33
Test on Simple Dome: 9:42

Visit my amazon store for a list of products I've used in builds
https://amzn.to/3vvFOP2

Items used in this build:

Spot Putty: https://amzn.to/3439qGd
SandPaper: https://amzn.to/3uh4W9B
Popsicle sticks: https://amzn.to/32RjIZp
AirBrush Paint: https://amzn.to/3gdrnUZ
Brush Paint: https://amzn.to/3sagPeL
Clear Coat: https://amzn.to/3J0vW1h

Music from www.BenSound.com