Firstly I am not a professional. I am a hobbyist that has been playing around with carbonfiber. For the last 1.5 years I have been trying to find a workflow for my 3d printed mold process that can promise great results. I have tried various things and this is so far my best approach with best consistent results.

This lenghty video tutorial shares my process from A-Z. No secrets, nothing special, just steps I take to get to the finish line to allow myself to have a mold that has a decent surface but is air tight and works perfect for vacuum infusion process.

0:00-4:20 - Intro & Sanding First Layer
0:21-4:33 - Washing The Mold
4:34-10:40 - Coating First Layer of Resin
10:41-12:11 - Sanding First Layer of Resin
12:12-14:46 - Coating Second Layer of Resin
14:47-16:43 - Sanding Second Layer of Resin
16:44-18:15 - Sanding First Coat of Primer
18:16-19:07 - Sanding Second Coat of Primer
19:08-20:29 - Comments and Concerns on the mold
20:30-21:12 - Polishg Part and Final Comments