DIY Carbon Fiber Freediving Fins by Vacuum Infusion Build

I've always been interested in building my own gear and composites are one area that I had very little experience with. So I took the time to research the Vacuum Infusion process for Carbon Fiber so take a look at my first go! Of course if you can think of some improvements please comment below. If you want any more description on the process also comment.
Material Sources: (no affiliations)
compositeenvisions.com
Reinforcements:
- Carbon Fiber Fabric UNI Directional Intermediate Modulus 12k 5.7oz/193gsm Hexcel IM2
- Hexcel HiMax Carbon Fiber Fabric Biaxial +45/-45 Degree 12k 2.95oz/100gsm T700 Fiber
- Carbon Fiber Fabric 2x2 Twill Intermediate Modulus 6k 205gsm/6oz Hexcel IM7
Resin:
- RDR-3121 RDH-9386-99 High Impact/High Temp Vacuum Infusion Epoxy 3:1 1.33 Gallon Kit 325° F - 1 hour Pot Life - Kit Size 1.33 Gallon
Consumables:
- Airtech AT200Y Tacky Tape (yellow gum tape)
- Airtech Wrightlon® WL5400 Nylon Vacuum Bagging Film 60" 0.002" (clear film)
- Airtech Bleeder Lease B Coated Peel Ply (green material)
- Airtech Resinflow 60 Resin Flow 60" (red mesh material)
local glass shop
- 1/4" tempered glass
amazon for cheap vacuum stuff
TV Box Cardboard
"Milkman Space Heater" with my own temp control mod SSR with control unit
Processes not shown:
R&D - look at what's out there on TH-cam and get an idea for the process
www.easycomposites.co.uk had the best tutorials
hardest part was getting a feel for the right flex on the blade.
Ended up modeling a few builds that I saw on TH-cam and modeling them on ANSYS ACP PRE/POST student addition (another big learning curve) and coming up with a 20N force at a 90 degree bend metric that was the target for a mid flex medium stiffness blade at 29 degree angle. I can make a video on that whole process if you would like. May do some fluid modeling of a flexible foil on ANSYS if I get really ambitious.

[@Macumim93]

Friend, you were the only person on TH-cam who had the patience to explain the step-by-step process of making carbon fiber diving fins. The freediving world is grateful for your overwhelming generosity. Success! When you come to Brazil, you have a guaranteed place and diving.

[@Macumim93]

🇧🇷

[@7hreebroes]

Thank you for the kind words, I’m glad you enjoyed it

[@ALBERTO-dp6iz]

Good job! I make them too. Can I ask you what grams of fabric you used? Thank you😀 @three brothers

[@7hreebroes]

I used 200g twill, 200g uni and 100g biax, I’ll try and get the exact materials up on the description in a bit. Thanks!

[@morfeuss85]

on the down side, did you apply epoxy or does it still have the peel ply texture? What resin did you use, epoxy?

[@7hreebroes]

I left the peel ply texture for that iteration. I’m using rdr 3121 epoxy, actually all of the exact materials I use are listed in the description of the long form video. What’s your opinion of the peel ply texture?