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by GrantL
Fri Sep 08, 2017 8:59 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Thanx for your quick reply. I want to reproduce a wing that I already made by painstakenly shaping the bottom as my male mold has a flat cord top. I do almost exactly inverse as your plug build by using external thin plastic profile templates to shape layed up parts, to much work! I am quite sure t...
by GrantL
Fri Sep 08, 2017 4:48 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Xcelent info thanks! :thumb: :D Would you, could you please explain in detail just how you get your split plate perfectly aligned with plug center PLEASE! I have been semi happy with the few molds I have made but always find L E and more importantly T E to not be as clean as I would like. As you ha...
by GrantL
Mon Sep 04, 2017 1:23 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

multiple layers.jpg
Add multiple layers of laminate to build up thickness. Reinforce lastly same as 1st half
open die.jpg
Wedge open 2 halves with plastic or hardwood wedges to release 2nd half. Remove plug front mold.
2 halves.jpg
2 mold halves, plug removed. Ready for clean and polish of cavity and flanges.
by GrantL
Tue Aug 29, 2017 1:55 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

SECOND SIDE HAND LAYUP.
Laminate outside or with good ventilation. Outside is best with sun. This allows the resin to set off evenly with heat from sun.
gel 2nd side.jpg
Carefully gel coat all over
thin layer .jpg
Split chopped matt laminate in half. Cut pieces to butt up to plug all around
wet out to edge.jpg
Carefully wet out laminate to edge for plug
thin layer 2.jpg
Prepare another thin layer to cover the plug
wet out plug.jpg
Place prepared piece of laminate to go over plug. Wet out completely with roller removing any air bubbles.
Allow 12hrs to dry.
by GrantL
Sun Aug 27, 2017 7:35 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build18

waxed 1st half mold.jpg
Waxed and ready for 2nd side
Pinot helps with waxing application
by GrantL
Sat Aug 26, 2017 6:15 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Mold with reinforcing .jpg
5-6mm chopped matt mold with structural stiffness to stop mold twisting
1st half done .jpg
Mold removed from split plate. Flanges light wet sand with 800. Wing cavity as laminated. Ready for waxing for 2nd half
by GrantL
Fri Aug 25, 2017 7:20 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Thanks Grant That would be really awesome. Leo Here is the first part of the process for making a mold plug.jpg frame .jpg build split plate .jpg setting on centerline .jpg split plate.jpg polished side 1 split plate .jpg tooling gel side1.jpg Here is the step-by-step process to build your mold. Th...
by GrantL
Thu Aug 03, 2017 9:28 pm
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Great work! How did you make the molds? Leo Standard old school mold 1/Make a plug (dummy wing) 2/Gel coat plug and split center plate. So basically half the wing and yet to be created flanges on split plate . 3/Build up on top of gel coat with chopped mat lamination to thickness of around 6mm. 4/R...
by GrantL
Thu Aug 03, 2017 1:33 am
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Great work! How did you make the molds? Leo Standard old school mold 1/Make a plug (dummy wing) 2/Gel coat plug and split center plate. So basically half the wing and yet to be created flanges on split plate . 3/Build up on top of gel coat with chopped mat lamination to thickness of around 6mm. 4/R...
by GrantL
Tue Jul 18, 2017 7:57 pm
Forum: Hydrofoil Builders
Topic: Front Wing design and build1
Replies: 30
Views: 6903

Re: Front Wing design and build1

Very nice indeed. Guessing there's a bit of sanding required on the inside mating surfaces, especially the insides of the trailing edge, before joining the two halves? No I don't sand at all. Carbon dust is not good. What I do instead is scrap the carbon carefully back to part line with a tungsten ...

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