G10 Fins

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Joined: Mar 18 2004
Posts: 642
Points: 621

G10 Fins

After drooling over GregGriffin's g10 fins,I decided to order a sheet to make some fins for myself.  No wonder his fins are so sweet - a blind monkey could foil this stuff sharp enough to fillet a fish!  Seriously you should try some for your next board - it seems kind of pricey but you can get a 12"x24" 1/4" sheet for about $60 and that will net 3 sets of fins so for the price of one set of fiberglass fins from the surf shop - you can have three that you made yourself!  Just google g10 frp4 fiberglass sheets.  After doing some wooden fins and some fiberglass fins from panels I layed up myself from 6oz, this g10 was really a treat to foil!

Here's a couple tips I used for these:

Get the grit blade for your jigsaw to cut this stuff out - i got one from greenlight for like 5 bucks!

After cutting out the fin template, tape up the flat sides of the fins and spray over the tape with adhesive then stick the fins together and foil.  The tape will show a centerline to work towards and it will make unsticking the fins easier and you will not have to sand the flat side to get any adhesive off - just peel off the tape.  This method helps to keep your fins symetrical.

keel fin

g10 keel fin

keelfin foil

keel fin fish

Joined: May 23 2007
Posts: 1315
Points: 583

Re: [grasshopper] G10 Fins

Nice Job grasshopper,

Just did these G-10 Kiteboard fins for ProBox. This one is the Ninja Kite Quad, 8" front fins with 6" back fins.

Mahalo,Larry

www.ProBox-Larry.Blogspot.com

Kite Fins 012.jpgKite Fins 011.jpg
Joined: May 23 2007
Posts: 1315
Points: 583

Re: [grasshopper] G10 Fins

Joined: Dec 18 2007
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Points: 1754

Re: [Probox-Larry] G10 Fins

For the sake of humanity...get together with Greg, please.

YOU ARE LEAVING MONEY ON THE TABLE.

Joined: Mar 18 2004
Posts: 642
Points: 621

Re: [grasshopper] G10 Fins

those are some crazy fins!  they must be for racing kiteboards?  Do you have to putt extra reinforcements to keep those boxes from pulling out with such a long fin? are they 1/4" all the way through or do you have thicker stock and grind down for the base tab?

Joined: Jun 9 2004
Posts: 3537
Points: 1232

Re: [grasshopper] G10 Fins

what did you think of the smell?

pretty unique isn't it?

wondering if its toxic..

Joined: Mar 18 2004
Posts: 1178
Points: 841

Re: [grasshopper] G10 Fins

"what did you think of the smell?

pretty unique isn't it?

wondering if its toxic.."

I'd wager that it isn't good for you! I love the way the stuff foils, you can see each individual layer way better than I thought you would. Grasshopper's absolutely right about the grit saw, only way to fly. I burned up two or three metal cutting blades before I made the switch. Making tight bends with the metal blades would make the G10 turn black and start smoking, now talk about toxic! That shit's nasty!!!

Joined: Nov 21 2006
Posts: 930
Points: 780

Re: [grasshopper] G10 Fins

grasshopper wrote:

After cutting out the fin template, tape up the flat sides of the fins and spray over the tape with adhesive then stick the fins together and foil.  The tape will show a centerline to work towards and it will make unsticking the fins easier and you will not have to sand the flat side to get any adhesive off - just peel off the tape.  This method helps to keep your fins symetrical.

I sprayed Super 77 directly on the G10 and it was a little challenging to get the goop off afterwards.  Putting tape on the fins before spraying is a good tip.

It did smell a little funky.  I definitly recommend wearing a good respirator.  Sanding G10 is super dusty.

Joined: Nov 14 2007
Posts: 130
Points: 165

Re: [grasshopper] G10 Fins

I typically use the double sided carpet tape to hold 2 sheets together for cutting and shaping.HD has that tape for pretty cheap.

HTH..

going right!

Joined: Mar 23 2008
Posts: 955
Points: 676

Re: [Probox-Larry] G10 Fins

Probox-Larry wrote:

Here's another Kiteboard set-up called the Synergy Kite Quads.

Hey Larry!

Thanks again for translating my template into a kiteboard fin! It was an unexpected treat!

I never thought I would have my own kiteboard fin.

Now...how do those things work? LOL

Todd Patterson
ECO BoardWorks...Helping keep the BLUE planet GREEN

Joined: May 23 2007
Posts: 1315
Points: 583

Re: [grasshopper] G10 Fins

grasshopper wrote:

those are some crazy fins!  they must be for racing kiteboards?  Do you have to putt extra reinforcements to keep those boxes from pulling out with such a long fin? are they 1/4" all the way through or do you have thicker stock and grind down for the base tab?

Yes grasshopper, The racing kiteboard ProBox area was reinforced with carbon inlay into high density foam. I cut the tab to full length inside the box to transfer some of the base load up. I got .312 thickness and milled to .251, G-10 varies in thickness so stock .250 isn't that most of the time, it's a few thousand thinner. These fins have no tip flex. Double foil on all 4 fins with the leading edge foil pulled back about 40 percent for speed.

Mahalo,Larry

www.ProBox-Larry.Blogspot.com

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