Here you can exchange your experience and datas about your home build boards
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SaulOhio
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- Local Beach: Mentor Headlands
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- Favorite Beaches: Kite Point in the Outer Banks
- Gear: Slingshot Turbines, RPMs and SSTs.
Slingshot Misfit 132, Glide.
Home built hydrofoils.
Ozone R1's, 17M, 13M, 10M, 7M
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Postby SaulOhio » Sun Jul 15, 2018 9:13 pm
https://www.facebook.com/saulius.muliol ... 679634741/
I'm using HDPE instead of expanded PVC this time. No more glazing putty and painting the mold. I just have to sand it, and I may not even need a release agent.
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TomW
- Very Frequent Poster
- Posts: 3585
- Joined: Wed Oct 05, 2005 6:43 pm
- Kiting since: 2001
- Local Beach: Vejbystrand, Lomma
- Gear: TW Surfboards hydrofoil board 110
Gong Veloce M, 100cm carbon mast
Ozone Hyperlink V1 7m
Hyperlink V2 9m, 13m
Concept Air Wave 4,5m
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- Location: Sweden
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Postby TomW » Sun Jul 15, 2018 9:34 pm
What machine are you using?
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SaulOhio
- Frequent Poster
- Posts: 467
- Joined: Sun Dec 19, 2010 1:26 pm
- Local Beach: Mentor Headlands
Edgewater
Conneaut harbor
Fairport Harbor
Simms Park
- Favorite Beaches: Kite Point in the Outer Banks
- Gear: Slingshot Turbines, RPMs and SSTs.
Slingshot Misfit 132, Glide.
Home built hydrofoils.
Ozone R1's, 17M, 13M, 10M, 7M
- Brand Affiliation: None
-
Has thanked:
37 times
-
Been thanked:
17 times
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Contact:
Postby SaulOhio » Sun Jul 15, 2018 10:48 pm
TomW wrote: ↑Sun Jul 15, 2018 9:34 pm
What machine are you using?
Inventables X-Carve.
https://www.inventables.com/
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NorCalNomad
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- Gear: Why should it matter?
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Postby NorCalNomad » Mon Jul 16, 2018 2:30 am
Rad! But still use a release agent, you aren't going to be worse off for it, and I've definitely seen epoxy stick to HDPE.
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TomW
- Very Frequent Poster
- Posts: 3585
- Joined: Wed Oct 05, 2005 6:43 pm
- Kiting since: 2001
- Local Beach: Vejbystrand, Lomma
- Gear: TW Surfboards hydrofoil board 110
Gong Veloce M, 100cm carbon mast
Ozone Hyperlink V1 7m
Hyperlink V2 9m, 13m
Concept Air Wave 4,5m
- Brand Affiliation: None
- Location: Sweden
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Has thanked:
53 times
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Been thanked:
193 times
Postby TomW » Mon Jul 16, 2018 2:42 pm
are happy with it ?
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SaulOhio
- Frequent Poster
- Posts: 467
- Joined: Sun Dec 19, 2010 1:26 pm
- Local Beach: Mentor Headlands
Edgewater
Conneaut harbor
Fairport Harbor
Simms Park
- Favorite Beaches: Kite Point in the Outer Banks
- Gear: Slingshot Turbines, RPMs and SSTs.
Slingshot Misfit 132, Glide.
Home built hydrofoils.
Ozone R1's, 17M, 13M, 10M, 7M
- Brand Affiliation: None
-
Has thanked:
37 times
-
Been thanked:
17 times
-
Contact:
Postby SaulOhio » Mon Jul 16, 2018 2:53 pm
Edited
Last edited by
SaulOhio on Mon Jul 16, 2018 2:54 pm, edited 1 time in total.
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SaulOhio
- Frequent Poster
- Posts: 467
- Joined: Sun Dec 19, 2010 1:26 pm
- Local Beach: Mentor Headlands
Edgewater
Conneaut harbor
Fairport Harbor
Simms Park
- Favorite Beaches: Kite Point in the Outer Banks
- Gear: Slingshot Turbines, RPMs and SSTs.
Slingshot Misfit 132, Glide.
Home built hydrofoils.
Ozone R1's, 17M, 13M, 10M, 7M
- Brand Affiliation: None
-
Has thanked:
37 times
-
Been thanked:
17 times
-
Contact:
Postby SaulOhio » Mon Jul 16, 2018 2:54 pm
TomW wrote: ↑Mon Jul 16, 2018 2:42 pm
are happy with it ?
Some little fuzzies stuck to the mold, but otherwise it came out perfect. It just took most of the day. I'm wondering when I'm going to have the time to carve the other side of the mold.
And then the stabilizers. And the mast.
NorCalNomad wrote: ↑Mon Jul 16, 2018 2:30 am
Rad! But still use a release agent, you aren't going to be worse off for it, and I've definitely seen epoxy stick to HDPE.
What kind of release agent would you recommend for West Systems epoxy on HDPE?
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TomW
- Very Frequent Poster
- Posts: 3585
- Joined: Wed Oct 05, 2005 6:43 pm
- Kiting since: 2001
- Local Beach: Vejbystrand, Lomma
- Gear: TW Surfboards hydrofoil board 110
Gong Veloce M, 100cm carbon mast
Ozone Hyperlink V1 7m
Hyperlink V2 9m, 13m
Concept Air Wave 4,5m
- Brand Affiliation: None
- Location: Sweden
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Has thanked:
53 times
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Been thanked:
193 times
Postby TomW » Mon Jul 16, 2018 2:56 pm
NorCal is right. Epoxy can stick to HDPE.
Usually you have to "flame it" to et it to stick, but it might stick anyway.
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rynhardt
- Very Frequent Poster
- Posts: 980
- Joined: Wed Sep 11, 2013 3:51 pm
- Local Beach: Langebaan
- Favorite Beaches: Langebaan
- Style: Freeride
- Gear: Cloud C2 17
Hoff Twinwave
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- Location: Johannesburg, South Africa
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Postby rynhardt » Mon Jul 16, 2018 6:38 pm
A good mould release schedule on a gel coat mould would be 6 layers of carnuba wax (wax on/wax off) and then a layer of pva release agent.
On HDPA you may need less layers of wax.
The pva forms a thin sacrificial skin which dissolves with water when you remove the cured piece - highly recommended if you want to re-use your mould.
You can see me apply this at about 0:27 in the video below.
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SaulOhio
- Frequent Poster
- Posts: 467
- Joined: Sun Dec 19, 2010 1:26 pm
- Local Beach: Mentor Headlands
Edgewater
Conneaut harbor
Fairport Harbor
Simms Park
- Favorite Beaches: Kite Point in the Outer Banks
- Gear: Slingshot Turbines, RPMs and SSTs.
Slingshot Misfit 132, Glide.
Home built hydrofoils.
Ozone R1's, 17M, 13M, 10M, 7M
- Brand Affiliation: None
-
Has thanked:
37 times
-
Been thanked:
17 times
-
Contact:
Postby SaulOhio » Mon Jul 16, 2018 7:17 pm
rynhardt wrote: ↑Mon Jul 16, 2018 6:38 pm
A good mould release schedule on a gel coat mould would be 6 layers of carnuba wax (wax on/wax off) and then a layer of pva release agent.
On HDPA you may need less layers of wax.
The pva forms a thin sacrificial skin which dissolves with water when you remove the cured piece - highly recommended if you want to re-use your mould.
You can see me apply this at about 0:27 in the video below.
I have used PVA. The problem with PVA is its hard to fix mistakes. Any runny spots, or a bubble, or a piece of dust that lands on it is there for good. I like waxes because I can buff out any mistakes.
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