Being a boat builder I can guarantee that you just built the strongest board you've ever built.

@kobymaymonsurfboards7320

2 жыл бұрын

Good to know 🤣🤙🏼🙌🏽

Looks so good!

@kobymaymonsurfboards7320

3 жыл бұрын

Thanks! Wait for the next part! Coming up soon 🤙🏼

Just found your video. Watching in Western Australia. I have only shaped one board so far. In the future I want to vaccumn bag and XPS surfboard. Going to watch the next video. Keep shaping!

@kobymaymonsurfboards7320

3 жыл бұрын

Thanks 🙌🏽

I am in the process of building a part, and it's around 5"x5", the peel-ply got stuck to it and I can't get it off. The fact that yours came off so smoothly even around the edges is amazing.

@kobymaymonsurfboards7320

9 ай бұрын

I wonder why it got stuck- shouldn't happened 🤷🏻‍♂️

Congratulations bro🤙🏄

@kobymaymonsurfboards7320

3 жыл бұрын

Thanks 🤙🏼

Thank you for sharing

@kobymaymonsurfboards7320

3 жыл бұрын

you are welcome!

Maybe rolling the dry peel ply onto a cardboard tube first and then unrolling it into the wet carbon? Or wetting up through the peel ply?

@kobymaymonsurfboards7320

3 жыл бұрын

For sure will help to get better results but also to have better pump to hold it firmly against the carbon

@wardhagaman3139

3 жыл бұрын

@@kobymaymonsurfboards7320 most of those pumps should be able to pull 25” of mercury...should be enough, no? I wonder if you were getting too many leaks? I do smaller stuff like model airplane wings (so maybe easier for me) and I just use cheap $3 latex caulk and new poly drop cloth...no bag fittings or clips and there are no leaks that way. You just fold over the poly sheeting, lay the pvc hose in there and seal 3 sides with a caulking gun. Might be worth a try? Thanks for taking the time to post your videos...I really enjoyed them!

Did you notice any flattening or twisting of the rocker while under vacuum? I’ve done a few boards with vacuum infusion. They’ve all been stringerless, so I did a hand lay up of carbon on the rails before I put them in a bag to infuse them to prevent any warpage. Would be cool if I could skip that step...

@kobymaymonsurfboards7320

3 жыл бұрын

No, but i had not the best pump.... so not sure about stronger ones 🤙🏼

Nice vid Koby! What carbon cloth are you using? Looking forward to see the next vid. Thanks for sharing

@kobymaymonsurfboards7320

3 жыл бұрын

Hi, thanks! 3k Carbon (about 180gr = 5.7OZ if i am not mistaken)

@GrantOakes

2 жыл бұрын

@@kobymaymonsurfboards7320 That's a very common weight to use. It looks like a plain weave, you might try using a 2x2 twill next time to give it that "traditional" carbon fiber look, plus it conforms to curves much better. Oh, and use a squeegee on the peel ply as well to avoid voids.

Looks worthwhile! Would you consider using COLAN again, or mentioning specifics of the cloth in upcoming videos/add in the video description? I know you've answered people separately, already. What would you estimate the rough outlay for equipment was; pump, bag, and difference in expense for cloth? Your setup looks sweet!

@kobymaymonsurfboards7320

3 жыл бұрын

Colan is great, never disappoints. I would say the total expenses was double the normal board, the pump is expensive but it was borrowed... if normal fiberglass cost 5$ meter the carbon cost 60$ and this the biggest difference 🤙🏼

Thank you to show this process. At 4 mn 03 sd, you cut across the weave lap...are you obliged to do that because this make lose a lot of strengh in the rail acting as a beam?

@kobymaymonsurfboards7320

3 жыл бұрын

I make sure that the 2 sides are sitting on top of the other, the cut is under the rail, I had to do that as the carbon doesn't like to wrap as normal fiberglass, I do not think that I lose any strength in the board..

@kamilacanau

3 жыл бұрын

@@kobymaymonsurfboards7320 Will you do the same kind of cut when doing deck bagging? I think it can be done if the upper cut is not in front of the lower one already done. Should have the longest overlapping ( in lengh direction ) as possible. Thanks again to share the next bagging step, I'm staying tune after that :-)

@kobymaymonsurfboards7320

3 жыл бұрын

@@kamilacanau The next video will be up soon - I did it on the top as well but it looks and feels great!

Hi Koby, great work, what is the pot life of your epoxy?

@kobymaymonsurfboards7320

2 жыл бұрын

Summer time 15 min and i have to wrap the rails, winter about 20min If i leave it in the pot mixed for 3min it will get crazy hot and not useable

@6to6surf4

2 жыл бұрын

@@kobymaymonsurfboards7320 thanks!

Very great project. How much resin and carbon fiber used?

@kobymaymonsurfboards7320

2 жыл бұрын

Same as always, 1 layer of carbon bottom and 1 layer on top + 4oz normal fiber. Resin- 100gr per 1ft 🤙🏼

Question....do you prefer epoxy boards or pu?

what kind of carbon fibre do you use ? the weave type and weight ? nice work!

@kobymaymonsurfboards7320

3 жыл бұрын

It is plain weave, 187gr (5.7oz) , it was very easy to work with- good quality 🤙🏼

@harryclayton3339

3 жыл бұрын

@@kobymaymonsurfboards7320 cheers koby!

Hi Koby! which resin did you use? i normally use Kwick Kick as you do with normal layups but for my upcoming vacbag boards i have bought some slow epoxy (not resin research but normal epoxy) to make sure i have a lot of time to work and that the excess resin will still come out of the cloth instead of already being to firm.

@kobymaymonsurfboards7320

2 жыл бұрын

Sounds like the right move, let me know how it turned out 🤙🏼

@alexanderschuit5340

2 жыл бұрын

@@kobymaymonsurfboards7320 thanks!! i JUST now received the eps stringerless blanks i ordered. over here me rate eps by EPS 100, EPS 150 Or EPS 200.. the blank was from france and was rated 20kg/m3. i assumed this would be EPS 200 but it feels definitely softer, and lighter. i think i will add an extra stomp-patch of 4oz under the carbon where the feet go. maybe HD foam inserts for the boxes.. which density EPS did you use?

@kobymaymonsurfboards7320

2 жыл бұрын

@@alexanderschuit5340 20kg is great, the 4oz on the deck is smart- you can see i do that will all my carbon boards

@alexanderschuit5340

2 жыл бұрын

@@kobymaymonsurfboards7320 hi Koby, some research in converting, and consulting with experienced shapers learned me that 20kg/m3 is 1.25 lb EPS, which seems way too soft. 1.5lbs could be done but 2 lbs seems to be the consensus to be the minimum for a durable board, which would be 35 kg/m3. so i am selling this foam to someone who wants to do a sandwich construction

@kobymaymonsurfboards7320

2 жыл бұрын

@@alexanderschuit5340 i have no problem with 2lb as the carbon wrap is super strong and stiff

What would you have done different to get a cleaner finish?

@kobymaymonsurfboards7320

3 жыл бұрын

You will see in the next video, I spent more time on laying the peel ply with the squeegee and make sure i had a better vacuum pressure 🤙🏼

maybe whit a scotch paper line on the deck ,before lamination should be better, but great job... anyway

@kobymaymonsurfboards7320

2 жыл бұрын

Thanks 🙏🏽

Great job! What vacuum pressure (Hg") did you use to keep from squeezing too much resin out of the carbon fiber?

@kobymaymonsurfboards7320

3 жыл бұрын

Not sure, the pump was not great, i think about 8 psi

Hello, Nice video how many liter per min is your vaccum pump ? Have how many psi do you need to vaccum a surfboard ?

@kobymaymonsurfboards7320

9 ай бұрын

Hi I just got the Mirka one, not sure what the specs are but it is great 🤙🏼

In the description it says you used 3 lb core. Do you know what type of material the foam core is made of?

@kobymaymonsurfboards7320

2 жыл бұрын

EPS - that’s what I always use. Carbon boards i use 2LB and normal epoxy i use 3Lb

hello my friend on carbon kids two topics plus one of them is peel ply. what is the name of the other? I would like to make a surfboard with that technique. thank you so much

@kobymaymonsurfboards7320

Жыл бұрын

Breather cloth 🙏🏽

@christianponce3591

Жыл бұрын

Thanks a lot my friend

Did you seal the foam before hand?

@kobymaymonsurfboards7320

3 жыл бұрын

With the carbon- i did not, normal boards - 100% yes

Hya cobi can u help Mee to know how can I find the vaccim sistem or where I can buy it

@kobymaymonsurfboards7320

Жыл бұрын

You need vacuum pump (it is the same as air conditioning guys uses) and the bag you make alone. Be creative with it and search online for more info 🤙🏼

What was the weight of the carbon fiber cloth?

@kobymaymonsurfboards7320

Жыл бұрын

200gr

did you leave the vacuum pump on for 24 hours?

@kobymaymonsurfboards7320

2 жыл бұрын

2.5h is the cure time for my epoxy so i can turn off at this time, i peel it a bit later to give it more cure but there is no need for the vacuum

Where are you from?

@kobymaymonsurfboards7320

Жыл бұрын

Beautiful Israel 🇮🇱

why even vaccum it?

You lost vacuum during curing...

Carbon fiber makes the board look nice but the board will be too stiff no flex, I built boards like that .

@kobymaymonsurfboards7320

Жыл бұрын

I love this feeling when surfing small waves that we have here in Israel 🤙🏼

אתה ישראלי

@kobymaymonsurfboards7320

Жыл бұрын

נכון 😎

Why did you suck the air out of it with that bag on it? Seemed like a pointless addition to the process. Just glass the two layers of carbon and fiberglass then do the other side..

@kobymaymonsurfboards7320

3 жыл бұрын

Not sure what you mean, it not just sucking the air out-it has a peel ply and a breather cloth on it, we sucking the air out to get the access resin out and to have the ultimate bond for the carbon to the foam, the result is super strong and light. the board turned out great, light, and strong but also with perfect glassing due to the vacuum bagging technique.

@countryroadstakemehome

3 жыл бұрын

@@kobymaymonsurfboards7320 Oh okay, where have you seen this done? It's the first time i've ever seen that done before.. Yeah it looks like a great board. What do you think about this guys technique opposed to yours? kzread.info/dash/bejne/q3dt05iok6iamaQ.html

@kobymaymonsurfboards7320

3 жыл бұрын

@@countryroadstakemehome cool video, a nice way to build it and more simple. there is more than 1 way to build a board, his way will be heavier and not as professional as I do it. when building a hi-performance shortboard it matters. what I do is inspired by Dark Arts Surfboard and with all the research I have done this is the best way to build 2LB surfboards that is super light, fast, and durable. hope it helped!

@greg.ocallaghan

2 жыл бұрын

@@kobymaymonsurfboards7320 any links to the full process? About 10 yrs ago I built around 12 surfboards, normal epoxy glass hand layup with EPS cores, but want to get back into it again, with carbon and vacuum bag this time, for foil boards. Any links to a guide of the full process, much appreciated! loved your video 🤙

@kobymaymonsurfboards7320

2 жыл бұрын

@@greg.ocallaghan not at this point, however I advise you not to use vacuum, you can do normal glass and it is just fine 🤙🏼