Re: Project: Longboard

hey chuck, what you can do is paste the IMG code instead so the pictures will show straight forward... nice to meet you again after awhile, welcome to pinoyhandyman...
btw, nice looking boards....

Re: Project: Longboard

Next: My brother helped me out route the slots for the aluminum support for the cut hole.
i placed aluminum flat bars in both sides for support because having a cut hole in the center of the board isn't really normal, and it was a potential breakpoint.

After Sanding the board, it was time to apply fiberglass. I placed 4 layers of woven matt fiber and r10 - 60 resin. for extra strength since i used only plywood.

Re: Project: Longboard

It is not finally done yet hehe it needs some graphics and final glassing 🙂

i Already tried it.. The ride is sweet..Hehe

Re: Project: Longboard

i wanted a hole in the middle of the board so i could carry the board easier. i used the jigsaw and the scroll saw to cut the board.

what scrollsaw? hmmmm, may secreto yata kayong magkapatid... hehehehe

Re: Project: Longboard

Welcome DrillChuck. Nice project you have there. I used to skate a long long time ago so I have some appreciation of this project of yours.

I'd like to suggest you try using the structural fiberglasses, and epoxy resin. Roving matt is really not very good for your purpose. Best would be unidirectional fiberglass but Polymer does not carry it (yet). You could try biaxial 45/45 fiberglass or maybe their 0/90 biax. You could also use woven cloth (WCL 200) but I would still recommend biax. Epoxy is definitely far superior to the polyester that you used. It is more expensive however you won't regret it.. It bonds better to plywood too.

Where do you ride your boards? I guess these are for riding down a long slope?

Re: Project: Longboard

what scrollsaw? hmmmm, may secreto yata kayong magkapatid... hehehehe

Hehehe! no secrets..if you see one of the pics above in the background that's where my brother works.. lots of powertools!

Re: Project: Longboard

@ lncc63

Hi there..thanks 🙂 its cool that i aint the only one who likes longboards here hehe...i skate around makati lang..mostly in our village.

When you say biaxial 45/45 fiberglass & 0/90 biax thats the fiber mat right? and is it available here in MNL?

i used WCL 200 on the board i made..hehe the woven roving cloth was too thick nga..

Eproxy resin..i heard of that na din..i think they use that now on surfboards too.. in polymer they sell it.. its called laminating epoxy set in A & B. is that the one i can use for my boards? and is it the same application as normal resin?

Thanks lncc63

Re: Project: Longboard

@Timber

what scrollsaw? hmmmm, may secreto yata kayong magkapatid... hehehehe

Hey timber..Haha i wish we had a scrollsaw here at home... haha i used the scroll saw in the workshop where i work. 🙂 ill post pics of the workshop in Lasalle soon 🙂

Re: Project: Longboard

Well ... my skating was about 30 years ago.

Yes, the biax is available at Polymer too. Don't be discourage if you are buying from a branch of Polymer and they do not know about these, this happens. The main office is not far from you. What you really need for this kind of project is "unidirectional" fiberglass. You could also try carbon fiber :).

Yes, "laminating epoxy" is the one you need. The application is more or less than same although there are a few differences. First, you mix by precise ratios: 1 part hardener to 2 parts resin. Second, is that you only have about 30-45 minutes to get the epoxy on. Third, it is significantly more expensive than polyester at about P2k per gallon.

There are quite a few "laminating" epoxies out there but you won't find them at the hardware stores. You'll have to call the manufacturers themselves but don't worry they do sell even just 1 gallon. If you'd like to know who the other manufacturers are, please visit the PHYBC website. Polymer's is a good epoxy to start with though.

Re: Project: Longboard

@ lncc63

Thanks for the info:)

Um Carbon application is just the same as using the normal Fibermat right? i know using ovens and vacuum bagging does a better job with carbon fiber but i just want to know if you can use the normal brush on or spray on resin with the carbon fiber mat..and does it use the same resin?

the Epoxy resin is a must try..ill try it soon when i have the means na hehe ill prolly make a skim board with that.

ow and Sir Do you know any supplier who sells ABS FOAM or Hi density Polyurethane Foam? 🙂 like the ones they use for Surfboards

Thanks 🙂

Re: Project: Longboard

You're most welcome bro. The way I understand it you can use almost any resin with these reinforcing fibers as long as there are not incompatibilities. An example of an incompatibility is using epoxy with fiberglass roving mat. The problem here is that the binder used in fiberglass mat is intended to be dissolved by something in a polyester resin which is not present in epoxy resins, and the undissolved binder causes problems. WLC200 and their structural fiberglasses do not have this problem.

I don't have a lot of experience with carbon fiber but I'm sure you can brush it on. One problem is that it is more difficult to tell if you are doing a good job because its color. Fiberglass turns nearly transparent once saturated with resin, carbon fiber does not. I think the way to go is to mix the amount of resin based on the the weight of the carbon, and to err on the high side. Note though that the resulting strength decreases with increasing amounts of resin. This is one of the major reasons why vacuum bagging is a good way to go - it will remove all the excess resin.

You can buy foam at Polymer too. They sell pre-expanded boards as well as the unmixed components.