HOW TO MAKE STRINGERS and TRANSOMS with PLYWOOD and EPOXY

Let's take some of the Mystery out of working with Epoxy! Using thickened epoxy to bond plywood, Coosa board, or other composites together is a great way to build or replace your stringers, transoms or floors in your boat or other projects! Let's us show you some of our favorite methods and techniques for working with epoxy. We have learned these epoxy tips and tricks over the years in our family's boat shop building hundreds of boats and doing thousands of repair jobs. Epoxy work doesn't have to be difficult, this video is made for the DIYer, but will yield professional level results. So, sit back, and enjoy as we bond some stuff together and experience some EPOXY MADNESS!! If You find this video helpful, please consider liking, sharing, commenting, and subscribing to the channel. Thanks for watching!
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[@FishBumpTV]

We have made Patreon (

[@hecdc7703]

Great video. Bonding plywood with West System and then glassing with polyester resin makes a strong stout build. I've used that method for over 40 years on a lot of DIY boat projects.

[@jeromefirlik8100]

Just a little technical clarification; vinyl- and polyester resins use a catalyst; the amount of catalyst can vary depending on how fast you want the reaction ; the catalyst isn’t consumed in the reaction, it just causes the curing reaction . With epoxy, the resin and hardener are both consumed and therefore have to be mixed in the exact ratio given by the supplier. For example, adding a little extra hardener won’t speed up the reaction , it will just weaken the structure since the cured epoxy will have excess uncured hardener in it (forever)

[@Andrew-lk5ov]

Yet, another excellent video!! Another poster has mentioned your choice of filler material -- while I really prefer either 404 or 406 for stringers and other less visible higher stress joints and 405 or 407 for cosmetic applications, you may want to elaborate on why you chose particular fillers for your different applications. Spoons and rounded paint sticks can make good fillets if you take the cheaper route! I also applaud your use of a zip lock for laying down fillet material -- they work well for filling deviled eggs too!🙂

[@arntsaet95]

Thank you very much. I am a educated boatbuilder in Norway. Working at a boatyard/boatworks. I am mostly building large fastferries of carbonfibre and glassfibre, with polyester and vinylester products. Been working with epoxy very rare. Right now I am rebuilding a small fishingboat 12m Long. Extending the hull 1 metre and make it wider in the Stern. The hull is curved from the middle and the Stern is 1,2 m less with than midship original. I love to watch your content and love the oldschool metods. Proper way to do it! And the strongest lasting metods you use over there. This means a lot for me. Allways New stuff to learn Even if I have 15 years experience 👍😁

[@louisramos4290]

Why not add filler until epoxy is at desired thickness so don't add too much? Imagine that you knew how much filler to add from years of experience ,but believe for a beginner my suggested technique is basically the same intent and safer.

[@scoutt73]

I dont mind the long video that u make because you go through everything step-by-step & explain everything in detail and that's awesome. I'm replacing my transom, engine stringers, floor stringer & floor in my 19 ft. ski boat and have never done this kid of work before and i have learned so much from your video on the right way to do things. We are all lucky to have you in our corner. Thank you

[@dreed7312]

Definitely interested in good places to buy supplies, and talks about how much of different things might be needed. Abrasives would be another good topic. Where's the best place to find sandpaper? That's often where project costs get out of control -Paper towels, popcorn cups, sandpaper, etc.

[@donaldmatthews7572]

Thank you, that was educational. You appear to be a journeyman in fiberglass work, and it shows.

[@jimsiggy]

Joe, thanks for the informative videos. I'm curious, is it possible/feasible to fabricate decks and other structural features with fiberglass and foam, rather than say plywood, for the sake of saving weight? If so, could you demonstrate/compare? Thanks.

[@hubertanderson7044]

I do that when lm grouting tile in corners I use a cheap ziplock bag

[@jamestim319]

You’re probably the #1 fibreglass KZbinr right now!! Thanks for the amazing vids bud!!! Greetings from Spain!

[@christopherbowersdresser4188]

takes me back to the old days, i miss it. never used a filleting ball for filler...messy but no matter how you hold it the radius is consistent. i only used the ball for fillet wax when trying to add tolerance to a part, like adding a 1/4" gap between console and gunwale. i stumbled on your chanel a few days ago and i really dig it man. id venture to say not many people have seen what you are showing. i was fortunate to grow up in a boat town (multiple big mfg's) i commend you on your 29 brother, i know first hand the gruely never ending work to produce all the plugs, then molds, production mfg methods.

[@TEXASHANDYMANSVCS]

Awesome video! Thank you.

[@michaelwade3074]

Thank you Joe. It's great to have the benefit of your experience. I have been waiting for this epoxy video because, as you say, there are a lot of people giving advice who probably have only done it once or twice themselves and the West Systems epoxy is what many home builders are recommended to build with. Great video.

[@unknownspectre]

I don't build or repair boats... Heck, I've only ever been on a boat maybe 5x in my life! But, I'm here to learn this information to use it for hi-fi soeaker building. The info in this series is far more in depth and succinct than any of the speaker builder videos I've come across. Cheers!

[@hansposselt2096]

Thank you for great video. I am learning. Greetings from Denmark

[@rohancastanheiro5056]

As a boat owner I appreciate your videos..Will certainly share them with my guys here in Jamaica..Big up and bless up

[@randyg6231]

Another great Video !! Thank You For helping out the DIY people !! I live very rural and don't have any place with in 60 miles to work on my boat, so kinda have to do as much as I can myself so these instructional videos are a big time and money saver !! Thanks Again for sharing your knowledge with us !!

[@scoutt73]

I love the tip about not leave the mixed epoxy in the cup and spread it out on a board to keep it from heating up and setting up in the cup, great tip cause i have left it in the mixing cup and it get really hot fast like u explained.