Mark, I subscribed, this was very interesting information, I was not aware of the Advance paint.

@markpalmquist

2 жыл бұрын

Benjamin Moore Advance High Gloss.

Mark, could you show a sample of laying up some boat hull parts with your blue and shellac system? I am researching a TriloBoat build and trying to avoid the toxic options is one of the main points. I just am not sure what is an acceptable under-water version of the non-toxic approach. Seems that structural materials would be necessary but I understand that the glue is stronger than the wood in most cases. Just not sure about water proof materials. Good videos, keep it up.

@markpalmquist

3 жыл бұрын

Thanks for your comments. Yes, I will do a video showing the process. Shellac is a natural resin, by the way, just as epoxy is a synthetic resin.

@andymckenzie8031

2 жыл бұрын

@@markpalmquist Thanks! I'm quite interested in seeing how this works, and I'd love to see a video of you using it.

@markpalmquist

2 жыл бұрын

@@andymckenzie8031 I made another video that shows how I made the hulls.

Hi Mark, interesting approach. Great for prototyping and experimentation. I've watched the video a few times and I cant pick out the description of the tape that you are recommending. Is it a paper, a fabric? I guess a paper since you describe the end result as papier mache? I've certainly heard of amateur boat-building with Titebond 3, especially ply over frames and stringers. I'd be interested to know what plywood you use, though I doubt I could get it in the UK.

@markpalmquist

2 жыл бұрын

Hi Tom. I actually made my boat when everything was shut down for 1 month during the initial covid outbreak. So I could not get marine grade plywood even if I had tried. I used underlayment plywood, which I already had on hand. Regarding the tape, this was paper tape made by Sheet Rock brand, same stuff that is used on a sheetrock joint on a wall. Paper is made of wood. Titebond 3 is designed to adhere very strongly to wood and paper. The key is to saturate both sides of the paper to seal it. That way water does not have a chance of getting inside and weakening it, like it would do to cardboard sitting in the rain. The shellac is a great product because it sticks well to Titebond 3 and it can be sanded. Then any marine grade paint would further seal the plywood making it 100% water proof. I used Benjamin Moore Advance High Gloss Interior/Exterior Alkyd Enamel, but any marine paint would work. If you plan on leaving your boat in the water I would upgrade the plywood, but for prototypes and day sailboats which are stored dry, this works well. Best!, Mark

The grey hulls at the beginning of your video look great and simple for catamaran sailboat...any such project?

@markpalmquist

2 жыл бұрын

Those hulls were for an small catamaran which I used to test various propulsion systems, mainly to mimic a dolphin fluke

Hi, here's Christopher from France...to avoid toxicity of fiberglass I've used foam PVC 8mm to build canoes The joints are routed in curve to fit..ziptied and glued ...no need anything else..1 layer of paint for decoration. I used Tinkerer jake free plans for the canoe... PVC is much more bendable than plywood...so it's ok for small boats Bigger boats will require more thickness of PVC... Now I want to build a pvc sailboat , at least 3 passengers, with, if possible free plans...any idea? Greetings from expat in Bangladesh.

@markpalmquist

2 жыл бұрын

Hi Christopher, what kind of glue do you use on the foamed PVC? I worked in the exhibit design field for 7 years and am familiar with the material but am curious about which type of glue you use.

@shantoochristopher1153

2 жыл бұрын

@@markpalmquist Hello Mark, they call it pvc ciment...

@markpalmquist

2 жыл бұрын

@@shantoochristopher1153 oh, that makes sense! I’ve used it on plumbing pipes but not the foamed panels.

So in essence, I could build a foam/plywood boat, and use titebond 3/schillack to hold everything together. Then paint several coats of the super gloss and it will be water impermeable?

@bipedalhominid6815

2 жыл бұрын

Haha good luck with that

@MrWarmachine004

2 жыл бұрын

@@bipedalhominid6815 why so negative? Won’t know until it’s tried, right?

@bipedalhominid6815

2 жыл бұрын

@@MrWarmachine004 it may work for a short time. But industry standards... fiberglass and epoxy

@MrWarmachine004

2 жыл бұрын

@@bipedalhominid6815 not disagreeing with you…it would be more of an experiment than anything. I like the idea and I question the longevity but unless it’s attempted, it’s an opinion (or at best an unsubstantiated hypothesis)

As a boat builder with 40 years experience this is not how you build a damn boat!

@markpalmquist

2 жыл бұрын

Actually I did build a boat this way. It has been on the water 6 times. No leaks. 40 years ago, Titebond III did not exist and neither did water based alkyd enamal paint. If I was going to build a live in the water boat or cross an ocean, I would use epoxy and fiberglass, but not for a small daytime use boat. Also, the Polynesians managed to reach Hawaii with no epoxy and no fiberglass.

@mikebeasley553

2 жыл бұрын

@@markpalmquist the polynesians had to do a lot of bailing I'm sure. I will stick with epoxy glues and polyurethane paint myself.

@markpalmquist

2 жыл бұрын

@@mikebeasley553 I have owned 6 fiberglass boats. My father built 5 fiberglass boats in our garage. They were all heavier than they needed to be. They all leaked in various places where things were bolted on.

@mikebeasley553

2 жыл бұрын

@@markpalmquist All I can say about that is something wasn't done correctly. And you are telling me that the other method doesn't leak where you put holes in it? We routinely bolt things to boats and seal the fasteners with 5200 marine caulk and I guarantee you that it will never leak. I would challenge you to remove the part even when the fasteners are removed. Paper mache boats? You wouldn't even make it out of our inlet. Oregon Inlet. Outer banks of north Carolina. Grave yard of the Atlantic. Research it and the Carolina flare style of boat that has been perfected to tackle these waters. Paper mache boats still had me chuckling! Good luck with that.

@markpalmquist

2 жыл бұрын

@@mikebeasley553 There was an entire company making paper boats at one point. www.duckworksmagazine.com/04/s/excerpts/maib/17/index.htm