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Building a pontoon boat. Need to join numerous foam billets and cover them with something to reduce surface area. What would you do? Great stuff? EA40? Boat epoxy? Fiberglass tape? Pontoons are each 16’x1’x2’.

I have numerous billets of differing sizes. Thinking of joining them with dowels and epoxy and filling gaps with great stuff. Bonus question… Am I retarded? If so, why?

Building a pontoon boat. Need to join numerous foam billets and cover them with something to reduce surface area. What would you do? Great stuff? EA40? Boat epoxy? Fiberglass tape? Pontoons are each 16’x1’x2’. I have numerous billets of differing sizes. Thinking of joining them with dowels and epoxy and filling gaps with great stuff. Bonus question… Am I retarded? If so, why?

(post is archived)

[–] 2 pts

Can you swim? I mean, just in case.

[–] 3 pts

No. My muscles are too dense. Penis also way too heavy.

[–] 2 pts (edited )

small wooden dowels & glue to join the blocks, carve to shape, fiberglass mat, sand & finish prep, then epoxy gel coat.

The air holes in foam are what make it so buoyant. You don't want to fill them all. Filling the outside layer may be fine. but the foam is never going to be abrasion resistant itself

Decent vid if you've never done your own fiberglass. https://yewtu.be/watch?v=1Kf8IkJJbMw

[–] 1 pt

Personally, I'd use aluminum and form it into a long tube. Weld the seams using a gas tungsten arc welder. Then cut the tubes in half to get two tubes. Then you'll have a good platform to attach a deck. The tubes will have the lowest friction coefficient.

Otherwise, just use polypropylene rope and fasten your flotation devices together like Gilligan's Island would do.

Good luck.

[–] 1 pt

Gotta use what I have. Though I like the idea. And all I have is a stick welder that I use like a 6 year old.

[–] 1 pt

Aluminum welding is not in your future...

[–] 0 pt

Humility is my middle name. Last name, Longshanks.

[–] 1 pt

Are they going inside a protected area, like inside of aluminum pontoons - or just on the underside of the boat or ...?

[–] 0 pt

They are not going to be protected. I’ll probably attach them all to a long 2x6 covered in spar polyurethane. They’ll be on the underside of the boat.

[–] 1 pt

Kind of redneck rigging? If the 2x6 is on the bottom you could bolt it on, effectively using the 2x6 as a clamp to hold the foam piece(s) to the underside of the deck. I'd use big washers on the deck because there is bound to be vibration. Hard to visualize exactly what you are working with.

[–] 0 pt

I have 7 billets of varying lengths all about 1x2.5’. I have 32 linear feet of this styrofoam. Also youthful enthusiasm.

[–] 1 pt

https://youtu.be/MUt2WSXFZ6Q

From a better Era.

[–] 1 pt

i think youll need a frame system to support the weight, and that frame can hold the foam together. plastidip may be an ideal coating

[–] 0 pt

Hell yeah! Plastidip looks like what I’ve been searching for. Considering two part resin, as well, but this stuff looks less pricey

[–] 1 pt

Will this home built floater need to pass an inspection or qualify somehow for a state watercraft tag?

[–] 0 pt

The goal is to make something that qualifies as a boat

[–] 0 pt

Learn to work with fiberglass. I used to repair snowmobile cowlings, it's not that difficult.

[–] 0 pt

Need to join numerous foam billets and cover them with something to reduce surface area.

Wtf does this even mean?

[–] 1 pt

It’s like when you and your boyfriend push the heads of your penises together except a Wiley Smurf shows up and superglues your foreskins. Then he attaches a trolling motor to your nuts and goes bass fishing.

[–] 1 pt

I take it back. Sorry, I was trolling.

With my pontoon boat.

I don't understand how covering something with something else that conforms to the first something will help reduce surface area. Unless I'm retarded.

Happen to have some simple drawings/scribbles of what you're attempting to accomplish?

[–] 1 pt

Foam is covered in tiny holes. I would like to fill those holes, reducing surface area and making the foam more abrasion resistant

[–] [deleted] 1 pt (edited )

I had to ask because, in way of boats, I've never heard anyone say that barnacles are increasing the surface area of their hull, even though, yes, that's what they actually do.

If you want full on abrasion resistance then why not just go with the tried and true fiberglass with a gel coat finish?

[–] 0 pt

Cost. I think.
Though I may land here