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Lovako
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Ply Construction
16 Replies

I’m in need of info concerning the building of a center box between beams 2 and 3 on a Pahi 42ft. It is not about building of the box, but that of material used.My old one needs to be rebuilt because…Continue

Started this discussion. Last reply by Roger Jan 10.

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Roger replied to Lovako's discussion Ply Construction
"I know from my own projects that 6mm (1/4") plywood glassed on both sides with 6oz cloth is extremely stiff and strong. I don't have any data, but would expect it to be at least as strong as 9mm ply, but is also better protected from the…"
Jan 10
Dean Wilkerson replied to Lovako's discussion Ply Construction
"Chopped Strand Mat adds weight, but very little strength.  Fiberglass epoxy adds an immense amount of strength, so much so that foam sandwich can be a direct replacement for plywood in many instances.  There is some disagreement as to what…"
Jan 9
Iain & Cherry Mae Cairns replied to Lovako's discussion Ply Construction
"Ian R, instead of pulling people down with any idea's they may have about their boat, sail your perfect boat out into the middle of the bay,, throw the anchor over the bow ,, however don't let go. Lovato is asking for collective thought,…"
Jan 9
Ian R replied to Lovako's discussion Ply Construction
"Hello again Lovato: Yes you may have built a 42ft boat, but let's face it, one boat is not the same as another. My boat is almost 30 yrs old and looks new: how about your boat? I have got to laugh, you even try to ban me for commenting on…"
Dec 24, 2021
Dean Wilkerson replied to Lovako's discussion Ply Construction
"I agree that CSM is a poor choice, but woven fiber makes sense.     However there is another option if stiffness is the goal, and that is foam sandwich.    You could also use thin ply on one face in lieu of glass…"
Dec 21, 2021
Lovako replied to Lovako's discussion Ply Construction
"Hi Robert, Im all ears when people answer me in a decent way. I built a large box hanging between beam 2 and 3 on a lip with x3 25mm stainless safety pins on each beam. My box lasted 10 years but must be rebuilt as the frame was built from soft…"
Oct 29, 2021
Robert replied to Lovako's discussion Ply Construction
"I am also rebuilding the boxes on my Pahi 42. Would suggest avoiding chopped strand because of poor strength to weight ratio. Skins of woven cloth on both sides is a good idea—especially for water and abrasion resistance. In fiberglass…"
Oct 28, 2021
Lovako replied to Lovako's discussion Ply Construction
"Smart arse, i happen to have built my 42ft not a 31 dingy. I used cloth, so why dont you crawl back into the hole you slithered out of?"
Oct 23, 2021
Ian R replied to Lovako's discussion Ply Construction
"If you were meaning fibreglass cloth in epoxy, that's a different thing.  Since you mentioned chopped strand that would indicate you don't know the difference between epoxy/fibreglass laminating and  fibreglass laminating. In…"
Oct 22, 2021
Ian R replied to Lovako's discussion Ply Construction
Oct 22, 2021
Ian R replied to Lovako's discussion Ply Construction
"Bonsoir"
Oct 22, 2021
Ian R replied to Lovako's discussion Ply Construction
"Unlike most of the people on here I have built a Wharram as it happens! Lorra people wanting to buy on "Wharram Builders and Friends" ;  not so many building. I shared a professional workshop with a professional fibreglass laminator…"
Oct 22, 2021
Lovako replied to Lovako's discussion Ply Construction
"Seems like a low IQ problem . . I never asked concerning the build of the box, BUT concerning the different streangths between 9mm ply, 6mm ply sheathed in one layer of fiberglass or 6mm ply sheathed in one layer glassfibre both sides. By the way if…"
Oct 22, 2021
Ian R replied to Lovako's discussion Ply Construction
"Well exactly- you can't do a proper job with fibreglass by just layering onto thin ply. We have all seen some awful stuff done like that, it's very heavy, lumpy, and dirty and not strong at all. Not a good rep. for Wharram boats. Sorry to…"
Oct 17, 2021
Jose Alberto Garibaldi replied to Lovako's discussion Ply Construction
"Lovako - I don´t know much about the phi 42 boxes, but some suggestion on the method. You cold try what you have in mind, but I think it might end up being difficult to have a good result without having some sort of mould to place the chop…"
Oct 16, 2021
Ian R replied to Lovako's discussion Ply Construction
"Your solution would be regarded as a "bodge" in my eyes, though I am not over familliar with that boat. You know that, so you asked for someone to tell you  (honestly?) ..........6mm is dinghy material."
Oct 13, 2021

Profile Information

I am:
A home builder, I own a Wharram
What boat (s) are you building or do you own?
Wharram 42ft Pahi, Wingsail Schooner rig
Country, City, and State?
Madagascar

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