yes you absolutly have to use glass either side of the wood .....
anyone who try’s to sell you a veneer board without glass either side of the sandwich is trying to rip you off or he has no idea…
if you dont use glass then you must use anything else with a high tensile strength , hemp,wool, kevlar,carbon,all can substitute for glass fabric under the wood…
regards
BERT
So it can be either side — it doesn’t need to be both sides. So if I put the glass on the outside, what adhesive works best for adhering the wood to the foam? Epoxy?
Good to know Gary Young’s still alive and making stuff on Big I. I was one of his windsurf team riders back in '85, just before moving to Seatrend, and he made me a couple of 14lbs., 9’2" x 23 x 4.25" thick Woodwinds.
Intermediary layer can be anything, as stated, as some manufacterers actually use a thin, tissure paper around 3/4 oz to be saturated with glue! Since styro has no structural strength to speak of, glue, non set, works fine.
You’ll find Surftechs, made by Cobra, can have any # of varying methods for tying the Aussie Pine down to the foam, as different companies spec differently.
You just gotta get out there and make a few, using what YOU know works best.
Bert I understand and I did know I was putting you on the spot but I just couldn’t resist asking.
Lee is getting at one of the first of many questions that come to mind. How do you seal such light weight foam and give it some strengh so it doesn’t get saturated and distorted when vacum bagging?
So many questions so little time. I remember many years ago in high school chemistry class the nun teaching the class was talking about how things expand when they heat up and contract when they cool and I raised my hand and asked why water expanded as it cooled to a solid. I didn’t get the whole answer but I guess there is some satisfaction in asking.
Just as an aside, and so Joe can put it behind him…
Water expands when it freezes because the crystal lattice it arranges itself into takes up more space than the liquid state. Ice will continue to contract as it drops below 32.
Just as an aside, and so Joe can put it behind him...
Water expands when it freezes because the crystal lattice it arranges itself into takes up more space than the liquid state. Ice will continue to contract as it drops below 32.
Ice contracts as it cools in its liquid state until 32 degrees. When it freezes it expands until about 4 degrees, then contracts…as I remember.
Former roomy (OK, housemate, not room) made 8’4" to 8’6" epoxstyro windsurf boards, at 20.5 - 21.5" wide, easily 4" thick, around 80-87 liters of float, about 40 of them, in the 10-12lbs range finished (not including pads, straps, or fin), but including 12 footstrap/mast track inserts & finbox, that lasted better than ANY custom production from ANY company on the market, including Cobra.
I was a salesman in the biggest Mistral, F2, AHD dealer in NorCal, so I’d know.
His boards, made in the early '90’s, are still solid and in use today.
He squeegeed by hand, painstakingly slowly, spackled filled the lams, and did everything else normal.
I lam’ed my 8’4"er and sanded, taking all of 9 minutes to lam each side (he was astounded), and my board weighed 10.6 lbs., never delaming in 2 years (about 100 sailing days) and sold for more than I paid for materials.