Hi all, being a bit lazyon the searching so i thought i'd ask here. Does anyone know if Fiberglass and Resin sales in Welshpool has surfboard core foam (is it polyurethane??) or other cores? I actually tried to call them but they are closed today...
You want a surfboad blank?????
Go to surf supplies 3/68nCollingwood St Osborne Pk.
If you want polystyrene foam try Rmax 5 Balwin St Kewdale.
Don't think fiberglass and resin sales have either, but they might sell the 2 part blow your own foam mix.
Cheers for that Decrep! What are the surfboard blanks like? Are they rectangular blocks of a certain thickness or they already have some kind of shape to them?
Fibreglass and Resin sales only do 2pac polyurethane as Decrep said and divinycell but they are expensive the latter.
The above suppliers are tops, but if south of the river and you need divinycell the cheapest by faaaaar is Herex from the mob on Port Kembla Dr in Bibra Lake but I can't remember their name. Anyone?
Hi Decrepit
Do you know the difference in weight between closed cell polyurethane and polystyrene per 100ltrs volume.
Also is the closed cell stronger to begin with as in:
1. are the properties much better with closed cell for avoiding depresson, and/or memory to return to original shape, and
2. Is closed cell stronger from shearing/breaking.
Just interested in what is going into boards these days and whether we would be better off sacrificing some weight for the greater strength and longivity. I know there is a lot more to it with the laminate (ie divinycell/EPS and the layups (carbon/E-glass) etc) as well as the stringers and box/hardpoint protection.
I initially wanted to shape a surfboard completely so I wouldnt be really interested to buy a blank... Unless theres still a bit to do on them such as the outline and rails. That could actually save a bit of time.
Do you mean by plane off changing the blank shape?
the blanks are in a shape that provides the greatest variety of shapes without excess waste and , as mentioned before, they get softer the further you cut into them.
Usually the blank manufacturer will get the shapers from his biggest customers to shape a plug, and make the blank mold from that. That way they get what they want and cant whinge that it isnt right! The blanks can be tweaked easily by pulling the stringer up when gluing it in.
polystyrene blanks are hotwired to rough shape for a custom board.
there is a guy in sydney, he has boards for sale on good old ebay, also has a shaping machine and does blanks for some big surf shapers, so you can get one you want already shaped then just clean it up and glass it. he's called T-19 surfboards or something like that..
Thanks for the advice! I'd still prefer a square bloc tho 
... I'd love to try the sandwich vaccum bagging too but that'll have to come later. Will let u know how it goes!!
... I'd love to try the sandwich vaccum bagging too but that'll have to come later. Will let u know how it goes!!
Try the insulation places - I used to use extruded polystyrene for composite glider wing cores, and could get a 2400x600x40 sheet of the stuff for $32(nzd).
One of the trade names is 'Styrodur'. It all seems to be made in Saudi-Arabia.
That's a very good price, from memory the stuff I got last century, was 2400 X 600 & ~150 cost Au$150.
Any idea what density it is???
