Hi all, I have a question about panels, I have observed that many people do not use core over all surface of the panel, they make edges without foam, however I don’t understand why. I think while more surface have core in your panel, best weight / stiffness going to get because it will produce more sandwich effect and you could use lighter skins.
So, why you do this? Saving foam?
I see this particularly in skate manufacturers:
Regards
Do you mean leave the core expose in the borders?, if that the question you alredy have your anwser, and is easier to infuse, or for wet layup and bagging. Beside that you will have extra work after. I don’t know if my english is understandable)
it is for me 
why? Because it’s easier/faster/cheaper. I like Urethane sidewalls more, like used in kiteboards. Much better finish.
You already have a very good boards ;), these board,like you say, are made thinking on profitability, I don’t think that they are better than your boards .
I think same, but maybe, the examples I have given were too oriented to Easier / faster / cheaper, but it is these others I haven’t so clear:
This deck costs about $ 1,000 O:, Easier / faster / cheaper should not be a goal here.
In these cases I don’t see that the target is Easier, cheaper or faster, for example, cut just where the foam ends, is useful because you do not need a template.
I’ve only seen a manufacturer bearing the foam to edge! this make me doubt … perhaps cosmetic reasons?
Another possibility that could be is that first manufacturer made of this form and everyone else did same after…
Regards!
Wefunk, nice boards, prepreg carbon 
(but a 1000 $? I’ll need to build more of mine and start selling, could be way cheaper and still make a nice profit, haha)
Another possibility that could be is that first manufacturer made of this form and everyone else did same after…
Seems like that. I borrowed my PU sidewall from kiteboard building. I guess Loaded had the same idea around the same time
Yes, I thought so too:D.
Yes, seems that you and loaded have used same method, I think skis and snowboard uses this technique also to suport impacts, however, seems difficult and expensive, besides that add an extra weight, right?
Another reason to use margins on the edges. Could it be to avoid delamination?
Regards
takes about 15 mins and 5 euros on materials, plus extra mould. Not that difficult. costs about a 100 grams. And yes, definitely better on impacts! I throw it around all the time, hitting curbs, etc. The boards with just fibre on the sides would have them exposed (carbon splinters…) and it hides the relatively soft core
I have used red ceder wood on foam cored panels too. Easier to finish, harder then foam, higher shear strength to avoid delamination. But Interior use don’t takes the beating a board does, although a wood sidewall around a foamcore board would be a relatively easy, fast and cheap method, again to protect the softer core and prevent delaminating. Probably would help the vibration dampening a bit too 
1: yes, avoid delamination. The shear strength of the foam is a lot LESS than interply laminate.
2: you can damage foam easily. It will get dirty, look ugly, and after awhile, it can wear away and you have no foam on the edges.
3: see #1!!!
Hi Riff42 , I don’t explain me clearly,I don’t let foam exposed, but I extend it for all surface as possible, I mean this:
Respect delamination, I guess depends largely of fabrication method and the resin used, but I found that when the panel is infused adhesion between the foam and the laminate is even better that between the laminate. Could be?
Regards