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25% OFF US Blanks Longboards Ends Soon! Use Code LB25USB at Checkout
25% OFF US Blanks Longboards Ends Soon! Use Code LB25USB at Checkout

How important it is to have the board totally smooth and even before glassing?

It's a good idea to get the stringer flush with the foam so the fiberglass lays flat across the stringer. If it is not flat there will be a gap and there's a good chance the glass will crack there letting water into the board. 


Also, a smooth, clean shape is easier to sand. Wavey rails, high and low spots on the deck and bottom will cause a lot more work sanding.


Take your time to get the shape as nice a possible (without overshaping) and you'll find the glassing and sanding process will go pretty smoothly.