much on references to primary sources . please improve this by adding secondary or tertiary sources . october 2009 learn how and when to remove this template message grain surfboards founded 2005 headquarters york maine products hollow wooden surfboards website http www.grainsurfboards.com grain surfboards is an american company that manufactures custom and originally designed hollow wooden surfboards . the surfboards are made primarily from northern white cedar with some western red cedar added for color accent . contents 1 history 2 production 3 references 4 external links history edit the company was founded in 2005 in york maine . claiming boat building influences grain describes its first boards as having caulked seams and bronze fastenings like a wooden ship . 1 construction methods were adopted from common kayak and surfboard building techniques until a lighter board requiring fewer non renewable resources was developed . 2 grain surfboards collaborated with channel islands surfboards on may 2009 to market a wood version of the rob machado model 6 2 biscuit originally designed by kelly slater s official shaper al merrick as a foam surfboard . 3 production edit this section needs expansion . you can help by adding to it . september 2009 new designs are drawn using 3d cad software . from the 3d design two dimensional flat sections are created to become the precision cut frames internal rib like structures perpendicular to the mid line from nose to tail and keel known as stringer in a foam surfboard . then bookmatched wood is selected that blends together to form a unique pattern on the deck and bottom of the board . the keel and frames are then drilled with holes to further reduce the weight . the constructed frames and keel define the overall shape and size of the board . the installation of fins and fin boxes for removable fins is aided by a builder s laser to ensure that fins are placed canted and toed in symmetrically . the hollow and watertight nature of these boards require the installation of a vent plug to equalize internal and external pressure that changes due to temperature variation and to changes in atmospheric pressure which without the vent would cause air pressure inside the board to increase . references edit official website official website faqs channel islands surfboards the wooden biscuit external links edit locally grown hand built in maine official website retrieved from https en.wikipedia.org w index.php title grain surfboard company & oldid 647120967 categories surfing equipmentsporting goods manufacturers of the united statescompanies based in mainehidden categories articles lacking reliable references from october 2009all articles lacking reliable referencesarticles to be expanded from september 2009all articles to be expandedarticles using small message boxes navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 14 february 2015 at 17 03 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view