Thrasher's: How to Build a Concrete Spine RampKanfoush gets more ambitious, showing you how to measure out and build the perfect spine. Elissa, Chico and Frank help him break it in at Treasure Island. Keep up with Thrasher Magazine here: http://www.thrashermagazine.com http://www.facebook.com/thrashermagazine http://www.instagram.com/thrashermag http://www.twitter.com/thrashermag