Thrasher's DIY: How to Build a Concrete LedgeGot some extra steel? Turn that into the perfect ledge with guidance from our resident concrete god, Austin Kanfoush. 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