While thinking about laser cutting wheel covers/rim fillers at a later date I bumped into an interesting post on XS650.com; a Yamaha enthusiast forum. Instead of laser cutting rim fillers they modify pizza pans. Yes, pizza pans. JRay77 goes through the steps he completed to make some convincing fillers. The whole post is here: http://www.xs650.com/threads/wheel-covers-ideas.46953