About this 3D model

I've launched a Kickstarter project to make these in Aluminum.Check it out here and tell me what you think. http://www.kickstarter.com/projects/458878790/skeleton-dock-iphone-4-4s-5-ipod-touch-directional 3 Versions Here. Version 3 and 4 have the best fit. 4 has the best fit overall. Low density Infill does not direct the sound well.