About this 3D model

Well Joel here is my design challenge entry. With this busy life I found the time to model this bad boy in an hour and do a test with 2 little prototype prints before the real size. I've designed it to be one single print requiring no supports and optimized for FDM printing strength. Little branding never hurt anyone so you got your logo on there, Matterhackers and MyMiniFactory too. Spool holder fits spool widths no more then 80mm which I think most 1kg spools fit with those specs. I don't have any 2 or 3kg spools so not really sure what the dimensions would be and or if the little shelve would hold hanging off the front like that.