12/6/17 - Awesome design. I am about 1/2 - 3/4 of the way through building. Just waiting on the alloy base and the side rails to be made by an engineering firm. I used my existing trailer frame as the template. (Same trailer which this has been designed from). I printed in white ABS and painted. I used my existing parts from my dolly model and some M3 screws and nuts. I have also designed some of the inside rails and uploaded as a remix. Found here : https://www.thingiverse.com/thing:2335670 and here : https://www.thingiverse.com/thing:2335576 . Thanks heaps to the designer for the upload and design. :)
27/11/17 - I haven’t uploaded my progress in a while so thought I would post some more updated pictures.
Used some supports for some of the parts as my printer wouldn't print without.