About this 3D model

small trailer i designed for my 1/18 scale FMS chevy k10, the hitch i downloaded from some odd website, and redesigned it, and fully designed the trailer and wheels, uses a 3mm steel axel, the axel housing is screwed to the frame with four M3-8s and the hitch coupler is held togethor with a M1-4 or so, make sure to print tires with tpu, some filing may need to be dont to traler for it to work with rc boats, and to attach hitcch to truck bumper, drill small hole through hitch and thin part of bumber (as shown in photos) and use M1-6 or M1-8