everything was about 1% smaller then model scale. m3 nuts only fit in slots by threading (yes threading, not sliding) through a longer bolt and then scewing the nut on to pull it into its slot. also, some sides had no 100 fill wall, on the layers seem stringy, not bonded. additionally, to pieces snapped off, fortunately, i was planning to remove them any way. I also selected nylon as material and received carbon fiber but dont know what plastic the carbon fiber is used to bond it together. it is an extruder holder so it needs to have some heat resistance. if PLA was used, i will find out soon enough. i only need it to work long enough to reprint my own piece in polycarbonate. will likely coat the sections closest to the extruder with smooth on epoxy to give it some additional protection.