Typical filter for dust and chips from a cnc machine. Works fine even for small particles. See instructions for further infos. If you like to use the 4 fixations on the top, please put in the M8 nuts during the print. They will be totally enclosed and later you will have no change to fix anything on top. The 4 bottem nuts to screw the separater to the dust container can be inserted later. You need a rather big print volume (340x240x220) to print in in 1:1 scale. Sorry, raw data is not available.