3d printing design guide
Just as CNC milling requires undercut and tool path considerations, or injection molded parts require draft angles and ejector points, there are a number of fundamental elements elements that are relavent to 3D printing. Detailed design information discussing how to achieve successful 3D printed parts with our FDM technology can be found below.
FDM is able to produce walls down to 0.8 mm. As a general design rule of thumb it is good to make wall thickness a multiple of the nozzle diameter (if this is known). The most common nozzle diameter for FDM is 0.4 mm.
FDM can sometimes produce holes that have slightly undersized diamter. If accurate holes are required drilling after priniting is reccomended. Holes smaller than 2.0 mm in diameter should be avoided.
Vertical pins created using FDM should be no smaller than 3.0 mm in diameter, if they are functional. Most of the issues relating to minimum pin size center around cooling. Off the shelf pins, inserted into a drilled hole, are the best solution if functional pins are required in a design.