170mm diam, 20mm thick design/logo cover for floor drains This lid floats if water enters the drain, normally it will prevent the water trap from drying out to fast... And it looks nicer than the original Also added a blank cover for you to add your own logo (stl + step) I designed the floor drain cover to be printed with my own conductive ETPU rubber ( http://rubber3dprinting.com/ ) because it results in: • An exclusive look with its matte carbon black surface finish. • A nice print with a minimum of stringy cobwebs (the TPU and carbon black mix makes for a favorable rheology and retraction settings can be optimized). • A cover that will not crack/break when stepped on. • Less energy used when printing since it does not need a heated bed (like ABS etc). To prevent the cover from compressing too much under the foot I made some internal ribs, that way the infill (20%) can still be low and the final part will do a great job as a float. I used a 0.7mm nozzle at 230 deg C for this print. To use a bigger nozzle than the commonly used 0.4mm gives the 3D print so many pros, for instance lower pressure in the melted material -> higher speed. The biggest advantage is the much stronger parts due to the better bonding between the layers (also makes it more likely to be water tight). The conductivity is sometimes a main feature for using the ETPU but in this case the surface finish and ease of 3D printing were the main drivers (the fact that conductivity is not a drawback in this case helped of course). I designed this for a friends restaurant, link to photos I took there: http://palmiga.com/opening-night-2015-httpvastragard-se/ The restaurant: http://vastragard.se/