Parametric mesh filter

thingiverse

Human: A simple air filter for computer case fans. Default settings are set up for 140mm fans, but it's easy to adjust the parameters for other fan sizes. Print Settings Printer: Da Vinci AiO Rafts: No Supports: No Resolution: 0.2 Infill: 100 Notes: This design is optimized for a .4 nozzle. The layer height must be set to 0.2mm for proper slicing. I've successfully printed with ABS plastic. For easier removal from the bed, consider printing without glue. I tried this method and had good results, but it was still quite tightly attached to the bed. Post-Printing Carefully remove the mesh from the bed The mesh tends to stick very tightly to the bed, and the single plastic strands can break easily. Waiting for the bed to cool is the best idea, but if you're impatient, try disconnecting it diagonally with a bed cleaning tool without rushing. How I Designed This A complex mesh like this proved difficult for most design programs to handle. The sheer number of intersections required to build a solid object caused most programs to crash or get stuck calculating them. Luckily, OpenSCAD is able to tackle this challenge, even though rendering takes some minutes. The next hurdle was figuring out how to slice the mesh properly. If it's sliced at just one level, the result would be millions of small squares, resulting in a weak structure. To achieve straight lines during slicing, there are two layers for the mesh part, each with a 0.2mm height difference but overlapping by 0.05mm for solid calculation purposes. This is why a 0.2mm layer height while printing is essential.