Selector Knob

thingiverse

I required a substantial selector dial that users could clearly see what it was pointing to, thereby allowing them to select their desired option easily. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator Rafts: No Supports: No Resolution: Medium Infill: 40% Notes: I created this model using ABS due to its favorable properties as an engineering plastic, and it would also work well with PLA. I operate my platform at 110C and the extruder at 230C. Design Process Earlier, I designed a faithful replacement washing machine dial. To achieve this, I created a stub that fits over the shaft and glued on the knob. However, making two pieces was necessary to print it successfully. To design a new knob, I modified the flat section of the stub to fit any standard potentiometer or wafer switch. This allowed me to create a knob that slips down over the wafer switch nut, hiding it completely as it finishes flush with the surface. One side has a longer protrusion that points to the appropriate device in operation. In my case, this was a speaker selector panel between two different amplifiers. I made sure the knob is large enough to grip both protrusions comfortably, allowing users to easily select their desired option. The stub and knob fit together tightly, so for now, I haven't glued them together, leaving room for potential changes in the future.