Poti / Oscilloscope / Scope Knob

cults3d

Yet another axle turner designed specifically for my Tektronix TDS 220, which needed four new Scope Knobs after the originals broke down. I was impressed by how well this custom-made knob fit onto its 4.8 mm axis - just like a perfect match with the original. Over time, the old knobs had worn out and the plastic softener couldn't keep up with my firm grip anymore, so I decided it was time for an upgrade. Thanks to FreeCad's capabilities, I designed this new knob from scratch and printed it with precision. A clever trick helped me achieve accurate diameters despite printing tolerances - three small "fingers" build up pressure on a plate to secure the knob in place. It took just 30 minutes of work to complete this project, but the result was well worth the effort.