DrTebi's Blog

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This blog is written by DrTebi | 5 entries so far

Latest Entry

The Ternowski Knob - a shop-made, "studded" knob

03-11-2016 08:21 AM by DrTebi | 5 comments »

In Need of a KnobI am in the process of designing and building a horizontal mortise machine. For that, I needed a precise circle cut-out. To do that, I needed a circle jig. For that, I needed a knob, one with a threaded stud. I had made one a while ago, and found my template, improved my technique a bit and went to work. The Knob ConceptMost knobs are formed like a star, with five “pointers”. I took Inkscape to the rescue to create a template, here a picture: It’s based around a 2 1/4” circle. I drew a hexagon inside that circle, and drew 1” circles at each corner of the hexagon. The hexagon is slightly larger than the circle, which results in le...

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