Skymax 180 focus knob - 8 indents version

I downloaded and printed the Skymax 180 focus knob from here, but that one has 10 indents. My original fitted Skymax 180 focus knob has 8 knurlings only, so it didn't fit. Skywatcher must have altered that design on recent Skymaxes... I used tinkercad to change it to 8 indents. The air pressure relief hole is now no longer fully open, so you need to drill that one out a bit deeper, but it's only a millimeter or so. Please check your Skymax focus knob before printing.

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