Boeing 737 EFIS Knobs
thingiverse
Fitting standard rotary switches requires a precise match between the bottom knob's 6.5mm hole and the M3 grub screw set. This ensures a secure fit, allowing the switch to operate smoothly. On the other hand, the top knob's 3.1mm hole perfectly accommodates a 3mm brass shaft, enabling dual concentric switch/encoder functionality. A crucial step involves drilling through the rotary switch to enable operation. Those interested in my 737 project can learn more by visiting Facebook.com/sum1els737.
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