This pickguard outline can be used for the Yamaha SA-20, SA-30 and SA-50 guitars
The outline was obtained by hand tracing an SA-50 pickguard. It is not 100% correct but a very close approximation. Note that the pick up height adjustment opening to access the bridge screw is offset… This is a ‘feature’ on all pickguards and not a drawing error.
Download file and print in unscaled landscape format. Test the dimensions once printed to see if they match the two that are printed on the outline.
Pickguard photos below, good luck with making one and any feedback welcome.