the idea is generate something like this, were the ports, (holes)., are drawn into the cilinder
heres a pic
i already made the transfers, and look something like this.,
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but when i extrude the cilinder diameter.
here is the result
how can make the holes into the cilinder?
also here is the archive .sldprt , if u wanna take a look,.
SolidworksDrawings And Detailing