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Hirose connectors scaled and placed on the board. Note the board has been lengthened to 106mm in odrer for the 3 mount holes at the top to clear the first wells of the 2x16 fiber holders.

relative placements

board_4x4_d.stl
fiber_holder_32.stl

fiber_32_v11.iges
fiber_32_v11.step

Here is a shorter version.

board_4x4_narrow.stl
fiber_holder_32_narrow.stl



I redesigned the block connectors so they can be closer in Y. Total board lenght now is 86mm.
I would make the connector first. 12mm wide, since this is the spacing between the sipms.
These are the measurements of the sipm + board + connector.
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