Vivitar VI Lensboard

Lensboard for the Vivitar VI and 356 enlarger .
You'll need a retaining ring, and depending on the printing material, you might need to spray flat black paint once or twice to avoid translucency.

4-5 top and bottom layers in black PLA+ worked fine to avoid translucency
Sanding of the holes is required to match your enlarger and allow easy install of the board

Made in Tinkercad from a scan of an old lensboard

v2A is 2.4mm thick and has a small recess for a EL-Nikkor 50/2.8 as shown in picture

v3 is 2mm thick and has added grip bars for easy on-off from the enlarger

Added versions for other size of lens-mounts (43, 50, M42) besides the standard 39mm mount