Bodacious Wluff-Albar

This is an attachment for a 1 inch arbor press. It is designed to hold various sized punches for leather working (i.e.. pricking iron, single hole punch, etc.)

But, here's the problem. I cannot get this thing to print. I am using Ultimaker Cura 5.1.1 and the Creality Ender 3 printer.

The last picture shows the idea of the full assembly of the attachment.

Any help would be appreciated.

Thanks,
Dan