The file 'Corvette Engine Block Business Card And Pen Holder 3D Printer Model' is (stl) file type, size is 3.8MB.
I used this original design, which was already great, and drilled holes into it to hold my pens but filament tends to shred when drilled so I redesigned this with holes for your pens already there. Let me know what you think in the comments.
engine_card_block_with_pen_holes.stl | 7.6MB |