Rack holder for surface mount part reels. Has a space for a label and a graduated section to help count parts which works for most small components (4mm spacing). The reels can be inserted and removed from the top without disassembling the rack. 175mm minimum print bed. Insignificant modification of logang's https://www.thingiverse.com/thing:3174759
To print without supports spool slot is supported by one perimeter thick wall.
Spool slot can be opened by flat head screwdriver or scalpel.