Parametric OpenPrintTag Spool Adapter

*** Full Transparancy: I designed the model and then used Claude to build the SCAD files *** Introduction There are a lot of files for spool adapters on printables. So why make another one. Well I wanted one that was quick to print, used a little filament as possible and had a seperation between the part the tag was stuck to and the spool adapter. So I designed a model to work with Elegoo cardboard spool which is a solid part of my filament library. So once I designed and tested that part it worked great. Locks into one side of the spool and doesn't fall out. The tag holder snapped right over the adapter and it all stayed locked in place no matter how much I banged the spool around. The the realization set in that I was going to have to remodel ever different type of spool. So I took my design up to Claude and asked it make me an OpenSCAD file that can make the spool adapters for both spools with a lip and those with a solid barrel along with the cap. Now I just run OpenSCAD, add my spool setting and print my STLs. Parts Tag cap: holds the OpenPrintTag NFC sticker in a covered pocket, and clips onto any adapter. Print one per tag; it moves with the tag from spool to spool. Snap adapter: for spools whose center hole goes through a thin wall. Spring arms with hooks click in behind the wall, and the adapter's rim gives the cap something to clip onto. Friction adapter: for spools with a solid barrel, a smooth tube all the way through. Spring arms with rounded bumps press against the tube wall to hold it in place, with the same rim for the cap. Print Settings Material: PETG or better so that they can go into a dryer. The tags are raited for 80C so that makes PETG ideal. Perimeters: 2 Fill: 15% Grid Supports: None

Customizer settings Choose a preset from the dropdown, or set these two sections. Everything else can stay at its default unless you really want to make custom parts. But if keep in mind if you change the adapter you will need to change the cap. Part - part: adapter for the piece that goes in the spool, cap for the tag holder, both to print the two together. assembly is a cut-away preview only.

- adapter_type: - snap for spools whose hole goes through a thin wall with open space behind it. The hooks click behind the wall.

- friction for spools with a solid barrel, a smooth tube all the way through. The bumps grip the tube.

Spool measurements (use calipers, and enter exactly what you measure) - hub_bore: diameter of the spool’s center hole.

- hub_wall: snap only. Wall thickness at the hole. Include any thicker ring around the hole.

- rear_space: snap only. Open space behind the wall. It needs to be at least 3.5 mm.

- insert_depth: friction only. How far the adapter goes into the tube. The default of 10 mm works.

Notes - One cap fits every adapter. Print one cap per tag, and one adapter per spool type.

- Print both parts flat as exported, with no supports. PETG is recommended.

- If a setting won’t work, the render stops with a message saying what to change.

Prefabricated Spool Adapters I will be adding spool adapters as I build them for myself.