TLDR: If you just want to print it on a single plate mostly dialed in print the .3MF: PLA hoop-4-segment-one-build-plate  -  If you like it as a thank you go watch some of my videos and drop thumbs up!  My models will be free for the foreseeable future and I try to give the best 3D printing tutorials possible :)

Hi! I'm RandoTechNerd and I have been searching the internet for a 3D printable hoop for my cat Lulu (aka Lulu Bunz aka Lucifer) to jump through.  Credit where credit is due: I found a model for a hula hoop:  https://www.printables.com/model/691897-full-size-hula-hoop by B&BTech but it wasn't exactly what I was looking for as I wanted a customizable (any amount of segments - so I or YOU can print it on any size printer)  So when the lil dumb dumb *lovingly* figures out the 200mm radius hoop we can go down to smaller hoops. (Slightly smaller 4 segment single bed in this video:)

https://youtube.com/shorts/kvXGeAhP_Yk?si=WDteBgFmDeLXfXjC

  Hopefully if you're looking for a hoop to print out for your lil fur baby this can help:  Video and Channel:

  https://www.youtube.com/@RandoTechNerd

I'm considering maybe making these so please only use for personal use/feel free to share/remix with attribution.  Oh and if you want to make them and sell them we can absolutely work something out! :)  Also if you have any feedback or would like to see any additional parameters let me know.  disclaimer: Google Gemini was used in the creation of the OpenScad code.

Also included a 180mm radius ¼ segment portion STL.  If you need assistance with this print feel free to leave a comment and I'll respond.  Also I just made the model and haven't attempted a print yet but will soon!

Customizable Circular Hoop with Segmented Option (OpenSCAD)

This OpenSCAD script generates a circular hoop that can be customized to your exact needs! Whether you need a solid hoop or one that can be printed in segments and assembled, this model has you covered. The segmented version features integrated curved connectors that follow the hoop's arc for a clean and strong connection.

**Features:**

* **Fully Parametric:** Control all aspects of the hoop using the OpenSCAD Customizer.

* **Solid or Segmented:** Choose to generate a single solid hoop or divide it into multiple segments for easier printing or for creating larger hoops than your print bed might normally allow.

* **Curved Connectors:** When segmented, each piece includes a curved pin on one end and a corresponding curved hole on the other. These connectors are designed to follow the hoop's circumference for a seamless fit.

* **Adjustable Hoop Dimensions:**

    * hoop_major_radius: Defines the overall diameter of the hoop (from the center of the hoop to the center of the tube).

    * tube_minor_radius: Sets the thickness (radius) of the hoop's tube material.

* **Adjustable Connector Parameters (for segmented hoop):**

    * connector_arc_angle: Controls the length of the curved pin and hole along the hoop's circumference (in degrees).

    * connector_pin_width: Sets the width (diameter) of the connector pin.

    * connector_clearance: Allows you to fine-tune the tolerance (gap) between the pin and the hole for a perfect fit, accounting for your printer's specific calibration.

* **Smoothness Control:**

    * smoothness_factor: Adjusts the resolution of the curves for a smoother finish (higher values) or faster rendering (lower values).

* **Single Segment Preview:**

    * Option to display only a single segment if you've chosen the segmented version, making it easy to inspect the connector design before printing all parts.

* **Units:** All length dimensions are in millimeters (mm).

**How to Use:**

1.  Download the .scad file.

2.  Open it in [OpenSCAD](https://openscad.org/downloads.html) (it's free!).

3.  If the "Customizer" panel isn't visible, go to Window > Customizer.

4.  Adjust the parameters in the Customizer to your desired specifications:

    * Set create_segmented_hoop to true if you want segments, or false for a solid hoop.

    * If segmented, define num_segments.

    * Modify hoop dimensions, connector details, and smoothness.

    * Use display_single_segment_if_segmented to preview one piece.

5.  Once you're happy with the preview (F5), render the model (F6).

6.  Export the model as an STL file (File > Export > Export as STL...).

7.  Slice and print!

**Printing Tips (for segmented version):**

* Ensure your printer is well-calibrated, especially for dimensional accuracy, to get the best fit with the connectors.

* You might need to experiment with the connector_clearance value. Start with the default (e.g., 0.25mm) and adjust based on your test prints. A smaller value gives a tighter fit, a larger value gives a looser fit.

* Print a single segment or just two connecting segments first to test the connector fit before printing all parts.

* Orient the segments on your print bed for optimal strength and minimal overhangs, especially around the connector areas.

the .3MF is pretty optimized for a small cat and press fit together when I tested.

Happy printing! Let me know if you make one – I'd love to see it! - See you on the other side NERDS!