Threaded Pool Sinky 

Customizable 3D printed pool sinkie with flexible TPU leaves and adjustable ballast.

This customizable pool dive toy can be sized for different designs and uses removable US quarters to adjust its weight and sink rate. Flexible TPU leaves sway underwater to mimic a small sea plant while the threaded base keeps the ballast contained.

Adult assembly and supervision required. Inspect before each use and discard if damaged, as loose coins may present a choking hazard.

Printing Tips

Printing Technology: FDM

Layer Height: 0.2 mm

Perimeters: 4

Infill: 10%

Infill Pattern: Gyroid

Recommended Material: PETG, TPU

Supports: Yes

Support Type: Tree

Assembly Instructions

Materials Needed:
Ballast (coins, rocks, washers)

Instructions:

  1. Measure the diameter and height of the items you plan to use as ballast, then customize the container to fit.
  2. Slice and print the leaves in TPU.
  3. Slice the container and add a pause immediately before the layer that bridges over the leaf loop.
  4. At the pause, place the TPU leaves into the slot with the raised section facing down. Apply a thin layer of glue stick to hold them flat.
  5. Resume the print and allow the bridge layers to secure the leaves.
  6. Add the ballast, screw the lid closed, and test the Sinky in shallow water before use.

    Adult assembly and supervision required. Inspect before each use and stop using it if any part becomes damaged or loose.

Customize Model


min: 25 mm, max: 50 mm

min: 15 mm, max: 50 mm

min: 20 mm, max: 235 mm


min: 20 mm, max: 235 mm

By using the customization software, you agree to our Privacy Policy, Terms of Service, Disclaimer, EULA, and Cookie Policy.

Measure twice, customize once.

Something doesn't look right, or not sure what a setting means?

Download your design

Choose a file below and open it in your slicer. For designs with several components, download every part you need. Original files use the design defaults; your customized files appear here after generation.

Legal Disclaimer:

The files provided here are for personal, non-commercial use only. Redistribution, modification, or commercial use is not allowed without prior written consent from Lunar Prototypes.

Batch runs are a 3-step flow. You can revisit any step at any time.

Generates exactly N editable rows (1 to 200).
Working...
Notes: Changing column headers or adding/removing rows or columns will cause validation failure. Validation requires exactly 10 rows.
If validation fails, fix the CSV and re-upload here.
After validation, this button will enable. You can close this page after submitting.
Estimate: N/A