Dr. Fish, Adjustable Density Fish Toy - Swims & Sink
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Adjustable density fish toy, use Control Wheel to change density, it can swim, sink or stay stable at constant depth.
- Ocena
- 0 / 5
- Polubienia
- 7
- Pobrania
- 19
- Wydruki
- 0
- Wyświetlenia
- 150
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- 0
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Informacje o modelu
- Źródło
- Printables
- Kategoria
- Outdoor Toys
- Licencja
- Creative Commons — Attribution — Share Alike
Master the Science of Buoyancy with Dr. Fish!
Watch Dr. Fish hover, dive, and rise on command!
By using a built-in syringe that mimics a real fish's swim bladder, you control how deep Dr. Fish swims.
Simply turn the Control Wheel to adjust the air pressure inside the syringe:
Compress the air -> Dr. Fish becomes denser and sinks
Decompress the air -> Dr. Fish becomes lighter and rises
Find the perfect balance -> Dr. Fish floats effortlessly at any depth
The challenge? Make Dr. Fish hover at a stable depth without drifting up or down. It's a fun way to discover how real fish stay perfectly positioned in the water!
Additional Part needed
1x "OFFCUP" Syringe, 1ml size:
You can buy them on Amazon or Ebay, for about 0,10€ - 0,40€ per piece, e.g.: https://www.amazon.de/OFFCUP-Einwegspritzen-Futterspritze-Haustierf%C3%BCtterung-Bremsfl%C3%BCssigkeit/dp/B0C9Q1VL43
Printing Instructions
Printed in PETG, but ASA will probably also work.
Use the settings below, it is important to not change infill density, otherwise Dr. Fish will probably not swim or sink!
3 Perimeters are used to increase water tightness, so infill will not be filled with water.
Part | Default Profile | Perimeter | Infill | Support |
|---|---|---|---|---|
Main Body | 0.2mm Structural | 3 | 80% Gyroid | no |
Tail Fin | 0.2mm Structural | 3 | 50% Gyroid | yes |
Top Fin | 0.2mm Structural | 3 | 10-90 % Gyroid | yes |
Bottom Fin | 0.2mm Structural | 3 | 100% Rectilinear | yes |
Control Wheel | 0.2mm Structural | 3 | 100% Concentric | no |
Syringe Screw | 0.15mm Structural | 3 | 100% Concentric | no (included) |
After printing, remove the included Support from the screw, use a knife to cut all remaining support bits, so control wheel runs smoothly on it.
Top Fin Infill density can be changed to further calibrate density for different material/printers, in case Dr. Fish always swims, increase infill, in case Dr. Fish always sinks, reduce infill.
Assembly
Remove the plunger (inner part) of the syringe.
Use hot glue to close the tip of the syringe. It must be airtight.
Remove the rubber tip from the inner part.
Put the rubber tip back in the syringe.
Put the syringe into the Main Body and press firmly until it clicks in.
Place the gear inside the Main Body and insert the 3d printed screw through the tail opening and the gear into the syringe. Make sure the rubber tip clips onto the screw.
Put the tail fin on, position the shorter middle pin towards the top!
Clip bottom and top fin on.
Put Dr. Fish in Water and gently shake it to release any air bubbles trapped inside.
Adjust the Control Wheel to change density and watch Dr. Fish rise, sink and hover!