Dear all,

this is my entry for the “beach and pool contest”. Designing took a long time. The hardest part was optimizing the model to print it without supports and get a good performance of the toy and printer.

The model was designed and printed on a A1 mini.

This is my first upload of a 3D model ever, it took me a lot of time to get this result with a quality I am satisfied with.

First time I printed TPU as well (awesome stuff)

Filaments I used:

• Bambu Lab PLA Basic - Ocean to Meadow (For all parts except the gaskets)
• Bambu Lab PLA Matte - White (for the theeth)
• Bambu Lab PLA Matte - Bacl (for the eyes)
• Bambu Lab TPU 95A HF - red (was the only one available and it is perfect)

Feedback is welcome!

My daughter loves the water gun! Shooting distance up to 8m

Fun little pool or beach toy for kids. Based on the piston pump priniciple

Notes:

• No supports needed
• A1 mini suitable!
• You might want to slow down the print speed at around 75%. The piston and body need very good adhesion! Some prints failed for me because the acceleration of the printer was too fast when it was building “up high”
• Single color print use significant less time! I will make a dark blue and a pink one again next week - pictues might follow!

Assembly:

1. Insert the stopper gasket into the stopper. I added some guiding so that you cannot put it in the wrong way.
2. Snap the assemlby from step 1. together with the shark body. This also fits only one direction.
3. Use force to really snap the parts together - I prefer to hit it on something. You can check if it is right by looking inside and see the gasket snapped in tightly. There should be only a minimal gap between stopper and shark body.
4. Screw the fin into the piston
5. Insert the second gasket on the piston
6. Insert the piston with slight force into the body
7. Enjoy

Recommendations/hints:

You can print the piston gasket with a slight negative scaling to give it a tighter fit. If you are not able to insert the piston just use a knife and remove some of the gasket while it is attached to the piston. Some candle wax can be used to improve sliding and damper the noise - just get a candle and rub it on the piston.