BisonV3 - Upgraded!

Bladeless fan conversion for 4" vent fans

This 3D model is designed from scratch in Fusion and contains no measurements or scans of actual real world objects.

The BisonV3 features a much smaller overall frame. At 10.5in (~27cm) tall, with a 5.5" ring, this bladeless fan works great for desks!

The BisonV3 is powered by a 4" vent fan from Amazon. Turn a $20 vent fan into a modern, bladeless fan! You can purchase the vent fan here:

https://www.amazon.com/Booster-Exhaust-Ventilation-Greenhouse-Basement/dp/B08LY4Q5GY

What changed?

First, let's start with what stayed the same. Version 3 uses the same bladeless fan rings and stands from V1 and V2! This saves nearly 9h of printing and ~245g of filament when upgrading.

The new fan doesn't have variable speed control, however I've found the speed to be perfect for a desk fan. The new fan is much quieter than the other fan and works better even with my sound sensitivity. This also features a shorter vent fan body, so this allows for a much shorter overall frame for the fan.

Overall, BisonV3 has some major structure and airflow improvements, while reducing time to print and filament usage!

Improvements

BisonV3 Body

• ~65g saved on the fan body (both AMS and non-AMS)
• AMS prints are ~1.5h faster (6h17m -> 4h42m)
• Non-AMS prints are ~2h hours faster (6h35m -> 4h42m)
• Sturdier top rim goes over the collar instead of under it

BisonV3 Collar

• Collar connection snaps together better with bladeless rings
• Print no longer requires supports
  • Previously this went around the rim of the body and required a notch in the thin wall
• Fits snuggly inside the new fan base

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Pros

- Compact design
- Quieter fan
- Robust re-design of top rim and collar
- More efficient prints (faster print times & less filament used)

Cons

- Requires a new fan ($20 on Amazon)
- New fan doesn't have variable speed control

Print Info

I recommend using multiple complimentary colors for the fan pieces. The objects in the included profile are laid out to keep important edges cleaner while still laying as flat as possible. Supports are used only when necessary.

Fan Body

This can be printed with or without AMS. The silver ring around the hexagons is using AMS, but a single color fan body is also a great option. Plates are provided for both in the included profile.

Bladeless Rings

The rings are laid out specifically to keep certain edges clean. Some deburring may be necessary, as brims are used to ensure the rings don't fall off the plate due to the minimal contact points of the circles.

Stands

The stands can be printed in either TPU or PLA. I recommend TPU so it's a little softer and more slip resistant, but I used PLA as a stand for a while before I got around to loading TPU into my printer.

Most importantly,

Have fun and keep printing. :)