Filament roller print without support needed

Features:
- Honeycomb pattern for reducing resources, strength.
- Prevent shaft sliding off bearing
- Keep shaft move smoothly even when it contact to the blocker by adding a small cylinder (reduce contact surface area)
- Support up to 88mm spool height (you get it, right?)

Distance between bearings: 100mm

I'm a bit confusing what should I call these dimensions. 100mm is the distance from rod to rod.

Need:
- 4x bearings 8x16x5mm
- 2x shaft (diameter 8mm, length 100mm), please make sure shaft and bearing fit together (the shaft actual diameter may smaller a little bit to fit bearings)

Bearing holder can snap these bearings in-place

Instruction:
- Put bearings on the shaft (2 bearings for each shaft)
- Align these bearing, and snap it in the bearing holder
- Enjoy

I also include the f3d file, I added some parameter to change, but they could mess up when change. I've just used fusion360 for a couple of months, so there's a lot to learn more.

params that seem to be work ok :
1. Honeycomb wall (thickness)
2. Bearing distance
3. Bearing grab angle

Change logs:
27/10/2022 - move honeycomb pattern a little bit to increase support on horizontal bridge

3D PRINTING SETTINGS

Printer: Creality Ender 2 Pro
Nozzlle: 0.4mm
Layer Height: 0.2 - 0.28mm
Support: No
Cooling fans: 100%
Duration: 4-5 hours