Prusa Mini Revo Micro Upgrade

You will need two M3nS square nuts.

Why should you use this part?

The original e3D upgrade part promises a lighter print head and a more silent heatsink fan.

But with this upgrade:

• you don't need to buy a new fan
• you don't need to cut away the brass olive
• you keep the design closer to the stock one
• you have a more rigid mount
• self-tests will still work

The stock fan has an airflow of 0.23m³/min. The e3D one has an airflow of 0.05m³/min. So, even if the flow path isn't ideal, there should be still more than enough flow to keep the heatsink working.

Print Instructions

The 3mf file contains my recommended support and print settings.

I would recommend printing in a heat resistant material like ASA. But PETG might work too.

It's designed for 0.4mm nozzles or smaller, 0.2mm layer height, or better, adaptive layer height.

Assembly

OPTIONAL: Replace the part cooling fan duct first. (If you want to.) Here is my duct design.

1. Follow the disassembly steps of the e3D guide.
2. Cut a 25mm piece of PTFE tube. You can taper the inside, but you don't have to.
   
3. Put it into the Revo and secure it with the collet clip.
   
4. Screw the heatsink into the mount. The heatsink should be flush to the shown part of the mount.
   
5. Now you can add the brass fitting.
   
6. Push the M3nS nuts in.
7. Screw the mount onto the x-carriage and guide the cables to the MINDA holder as shown.
   
8. Screw the fan back in place. Don't use excessive force.
   
9. Now you can guide the cables to the board and continue following the e3D wiring instructions.

Don't forget to readjust the MINDA height.

Happy printing.

Other Recommendations

If you still get problems, you should consider my other upgrade or the original e3D upgrade.

I would also recommend replacing the part cooling fan duct with my version.