500W or 800W spindle, which one is better for Mini Desktop CNC? Comgrow Robo CNC upgrades

Welcome back to Aurora Tech Channel. Two weeks ago, I reviewed this Comgrow Robo CNC engraver. The stock 60W spindle can cut through the acrylic plate and make a bracket like this, but obviously, it was not powerful enough to make the same bracket with a one-eighth inch aluminum plate. As this machine is quite rigid compared to the CNC 3018, I decided to install a more powerful spindle on it and it should be able to make some aluminum parts.

Besides the spindle upgrade, I will also do some small upgrades to this machine. Let’s go through what I have done and the results.

For the 52mm spindle mount, you may download the files from here:
https://auroratechchannel.com/download/Comgrow_Robo_52mm_Spindle_Mount.zip

I have included the STL, STEP and Fusion 360 format, so you can adjust the leadscrew nut hole according to what type of nut you have.

Comgrow ROBO CNC affiliate links:

Buy from Comgrow Offical website:
https://bit.ly/3x3uRT0
$229 (Free sales tax, may save another $20 depending on where you live)

Buy from Amazon:
https://amzn.to/3B9xjGA

500W Spinde:
https://amzn.to/3EWRZUi (Spindle + PSU + 13 pcs ER11 collet)
https://amzn.to/3oq5RA7 (Spinde + PSU)

45mm LM8uu bearings x2:
https://amzn.to/2UKvcd4

POM Leadscrew nut:
https://amzn.to/3BUmDvG

End Mill:
HQMaster Single flute end mill:
https://amzn.to/3o0XdYg

Polymaker ASA Temperature Resistant Filament: (For 3D printing the Spindle Mount)
https://amzn.to/3i4PSFi

Overture ABS filament:
https://amzn.to/3o1TutE

24v relay x1:
https://amzn.to/3iNGm8K

16 gauge wire:
https://amzn.to/3iMvqZe ($6.95 25FT Red +25FT Black)

Acrylic shield (made from 36×24 1/8″ thick” sheet)
https://amzn.to/306k5xL