machining aluminium with 1.5kW spindle

[CharlesJenkinson]

The 'geared' belt driven idea sounds juicy. I thought you might get a few more replies on this, regarding how others do it successfully. There's not been any definitive answers yet, or at least a bigger sample of a variety of solutions that work for different people. It may be that there are so many parameters that need controlling or considering, and you just have the odd one not in your favour, but I hope you don't have to resort to too much empiricalism to sort it.

[routercnc]

Hi Charles,

I think the biggest factor is not buying the 2.2kW spindle to start with! It's not much more than the 1.5kW spindle, takes the much larger ER20 collet, and although I suspect it is a little heavier, I can't see any real world downsides.