Originally Posted by
louieatienza
You cannot push a router spindle at the feedrates a CNC can, and hold it as steady as a CNC. The variable speed controls on these handheld routers (which are NOT intended to be bolted onto CNCs by the way) CANNOT give you consistent spindle speeds, and you'd find when cutting material of varying densities (like wood) or even the occasional work in something denser (like Corian or even aluminum) that these router speed controls cannot keep up and deliver. You'd see fluctuations in speed as the tool enters and exits the workpiece, as the tool approaches a corner, etc.
I do suggest something good, a SuperPID, which keeps the router within a couple hundred RPMs of what you set it to (whether by CNC control or manually) regardless of the spindle load. This is a lot closer to what industrial spindles do, at a fraction of the price. You can fix that Makita speed control all you want, it will still bog down under load.
But what do I know? I'm a troll who just happens to be a Gold member here with over 4300 posts, and who actually does contribute to the forum (check the stickied thread at the top of this forum)... help quite a few here in terms of cutting aluminum, speeds and feeds, brought single-edge spiral-"O"-flute endmills to the masses, and yes... I find a SuperPID to be an invaluable yet inexpensive investment and good alternative to a spindle/VFD combo, and eons in improvement over the built in speed controller of most all routers (except maybe Festool, but who would mount a Festool to their CNC?)
And I don't shamelessly put links to my website in my signature in a way to circumvent paying for advertisement.