I agree with everything that you said. I have made small holes in aluminum using 1/16" end mills running at 1 ipm and 10% bite. On the average, a 15 -20 ipm feed rate works OK for aluminum, but as I mentioned before, some projects take forever. So I am experimenting with the router even though I know the micRo is not built for it.
In the picture file, I placed a phone picture of the router clamp. The bottom and top of the router have vent holes, so I may need to create splash guards for those areas when I use coolant, that is, if I ever get to that point assuming the micRo does not break.
I am self employed and work by contract so I get chunks of free time between contracts to pursue other interests. So I try to create things. I have been looking at Tormach 770 "personal cnc" for a while, $10k with accessories, maybe I can save up for that. Or maybe Robin is working on an upgrade machine. I have also been looking at Sprutcam; seems better that the cam software that I have that does not have reroughing/restmilling unless I buy the 5 axis expensive version.
Hello Robin: I sort of heard that you were involved in an upgrade project??
> Hi Mikau,
> Most of the milling I do is with ABS plastic. I've found that I get the
> best results with a single flute end mill, low RPM an a moderate feed
> rate of 12-30 IPS. For aluminum I need to use high RPM and a low feed
> rate; in fact, when stepping down into a hole I usually use about 2 IPM
> to avoid getting too much deflection. Putting a .203 hole through the
> base plate takes about 6-7 minutes per hole, using a .125" 4-flute tool.