All,
I have built a DIY CNC machine out of MDF with THK linear rails and ACME threaded rods and nuts. The limits of the machine are 30" x 20" x 10".
I have built a mount for the a Rotozip. Up until now I have only used the machine to make cute little engravings in MDF. It has worked well for that. I ordered the HobbyCNC kit with motors and installed them. I can now move much faster and smoother.
I then ordered some 1/4" diameter / 6" long carbide ball end mills. I was hoping to run some parts this morning, but ran into a huge snag. The runout on the end of the bit is anywhere from 0.060" to 0.120". YIKES!!!
The Rotozip I got is refurbished from Amazon. I realize my bit is very long and I will likely have some runout at the tip. My questions are:
Is this typical for a Rotozip to have this much runout???
Would getting a new collet set from Home Depot possibly fix the problem???
Would getting a new Rotozip fix the problem???
Should I upgrade to a laminate trimmer (like a Porter Cable or Hitachi)???
Budget is important and my machine is not too strong so I need to keep the spindle as light as possible. By the way, right now I am cutting all kinds of woods (oak, pine, mdf, etc). I would like to eventually cut aluminum. I can handle taking light cuts and taking a long time to get a part as this is not a production machine.
Thanks in advance,
Andy