Well, as my previous thread, I did not have luck with the "instructable" cnc build. I think that the designer gets 100% credit on his "out of the box" ideas, but personally, I didn't like the belt drive system, along with the weight of the MDF and it's quality. I also thought it could have a little more simplicity to the machine. I like to see complicated vehicles and parts, but not machines. So my new build will consist of a Hybrid style. MDF, aluminum, and steel. So far, my parts list isn't the best, but decent.
I plan on using my skate bearings for the X-Y-Z axis, but instead of the rod-track I am going to use square aluminum. I will explain more later.
My drive system is the HobbyCNC 3-Axis kit, and all driven by shaft (threaded rod).
For my previous build, I used a router as my cutting machine. The router is for wood, obviously; mine will be a different design because i want to mill aluminum. I have an idea on how i'm going to do this.
The router is only usable for 1/4 shank milling bits. but since i will be milling smaller parts that need 1/8 and smaller bits the 1/4 shank to 1/8 milling is expensive. But the 1/8 shank and 1/8 milling is a lot cheaper. So I plan on using an older style drill chuck. This way I can use shanks from 1/8 to 1/4 and in between. My idea is to take the assembly out of an old drill, use the chuck and the gear reduction units. Then, get a high torque-low RPM motor. 550 size. This will be light, and rebuildable and will allow adjustments for higher RPM motors to higher torque motors. Another Pro about this, is weight. The Hobby CNC steppers isn't very strong, so i would like the machine to be light and strong as possible.
so far this is only built in my head, I still need to swipe the easy card to order the stuff (flame2).
I should have updates within this next week or so. :cheers: