Re: New machine 2 day progress
You will be disappointed with the speed you get with the one start ACME. This is one critical performance thing that you really need to spend some money on. It will get the machine running, but that's about it. Two start will be better, but five start or eight start will give you much better results. One common mistake is to think that 30 inches per minute is fast enough to get started with. That's about all you will get with one start ACME screws. For cutting wood it is woefully slow. Aim for a reliable 200 ipm cutting speed as a minimum. Don't even consider all-thread rods. The drive system mechanics, motors, and drivers you buy will make or break your interest in this effort. There are homebrew designs on CNC Zone for anti-backlash nuts. DumpsterCNC and CNC Router Parts sell reliable ones if you don't want to try making something.
24 vdc power supply, cheap poorly designed drivers, and high inductance motors all contribute to frustration and problems getting the machine fast enough and reliable enough to be useful. Been there and done all of that myself. As many others in these forums have also done. We eventually cough up the money to build better machines if we stay in the hobby. It's part of the learning curve.
CarveOne
http://www.carveonecncwoodcraft.com