I built a 36" x 52" 80/20 cnc router. I am using Keling KL-4030 drivers with a CNC4PC bob. I am running Mach3 on a robust dedicated computer with a parallel port on the mob.
Everything works very well and is a great tool for my business. I am in the process of promoting our new CNC capabilities and finding customers.
My concern is reliability. As my CNC customer base grows I want to be able to produce the best results possible. I have only had a few problems with missed steps, but I know that they can cause a nightmare on long running jobs. I don't think the missed steps have been caused by overloading the machine. The machine will rapid at 1000 ipm. I have it set up for 500 ipm rapids, and typically use a cutting speed of 240 ipm, cutting wood and plastic at .125" or .25" doc. I think any missed steps would have come from the computer.
Is the SmoothStepper the answer?
I would like hear opinions and personal experience about the SmoothStepper from other CNC builders.