Spindle needs a lot of power and speed. But I have very limited resourced. First, I considered DIY style spindle but I cannot source right bearings and chuck or tool holder. So, I tried to use some small rotatory tools, PCB drill.
Some problems solved are:
- CNC stopped with limit switch errors in a few minutes and after started milling. I checked limit switches and used a lot of methods such as filters, shield and cables but it didn’t work. I measured spindle motor’s power line (it is 12V DC ) and noticed some spikes. So, I replaced stocked 12V DC power supply with a good old quality power supply and the errors gone.
- I know why everybody is talking about bed leveling. My first test did’t went well. I checked later that leveling error is about 2 mm from edge to edge of the bed 😦 . Some said http://chilipeppr.com/tinyg but I preferred stand alone program and this worked fine.
- The only problem is I used WinXP and the program required .net ver 4.5 and this version didn’t support WinXP. So, I forked and recompiled with .net version 3.5 and Visual Studio Express 2012 to support WinXP.
Unfortunately, they cannot do the jobs well. Seem RPM is low and tool holders is vibrated a bit. So, I tried small rotatory tool and it does the job for the first time.
I did some tests for 1 mil , 2 mils and 4 mils PCB tracks. The result is not so bad for the first run.
I don’t have proper CNC bits and waiting for the ordered bits for now. I will write a post about some final touch and tips and also about PC software soon.