Do your drives have tuning for mid band resonance?
Hood

I'm sorry, circle pocket works fine, but the Roadrunner is very slow and also a lot of noise. Another thing is that when I run the Roadrunner the router almost doesn't move but the motion on the screen move fast.

Marcin,

Just a thought but the Roadrunner code is in imperial units. If you machine is set-up in metric units the roadrunner image would be only 7mm x 6mm. (you could try putting a G20 at the beginning of the code)

Tweakie.

Hello,

I added G20 at the beginning of the code but didn't help, is still this same. Regarding the tuning for mid band resonance, I don't know what that is.

Here is another think. First when I got that machine I had the problem with getting the router to work as the step motors didn't move at all. In one of the posts Tweakie suggested that the old type controllers doesn't work wit the new PC as the printer port voltage is to low and that was it. I bought the buffer board and that worked. But maybe the controller that I have is somehow just not compatible with mach3 ?

What type of controller board is it ?

Tweakie.

Toshiba  TB6560

Here is the link to ebay page:
http://cgi.ebay.co.uk/CNC-TB6560-3-Axis-Stepper-Motor-Driver-Controller-Board-/250789782935?pt=UK_BOI_Industrial_Automation_Control_ET&hash=item3a643c6597

I think that your problem is not really a problem.

You should try to build stepper damper, this will eliminate a lot of vibration.

http://www.cnczone.com/forums/stepper_motors_drives/32284-my_take_stepper_damper.html


Jeff

Hello,

Thank you Jeff for your advice. Gerry from Cnc zone was suggesting this same thing. There is nothing else to try so this must be it. Is there any place that I can but stepper dampers ? Or maybe there is some step motor that comes with some kind of build in steeper dumper inside ?

Thanks,
Marcin

I just watched the videos from one of the posts. This is just amazing. You are right, that will fix everything. I must to find the way to fix the dumper to the motor. I have no shaft on the back on my motors.

Thanks,
Marcin

You could ry mounting it to the other end of the screw. Some people have had good results by using a hockey puck, drilling a slightly under size hole and just pressing it onto the shaft.