Micromill irregular circles ?

[rpm]

Hi I have a micromill 2000 using vr milling 2.31 and quickcam 2d design when I cut out a circle it is allways irregular and not a true round I'm new to this game and would welcome anyones thoughts please.

[bradders]

Make sure all the axes dovetails and lead screws are well lubricated. One or more of the axes may be stalling slightly du to that lack of lubrication

[Denford Admin]

The micromill can usually cut quite accurately for a relatively cheap CNC...but you must ensure there is minimum backlash on the screw nuts.

There is some good information here:
viewtopic.php?f=36&t=1419