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The object in the image is 120 by 60 mm, the inlay in the middle is 80 by 20 mm.MagIO2 wrote: You don't tell us which size your work-piece and which diameter your planing tool had, but I think "just feel" is the problem. ;o)
Your remarks are very much appreciated and I will follow it up.MagIO2 wrote: As you also did not say anything about the way how it's been milled (do the lines go X or Y direction? How big was the overlap? ), here is some wild guess-work....
I know for certain that the motor is not always in the same position after replacing it. I have seen it before and since then I'm carefull in checking that the motor makes good contact with the plate it rests in but there is no guarantee that it is level.MagIO2 wrote: possible causes:
Motor is not sitting perfectly straight in the tool-holder, where one side lifts up a bit. (Might happen due to thicker paint) Recently there was another thread which complained about a tool adapter which was not sitting straight in the tool-holder.
Good points, didn't think of that yet.MagIO2 wrote: Endmill is not sitting perfectly straight in the Motor.
Portal is not parallel to the table (right side just a bit lower/higher than the left side).
It was planed,... some time ago. Another point to check.MagIO2 wrote: The machine table cover layer (?spillboard?-dictionary did not find a translation) has not been planed.
I did some cleaning afterwards and where the circle meets the rectangualr some cleaning was required and the depts were very shallow. Also, the inlay part had some tiny breakout at that point. So, what you notice might be introduced manualy by me.MagIO2 wrote: ...
PS: Backlash is not the problem for that kind of lines, but having a closer look at the circle ... there might be a backlash problem on top. If things are not fixed well enough, I'd expect not to see any straight line being milled.
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MagIO2 wrote: One more ...
In the end the big endmills make the problem more visible, than a smaller endmill would do.
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