Dave Fawthrop wrote:


No! fingers can detect 1/10,000 inch, so the comm is good enough.
Classic test with jo blocks.

Don't have any and my rudimentary micrometer doesn't notice anything.

| but there
| does seem to be a vague click as the damaged segment passes the brush.
|
| Should I ready my junk bin for the imminent arrival of the arm?

:-)

So what is the conclusion? Individual components, except for brushes,
are not available. Only the whole motor (new model including control
unit) is available at £100 plus.