`  == Amateur Projects ==  I feel that this sentence in the introduction, ``STM can be a challenging technique, as it requires extremely clean and stable surfaces, sharp tips, excellent vibration control, and sophisticated electronics,`` although mostly true, mistakenly gives the impression that STM is an inaccessible technology.  Many very innovative hobbyists have created their own STMs, some for very cheaply.  I attempted to add a clause to the end of that sentence to this effect, but Materialscientist removes it stating it violates WP:NOTHOWTO.  I do not feel that adding this information (with no instructions, just the statement) violates WP:NOTHOWTO.  Materialscientist, can you back this up further at all?  I agree it is inappropriate to describe in wikipedia how to accomplish many tasks, but I think it is very important that wikipedia not convey that these tasks are more difficult than they are.  I do not think it is wikipedia's place to discourage home science.  I intended the links only as citations, so my edit would not be reverted; I realize now I did that improperly and am editing a third time with more correct citations.`