Looking for the impossible? A cnc router for 1k? is it possible?

[ecat]

<shrug>
From the equations you can see that the difference in deflection between a beam simply resting on end supports and one rigidly supported at both ends is about a factor of 4 (192 / 48 taking simple cases). So the difference in deflection between fully rigid and 'kind of rigid but with poor bolts or wobbly walls" must be less than that factor of 4.

Edit
δ = FL³/192EI vs δ = FL³/48EI for those who don't like links.


Anyway, I dug this great resource out of my bookmarks, http://web.mit.edu/2.75/resources/FUNdaMENTALS.html . It is heavy on the maths but has lots of pictures so well worth a quick once over. The videos don't appear to work any more which is a shame, or maybe I accessed them by other means. If I remember correctly, one of the guys main tenets is "stop thinking of everything as rigid and firm, starting thinking elastic and floppy".