A moveable gantry can be made just as stiff as a fixed gantry. It may not be as easy to do, but it can be done. Most people go with the moving gantry because you only need about 60% of the length for a given cutting length. You'll also need a longer linear bearing setup for the moving table, which could cost a lot more if using high quality components.
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Gerry
Mach3 2010 Screenset
http://home.comcast.net/~cncwoodworker/2010.html
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |