Hey guys, this is my first post and I really hope this is in the right spot. Over the past few weeks I've started to design my fist cnc machine, it will use a dremel and have a mobile gantry. After a little reading I see that the dremel is not the most rigid thing out there, so my thought was to make a new housing out of aluminum. I have one drawn up in autoCAD right now but i'm not sure if it is overkill or on, would this help at all or are the bearings going to allow play anyway? Any help will be greatly appreciated.

This was designed for a dremel 400 XPR
Click image for larger version. 

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