Hi helpmebuild welcome to the forum! In order to answer your first question I would need to understand something about Onefinity’s assembly repeatability process, which I do not. And as far as I am aware, (someone please correct me if I’m wrong here) Onefinity has not made any public records concerning their assembly repeatability process. So take the following answer with a grain of salt. When I built my table, I had no idea if my Onefinity machine was going to match AndrewBrown’s model so I built in tolerances and contingency plans incase something did not turn out the way I expected. I am pleased to say that AndrewBrown’s model was very accurate for my application. The X axis alignment for the feet ended up exactly where I wanted them to be. I never checked the Y axis locations because the orientation of the extruded aluminum slots aligned in such a way to allow me to slide my CNC forward and back to a desired location. With this being said, Onefinity’s assembly repeatability process must have some good tolerances if they are willing to support and sell a secure from beneath frame. Food for thought.
As for your second question, I assume you are talking about the frame being independent of the table and thus allowing one of these two components to move in a vertical direction would achieve your desired result. If this is the case, there might be a way to do this with a lifting column (see the attached photo’s below). I friend and I were thinking about this idea a while back but never got the chance to put it into practice. More research would be needed, but it should give you a place to start. This subject was talked about a bit further on Onefinity’s forum here.
