Slots Are Good For You

As I have been piecing together this CFC mount, I had a revelation.   Once I explain, you will realize that I am not the first time have Aha! moment.

If you know exactly the dimensions of what you are building to the .01" range, you just measure and build.  If you are working from your imagination,  you will find that you need room for changes in those dimensions. 

The mount has some components whose exact relationships are not entirely clear.   What I am doing is holding these parts together with screws.  I use slots to let me move the parts relative to each other.

As an example this slotted part allows me to attach it to the tube assembly and still move it up and down (z-axis) to adjust position of the motor assembly.  

Similarly,  how this attaches to the underlying base plate gives me movement in the x-axis.  Slots in the last piece allow movement in the y-axis.

My plan is to make these slots long enough (typically an inch ir more) that even substantial movement is possible.  Once I have made a part of Delrin and I have adjusted everything to the right positions, I can make the parts of CFC with the right dimensions and much shorter slots (say, .25" for fine adjustment).