I built my enclosure, got my dust collection on point, flattened my wasteboard and when I went to carve the grid pattern the bit was too short to reach. So the question I have is do I pull up the wasteboard and install another 3/4" board under it and start over or is there something else I can do?
Shouldn’t be. What holes did you use to mount your router on the z-axis? Maybe you have that up to high? If you are short just a 1/16" or so needed for the grid, why not just extend the bit out of the collet the 1/16"?
That photo shows that the bit will plow right through your surface, smashing the router against it if you lower your Z working/cutting height all the way. How much lower do you want to go?
(Aiph5u (not affiliated with Onefinity))
the surfacing bit was long enough but the bit you want to use for the grid is shorter? Do you have a weblink to the bit’s specs? You could buy a longer bit.
The problem is known which is why at least on the Original Series Assembling Instructions (I don’t know for Elite) Onefinity suggests a rather thick wasteboard which makes you loose Z travel effectively. The reason lies in the fact that the Onefinity Z assembly and milling motor mount strongly differs from what is usual on gantry-type cnc machines: