Aiph5u
(Aiph5u (not affiliated with Onefinity))
10
Hey Larry,
the advantage of “Secure from beneath” is, with self-drilling chipboard screws, you do not need to pre-drill anything into the wasteboard slats. But…
I find “Secure from above” better because you can leave your CNC in place when you attach the wasteboard slats. And regarding the holes you need to drill for the countersunk bolts, you can create a toolpath for a new wasteboard slat set and simply mill it everytime you need new ones and you can even cut the slats out all with your CNC machine.
When drilling the holes for the countersunk bolts for “Secure from above” by hand I suggest this: