3rd PCB test was a success, holes match to the double-sided back and no traces bridged. Had to create a Double sided Jig in Rhino3d/Rhinocam. The facing toolpath let you edit the start point of toolpaths. Which worked great with a 1″ surfacing bit. It has a finnicky way of letting entry cut come from the side. Kind of randomly picks it. Had to create two toolpaths. The facing toolpath let me cut the southeast section with the entry cut coming in from the side so that it wouldn’t plunge in. The second toolpath pocketed the other top left half, plunged successfully since the first toolpath cleared the way. Came out super smooth.

Also zeroed the XY datum manually using grbl commands in the Carbide Motion MDI. This lets me set the XY datum exactly every time. Something that may move over time depending on belt stretch. Also used bitsetter to set the z, seems like I get reliable repeatable results using it instead of doing it manually and dealing with user error when setting Z with a piece of paper.

Fast Jog to Southeast corner first then input these commands separately
g91 g0 y239.5
g91 g0 x-247

GRBL 1.1 commands
G91 (incremental positioning) G0 (fast travel) x-100 (move x100 units)- negative value goes in other direction

So I know run a production test on double-sided pcb and then wire it up and test it. Also drill holes for enclosure. I bought a laser for my drill press. Which reminds me I have to realign the drill press belts to get more RPM.

Got the idea of the jig from the following video, I tried different Carbide 3d square but the issue was making it completely square for the flip, which you don’t have to worry about on a Nomad. When you remove the wasteboard to add the threaded inserts, when you try to line it back on to the machine, it comes out crooked, the slightest off angle fucks up the flip. My 2nd test was not even a half degree off but the flip was fucked. The key is mounting the wasteboard with the inserts and then cutting out the square while it’s in place so that there is no wobble.