Couldn’t find m3x12 nylon screws locally but 6/32 x 1/2 worked fine and it snugs down nicely. However unless I’m missing something altogether I’m seeing that as the fixture connects to the maker slide the clearance from your work piece is fully dependent on the position of your maker slide on the Z axis. And if you install the maker slide per Instructable’s directions with the base just a 1/4 in proud on the bottom, the fixture when slid all the way up will only clear 15/16 above the work table. Of course you can certainly move the maker slide higher on the gantry which may be just fine.
