3DP flat coverf for dial indicators. I actually dont use lug backs very much, usually I try to grip the indicator on the stem with appropriate holder. Of course you could keep going with backplate design features like magnet version, maybe dovetail version, or any other kind of benefitial feature for orientating the indicator to work, especially custom situations.
Just a word of caution. If your printer is not dialed in & it doesnt print the screw hole location layout sufficiently accurate, for example an aspect ratio deviation, this can get you into trouble attempting to screw the teeny (typically M2) screws into their holes if they are not lined up perfect &/or proper screw clearance. Dont risk stripping the threaded holes until you are 100% sure they will engage with no cocking or binding. Similarly if your design has lip thickness, be aware of screw length as most of the dials seem to be blind holes 9risk of bottoming out pematurely & stripping threads that way). Some dial bodies have a recess & I think its a good idea to make a matching boss in teh cover plate making it more debris proof. But others, like my Mitutoyo shown, is flat faced.
