You don't need nutplate jigs, but they sure are nice to have...
#6, #8, and #10 will probably find a use...
You really don’t need a jig unless you want one. Just as easy to use a nutplate as its own jig.
You can use one as a jig by putting a machine screw with a hex nut on it through the part and into the threads of the plate nut. Then spin the hex nut down to clamp the plate nut in place, drill through one ear, put a Cleco in it, and drill through the other ear. One of the side benefits is that you will never install a plate nut that escaped getting threaded during manufacture (which happens once in a while).
You can use one as a jig by putting a machine screw with a hex nut on it through the part and into the threads of the plate nut. Then spin the hex nut down to clamp the plate nut in place, drill through one ear, put a Cleco in it, and drill through the other ear. One of the side benefits is that you will never install a plate nut that escaped getting threaded during manufacture (which happens once in a while).
I believe the last one I bought (#8) was $10 from The Yard. I love it, use it all the time. BTW, I also use OPPS rivets with the nutplates.
When I started my 2nd -6, I vowed to get every convenience tool I was too cheap to buy for the first build. That included a pneumatic squeezer and cleco pliers and others. But the very first thing I bought was nutplate jigs, #6 & #8. Well worth it. I'll probably add #10 just because.
Just received my #6, #8, and #10 from the Yardstore.