[mistercrash]

Those could work Molak. The ones I used I found at Tower Hobbies. They are distributed by Dubro. They don't come with metric threads so I got some 4/40 brass inserts which I tapped with M3 threads and some 8/32 inserts which I tapped with M4 threads. A trick I use to screw the inserts in the plastic is to heat them a bit with the flame of a lighter or even a heat gun. I heat them up just enough so they are easier to screw in the plastic. I let it cool and then I can extract the screw that was used to insert the insert.