I happened upon Boya 35C-XLR, 3,5 mm jack to XLR adapters and they are inexpensive (around 10 USD), full metal (aluminium) and well made.
There are two versions: one, shorter - 58 mm, just plain 3,5 mm socket wired straight to XLR plug and, longer ("PRO") - 68 mm, with a PCB inside providing 48V to the 3,5 mm socket.
They make for a really great mic body. Being metal nicely shield the capsule and are really sturdy.
I mounted AOMs 5024 in them, powered by SimpleP48 and they work great.
The thing is they're bear to disassemble. Therefore one need to have basic tools and some technical dexterity.
One - the aluminium fine threads have nasty tendency to lock up. Two - there is a bit of thread glue used..
I had to make jigs/holders to squeeze both halves really strong to unscrew the body. Simple but necessary. Made from scraps of MDF I had laying around, the cutouts (22 mm hole saw) covered in thin layer of silicone. One jig is clamped in the vice, the other by carpenter's clamp. A sharp hammer tap on the clamp breaks the bond and the halves can be unscrewed.
(I scratched the first adapter with hand grips even through some leather and rubber band).
For the 3,5 mm socket I use a remover for broken bolts. Sure, it ruins the socket but I do not need it. Otherwise its thin edge is almost impossible to grip.
Then the hole left by the socket must be drilled out to 10,5 mm. No deeper than 5,5-6 mm! AOM capsule in thick heat shrink plus a bit (~1/4 turn) of electrical tape fits nicely and securely.
From then on everything else is straightforward - unsolder all original wires, solder together all of the numerous components of the SimpleP48, remember to thread wires from the capsule through the plastic collar needed to hold XLR plug in place, forget about it, desolder wires, thread through the collar cursing one's own stupidity, solder to the XLR plug, twist the top (with the capsule) counter-clockwise several turns before screwing both halves together. It takes good several turns to screw it all together - you do not want to rear out the wires.
Done! If you do not mind the BOYA logo on the side
and do not want to hunt for LOMs - they're pretty nifty mics.
