Could you please share more details about the parts you used?
Obviously a PID controller and a compatible 25mm axial coil. The coil I've been lent had only 3 turns and I highly suggest to get one with 4 turns.
I used a brass plumbing plug (the one for soldering) to compensate the gap between the coil and the EMK. It also gives a better contact (more surface) than just the coil. It was available in the closest hardware store for 1 €.
You need to form the coil around the plug, then do a burn off. The burn off will slightly expand the plug and the EMK should fit just right. If it don't you'll need to work the inner diameter with sandpaper (I glued sandpaper on a wooden rod of the right diameter and fixed the rod in a hand drill to go fast).
You'll need a clamp of course because heating upside down the joint will be hot. While the ones from
@Shit Snacks looks nicer, I really like how secure the lab stainless steel clamp is on the EMK.
Keep in mind that there's a significant offset between the displayed temp and the actual temp of the thermal matrix. I think I used to run mine at 270°C. 10-15 min heat soak of the head is crucial for good performance. (but my enail was 12V so maybe its quicker with 110V or 220V).
I still think the EMK is better suited to be heated with a big torch. Or a Bunsen burner. Or a camping stove.