LaPavoni Analog Thermometer (Post Mill) - Metal 3D Print

Objective

I always wanted to know the grouphead temperature of my LaPavoni lever machine in order to remove the related guesswork and thus getting more consistent results.
Unfortunatly all available solutions failed to match the general aesthetic of this beautiful machine.
So I've set out (and I think succeeded) to create an adapter, wich allows me to install a 40 mm analog thermometer, matching the 40 mm pressure gauges.

Making it

Because the purpose of this adapter is the transfer of heat, some parts had to be made from metal. But no worries, there are some providers who are happy to make your parts for you.

The required dimensions of the thermometer shaft is 8mm in diameter and 30mm in length.

You'll also need a M3 grub screw.

The total cost of this project was 160€, but I had some pastic parts printed aswell, which I could've possible made myself.

Parts

1. Heatblock (Brass)
   The heatblock contacts the outer wall of the grouphead on one side.
   On the other side, the thermometer is inserted into a hole in the heatblock.
   Made from brass, because of it's superior heat transfer ability.
2. Isolator (Nylon)
   The isolater is split in two parts, so you can actually insert it into the stainless steel cover.
   The purpose of these parts is to hold the heatblock in place, while thermally insulating it from the outer shell.
   I printed it from nylon, because it will be exposed to substatial heat.
   Required some sanding to make it fit.
3. Outer shell
   Mainly there for aesthetic purpose, so i've had it made from polished stainless steel to match the aesthetic.

Assembly

1. First cut an M3 thread into the hole of the outer shell (threads this thin can't be printed).
2. Insert the isolator whith the cylindircal part into the opening, the slide it forward
3. Insert the second isolator
4. Put thermal paste (the one also used on your computer, CHECK MAXIMUM TEMPERATURE RATING) into the hole in the heatblock
5. Insert heatblock into the assembly (it now should look like picture 3
6. Insert thermometer into the assembly, position it, then secure it using the M3 grub screw
7. Apply thermal paste on the exposed side of the heat block
8. Cover the bottom of Outer shell with epoxy (CHECK MAXIMUM TEMPERATURE RATING for the epoxy)(I've tried tape, but it didn't hold)
9. Stick the assembly onto your machine and secure it with tape, while the epoxy hardens
   DO NOT SLIDE IT AROUND, you'll just make a mess, so be careful while positioning.