USB-C-PD Soldering Pen for Weller RT Tips

I've done a side by side photo of the RT Pen and the original Weller.

When about the half wattage is enough, much table-space and cash can be saved with RT Pen. The RT Pen includes every feature for hobbyist usage. 

I've tested the the RT Pen with the new GaNFast power supply from AUKEY (PA-Y21) with 30 Watts. Worked fine, and is even smaller and more lightweight than the used from ARTSYN power supply. 

Here are some photos of the comparison:

The order of the 3D-Printed cases just arrived. I'm very impressed by the precision and surface.

The three joints from the cap to the main body printed as expected. To remove them just cut them near the cap than  do break/cut the remaining joints off with a small flat screwdriver. Very easy and time-saving when doing larger batches.

The parts are made of Nylon and have a nice semigloss black finish with an rough surface which has a very good grip and feel. No fingerprints are visible on the surface. 

For now I used the not so nice cut old stickers I had here but im currently working on new one. 

The sticker at the USB-C side also secures the -already tight in place- cap from falling off.

Here are some photos:

With the PCB already inserted, the following animation shows how the remaining parts are put together.

New, slightly improved design is just put into production in a professional 3D-Printing house.

I've chosen Nylon PA12 with an 80µm layer height in semigloss black.

The prize @100 pcs. comes down to a few Euros.

This is a render of the current CAD model. Optimized for one-print-job. 

With the new design the cap can be hold in place by the top-sticker or additionally with a wraparound-sticker. Fits perfectly now with the USB-C.

All new PCB’s are fine. Just a little SW adjustment due to a new OPA.

This is the current version of the housing, now with labels on the buttons. The button size is also increased for better pressing feedback.

Outer diameter of the housing now is 12.5mm. Nearly the same as the rubber grip on the RT Tip.

Just finished programming the USB connection directly from/to the STM32. Next step will be to implement an emulated EEPROM because there in no dedicated data EEPROM on the used STM32.

New housing design is also finished.