I have never gotten into 3D printing myself (yet). Interesting thought though. It needs to be heat resistant and no off-gassing when heated as well as odorless. A tough goal for something that needs to be melted to form.
Another medium is to stick with the theme and use more SS piping.
Here is a prototype I made a while back and gifted it out.
This is not as easy as it first looks. The top lip is critical to hold stuff in place. I used a second SS tube that the OD equals the ID of the outside tube. I cleaned the top of the larger tube heated it till red hot and hammered the smaller tube into the heated larger tube until it was about 1.5mm into the top. It was a very tight fit and had to hammer the hell out of it to get it to go in. The piece I hammered in was a couple of centimeters hanging out to handle and hammer on. After it cooled down, I cut off this access in my lathe. Then evened out and polished. Drilled out the intake holes. I see in the picture some SOS pad soap residue still in them.
The rest is just installing the Orings from the bottom. 4 first to be the holder for the stem, followed by a larger screen. I found I had to use thinner Oring below as the #113s are too thick. Insert 2 and push up against the screen, then 2-3 more on the heater tube pushed down to the bottom. Now the heater can be inserted up into the tube and if measured correctly, the heater top should just touch the screen. I can't remember all the SS sizing.
The benefits: Built like a tank and will last virtually forever. Same great "Project performance"
The downfalls: Gets quite hot to touch. Not burn hot but sensitive skin ouch! Also, quite heavy weightwise.
The Eraser material was great but needs a lot to get set up. Jigs and molds.
The best is still a good hardwood but takes a lathe.
Have fun!