Compliant tube based headphone pad idea I had while riding a bicycle two days ago. I got the thickness and dimensions dialed for printing and bending, but I either need to setup my old KP3 kingroon with a longer 2040 Z extrusion or print this in 2 pieces. Either way, the joint connection needs more than just the overlap and glue. TPE would probably be better too, although I have no idea what shore hardness this $10 clearance spool of TPU has. The sound quality seems a little tinny and I have no way to tell how loud it is externally, but it is just my first iteration that I can put around my ear and test. TPU is so slow to print and the moisture levels impact the qualities drastically. I actually like the texture and properties of wet TPU more than dry, but it is hard to get it just right. With the design’s compliant bend, consistency is kinda important. Anyways, just another boring project. On the bright side, this seems cooler temperature wise when the TPU pad is against my ear.
I spent all day chasing custom logarithmic infill patterns that might incorporate a compliant bend but only learned about how not to do a thing like that in CAD.
“But I only eat canned food!” Canned food containers are plastic lined, but don’t worry - we’ve moved from BPA linings to less studied linings that are totally safer in the long run
“Paper cups and containers!” If it’s touching something wet, odds are they have a plastic lining
“But I drink soda/beers out of metal cans!” Oh, hum
“Glass containers!!” Many have plastic on the metal lids
Etc etc. If you eat out you’re eating tons of food that was heated and/or kept warm in some kind of plastic liner.