morphl

Been printing some larger pieces and containers with larger wall sections 1-5mm thick, >20cm wide/high out of HIPS/.. recently. Have been doing it with a Bambu A1 in a "tent" and a heater that brings the air temp up to around 45C. Printbed adhesion is there with glue.

Big issue I face is that these pieces tend to show stress cracking in all directions either during chemical smoothing with eg acetone for HIPS, or being exposed to heat to around 70C.

Is it possible to temper these printed pieces somehow to release/even out stress without loosing shape by heating to the materials Tc followed by a soak and slow cooldown? In an regulated oven for example. Would be happy about feedback from prac

Hi

Currently working on an 3D printer with a screw extruder printhead, and I have this issue of the nozzle constantly oozing. In part this comes from the screw extruder screw and barrel not being shoved against each other well enough. The extruder screw is connected to a motor with one of these aluminum coupling parts (like round cylinder shaped, with screws to tighten against the motor and extruder shaft). Are there some that would be sort of self tightening on the long axis, by having something like a spring that pushes it apart?

I see there are some with some sort of steel bellows, some helical cutout (makes the in between bit seem spring-like), or some perpendicular O-shaped bendy meta

Hi

My cat eats wet cat food from cans, and really likes the slimy bit. I guess it comes from cats not typically drinking, but receiving water from e.g. coagulated blood in prey. Sometimes I am a bit worried that he does not take up enough water during summer, as he close to never drinks. Does it have a name I can find it for cats, or know a formulation with a cat-suitable gelating agent (gelatin, aggar aggar)?

All the best

Hi,
Bit over two years ago I got into an abusive workplace situation in the US. During that time I developed a what I now know is a dissociative movement disorder, which once triggered will block my ability to lift my legs (and in turn also walk). More or less was left to rot in my place for ca 8 months while this worsened, at the end of my time in the US i could barely stand or walk, could not get groceries for a long time myself, and was not able to cook anymore. My workplace pushed my case under the rug - which I now know is not an isolated incident, but very common.

I had difficult experiences before, but never so straight up vile. For once I want to compile documents I prepared in t

Hi all We are hosting this friday at westcoast lunchtime 12:00-13:00 our first online "Disabilities in STEM seminar", in which Prof. Paul Bracher from St. Louis University will talk about "Navigating Coursework, Teaching, Research, Mentoring, and Travel with a Mobility-Impairment: A Guide for Disabled Chemists, Supervisors, and Allies". You can join the talk via Zoom (https://caltech.zoom.us/j/87980100978), albeit we also plan to archive them likely on e.g. our Caltech Postdoctoral Association Diversity Committee homepage in the future. The talk will be roughly 40 min presentation and 20 min Q&A, we also plan to have subtitles for the talks. A flyer for the first talk can be found here:

Had recently an interview with the members magazine of the German chemical society about studying chemistry with fibromyalgia. I can now share an English version of the article publicly, the original article was published in German here

We also recorded a podcast on the matter of physical disabilities during chemistry studies in Germany with members of the "youth" section of the German chemical society, it should be online somewhat soon.

I hope this can help somebody ..

Translation from German / Interviewer in italics:

"The worst thing is the lack of flexibility". *Falk Seidel suffers from fibromyalgia, a chronic di