Very nice tutorial. I went through the polymer in water tutorial. I wasn't able to run the first part as I don't think the create_atoms overlap/maxtry arguments were introduced until 2022 and I have a pre-installed 2018 version. With your intermediate results included, I was able to continue.

At the very end (https://lammpstutorials.github.io/sphinx/build/html/tutorials/level2/polymer-in-water.html):
fix myaf1 oxygen_end1 addforce ${f0} 0 0
fix myaf2 oxygen_end2 addforce -${f0} 0 0
Should be topull1/2, I think.

If I could make a suggestion, the front page has three images and gives the impression these are the only three tutorials while actually you have more, also you can only see what the tutorials are by hovering over the picture, so people might not realise you have a tutorial relevant to them. Perhaps you could change this.

Hi guys,

Thank you for this very nice tutorials.

I have encountered an error when I follow Pulling on a carbon nanotube.
The command delete_atoms random fraction 0.02 no rdel NULL 482793 bond yes always reported ERROR: Illegal delete_atoms command (src/delete_atoms.cpp:73)

Could you help resolve it?

Best,
Huang