Drain traps

I'm keeping watch on any useful things made from plastic that
might be reprapped some day. I just found this:

[www.popsci.com]

Clever invention, and made from ABS-plastic.
I wonder if one could print anything similar with a 3D-printer,
and would the printing resolution be sufficient to make
the required threaded couplings tight enough?

Here's something related:
[www.noclogttrap.com]

How about the patents? Do they apply if you print something patented
just for your own use?

Personal use of patents vary by country. I read personal use is legal in the EU, but not in the United States.
I believe that if you are doing 'research' you are always on the right side of the law.

Hmmm...I wonder where our server is right now?

I need to be ready for the first takedown notice for the library. Bleeergh.