Yes, much of the time it is. Software has gotten much more user friendly in the past 20 years. Prototyping and making fixtures, jigs and templates is very fast and accurate with little, if any adjustments needed.
Richard, I thought you were against CNC tech in a wood shop. Why the interest in this? Certainly not trying to start anything, just curious.
Yeah, most likely a venting issue as everyone says. The reality is that it could have been setup incorrectly in the past, but a new toilet with slightly different flow could be exposing the problem. It's also just possible a stupid bird tried to start building a nest in there during the week the toilets were replaced. This happened to my parents. Birds are dumb.
Well so far the only action I've taken is something approximating the advice of wdwerker in the very first reply to this post.
Two or three weeks ago I wrapped this piece, along with the others, in black plastic with sawdust inside.
I didn't weigh the table until last weekend because I didn't have a scale until then. It weighed in at 105 lbs.
So far there is no visible cracking or splitting.
I'm still contemplating the PEG treatment, but not finding very satisfying resources so far. It is expensive and there are few vendors. I'm trying to figure out what is practical, how small I can make the box for the PEG bath and if my idea for drilling holes for PEG reservoirs would really amount to the 2" penetration from each exposed surface, the way PEG specs in manuals. .. I see there are a few members in this community who use PEG, but it is mostly only mentioned in passing. I will probably start a new thread dedicated to PEG talk.
Here is my general idea, (drawings will have to be redone more accurately if I end up executing this plan):