3D printing can make some neat stuff... like fishing
We're still in the "early adopter" stage. You can experiment
with the capabilities, but there's no real standard for the machines.
I was an early adopter of CD-WORM (Write Once Read Mostly) which eventually transitioned to our CD-ROM, CD-R/RW, then DVD
and Blu-Ray on the same size disc.
The first CD-WORM drive I had was just 200 mb. Nothing made can read those old discs now.
Maybe 10 more years and you will be able to feed used grocery bags (if they use appropriate plastic) to your 3D printer and actually get useful parts for the boat.