https://youtu.be/tkxeK2vOvC4
if you are a railroad buff and have a very large 3D printer - you might want to watch this 3 minute video just saying -- You received this message because you are subscribed to the Google Groups "massfire" group. To unsubscribe from this group and stop receiving emails from it, send an email to massfire+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/massfire/CAFXWwKb-uS8zYKT5Ok28ku5Bq5Pswj4ojMo7FsWL1p6WHLt1Cg%40mail.gmail.com.
