Section III – Part I |
Rear Vertical Supports
This is a good place to talk a bit about the build of the other two sections. Each section fits to other sections and those connection areas need to be dead on. This is where jigs to ensure that can be very helpful. Luckily, I have my Prusa I3 MK3 FDM printer which will allow creating such jigs. |
Front vertical Supports
The bottoms all lock into notches in the Jig tank frame and we can use the Top Caps/Stringers shown in yellow to keep them aligned (front to back) while the glue dries. Care needs to be taken with the side to side alignment – The Top Caps shown in green will help align everything a straight edge aligned with the jig tank will work for that. … and yes I moved the stringers and caps vertically a bit since the focus at this point are the support timbers. They (stringers and caps) would of course be locked to the supports (no glue) to act as jigs while the glued supports set up. |
![]() Ha. This is where you have to be very careful and not be a klutz and knock these pieces loose before adding reinforcement from later pieces. |
Floor Supports
While butt joints would be much simpler here – the dapped joints are much stronger both in the model and full-size. |
Floor Boards
Note: There would have been sheet metal applied to surface this floor with metal. In “Mining Library … : Engineering and mining journal.” published in 1912 – “… and the inside is lined with sheet iron 3/16″ thick, in which the holes for the nails are countersunk.“ |