The front cross support and trailing truck pivot and the rear cross support and tender tow bar mount were glued to the rear frame side assembly prior to removal of the sacrificial inner support structure.
The inner support is like a ladder assembly attached to the side frames with short posts. Those will be cut away to remove the ladder assembly.
The Dremel tool is equiped with a cut-off blade to remove the posts.
After cutting away part of the posts prior to completion of removal of the ladder support stucture.
Shown above almost all the posts are fully removed.
After final post remoal the ladder support structure is removed leaving some residue of the posts still to be removed by grinding.
A round sanding wheel was used in the Dremel tool to grind away and smooth both the inside and outside of the rear frame assembly. Much of the outside will have attached parts for the trailing truck spring and equalization lever attachments. The inside is clear for the firebox clinker chutes which will drop down through with the exit doors below the frame bottom.
The finished rear frame is ready for installation of the trailing truck pivot, spring and equalization attachements along with the rear firebox mount and external cab mounts.
The trailing truck pivot is attached to located the training truck position.
The trailing truck rear sping mount, spring saddle mounts and equalization lever mount with lever are shown loosly set in position for a fit check. Later those parts will be glued to the rear frame.
An above view shows the opening down through the frame and trailing truck where the clinker chutes will pass to a point below the trailing truck frame.
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