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23
STEP 7: The Floor, Bolsters and Under Frame 75000 – 76499 Series
Continued ...
stock for the body of the I-beams. I cut two strips of 4” x
8” styrene to fill in between the bolsters.
These form the body of the I-beams for the center sill of
the car. I cut these to length to fit in between the bolsters.
I personally find that it is easier to cut them just a little
long, and then use the Northwest Short Line true sander
to get a snug fit.
23: The bottom flange of the I-beam will be 2” x 6”
styrene added after the floor has been cast. It seems
much simpler to do this method because:
1. I don’t know if I could cast the part with an
undercut that deep in the mold and successfully
remove it from the mold.
2. I am not sure that the flange area would fill
properly with the casting material.
If I couldn’t cast it I did not want to figure out how to
make a 2-part mold just to cast the bottom flange in
with the rest of the floor.
4" x 8" Center beams
cut to fit between ...
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