Sunday, June 6, 2021

One more bridge

There are already 6 through truss bridges on the layout but I will be adding one more in the next expansion of the layout.  This one will represent the bridge that was on the Southern Pacific line on the east side of the Palisade tunnels which served the line for more than 100 years but was demolished by a derailment in 2008.

For this bridge I choose to use the brass kit from Micron Arts.  I have only done small brass kits up to the point and this by far will be the most complex one I tried.   I've had this kit stashed away for some time and honestly have been a little intimidated by it's complexity.


The most difficult part seemed to be the first step of the kit assembly.  I found that adding the webbing to the vertical uprights to be quite challenging.  After trying both soldering a gluing these and destroying some of the webbing parts I gave up and decided to leave the webbing out.  I cleaned up the solid parts of the vertical uprights and pressed on and then things went together more smoothly.

Taking my time in building this kit it still went surprising fast.  I was soldering most of the parts and did not have to wait for any glue to dry.  The finished assembly was quite strong and sat squarely on it bridge shoes.  In the photo below it is placed in about the location where it will eventually be installed.

Somewhere I read that brass models should be soaked / washed in vinegar before painting to slightly etch the surface so the paint will adhere better.  I let this soak for several hours and also used an old toothbrush to wash away any solder flux that might be left in the corners.  After the vinegar soak the model was rinsed and left to dry overnight.

Lately I have been trying out some paints from Mission Models and like them.  Using my airbrush I first applied two coats of their gray primer.  The coverage was fine but it took 2 coats to get all the different angles of all the parts.

After letting the primer dry overnight, I gave the model 2 coats of what Mission Models calls tire black which is a flat black.

Now being finished except for some weathering, this will be put away until construction starts on the next expansion.  I don't expect that to happen until winter at the soonest.  The kit came with a section of code 55 bridge track the same length as the bridge.  I won't use this as I like to use a longer section and replace the bridge ties on both ends with standard ties so the joints are well clear of the bridge ends.

1 comment:

  1. Nice work Brad, that bridge has turned out really nicely.