FreeLance Caboose Build

FreeLance Caboose Build

Postby Bernd » Sat Feb 11, 2017 11:37 pm

While I'm waiting for my Kerg Pocket Screw jig to arrive for the building of the first module. I decided to keep occupied by designing and eventually building a freelance caboose. I've been practicing using my 3D CAD program to draw up the bottom.

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That's about it for now. More to come as I get ambition.

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Last edited by Bernd on Sun Feb 12, 2017 9:17 pm, edited 1 time in total.
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Re: FreeLance Caboose Build

Postby areibel » Sun Feb 12, 2017 11:10 am

Looks Good! Are you going to mill it or send it out for laser cutting or 3D printing?
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Re: FreeLance Caboose Build

Postby Bernd » Sun Feb 12, 2017 4:11 pm

areibel wrote:Looks Good! Are you going to mill it or send it out for laser cutting or 3D printing?


I'm looking at a resin casting. I'll use styrene for masters. May use the mill if necessary. I don't care much or 3D printing yet. To slow and costly yet.

The caboose is actually a composite of two I found in the model magazines. The top one is an HOn3 model by Jack Work written up in the December 1957 Model Railroader. The bottom on was written up in Railroad Model Craftsman in February 1967.

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I'm using the bottom one for dimensions since it is standard gauge.

I got a little further in drawing it up in 3D.

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Re: FreeLance Caboose Build

Postby Bernd » Wed Mar 01, 2017 8:45 am

Waiting track supplies I started work on the caboose by making a jig and building up the frame from .040" X .080" styrene strips.

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More info here: http://www.kingstonemodelworks.com/TTcaboose.html

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Re: FreeLance Caboose Build

Postby ConducTTor » Wed Mar 01, 2017 11:52 pm

I'm going to start calling you "Jig".
What people think: "liberals/conservatives are ruining my country"
What the powerful know: divide and conquer
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Re: FreeLance Caboose Build

Postby Bernd » Thu Mar 02, 2017 9:02 am

ConducTTor wrote:I'm going to start calling you "Jig".


Hey the "Jig's" up. :lol:

Well, it's one way of accurately assembling small parts. Fortunate thing is that I was a machinist in my former life. :shock: :wink:

If this model looks good once I get it done I'm looking at trying to cast it in flat sections out of resin. The nice thing about the frame is that it's a standard for flat cars, gondolas, box cars, & refers. Time will tell if this will work out.

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Re: FreeLance Caboose Build

Postby Bernd » Thu Mar 02, 2017 12:52 pm

The caboose frame is done. Next will be to install a set of trucks to check for proper height.

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More info here: http://www.kingstonemodelworks.com/TTcaboose-2.html

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Re: FreeLance Caboose Build

Postby j p » Fri Mar 03, 2017 4:28 am

Bernd, you can find the recommended bolster height in NMRA RP-23.
http://www.nmra.org/sites/default/files/standards/sandrp/pdf/rp-23_2011.12.06.pdf
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Re: FreeLance Caboose Build

Postby Bernd » Fri Mar 03, 2017 8:14 am

j p wrote:Bernd, you can find the recommended bolster height in NMRA RP-23.
http://www.nmra.org/sites/default/files/standards/sandrp/pdf/rp-23_2011.12.06.pdf


Thanks Jan. A while ago I made a couple of height gauges. Some how they got lost. Looks like I'll have to make a couple more. I think I even have a thread here on TTnut on how I made them. I'll have to do a search.

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Re: FreeLance Caboose Build

Postby Bernd » Mon Apr 10, 2017 8:49 am

It's been a while since I posted something on the caboose. I decided to build the whole car from brass. The previous attempt with styrene for the floor didn't work out to good, so brass was chosen. It took three iterations of trying to scribe 4" wide boards into the brass. I finally came up with a solution by using a carbide scriber and actually scribing the individual boards. I couldn't find a cutter that gave a small enough groove between the boards. I don't run the spindle, just use it to hold the scriber. I had to make a tool holder with a spring for the scriber to work properly. These are the first parts and need some improvements in the machining process. That's next.

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More to come.

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