On Apr 25, 2025, at 7:07?PM, J. Kindraka via groups.io <kindrakaj@...> wrote:

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I haven't been very productive lately, sorta in the doldrums.? To try and break out, I took the stainless Code 110 wheelsets I bought over the winter and began setting up an assembly line to build some 70 and 100 ton trucks.? Extra trucks are always nice to have available, especially when you are in the midst of an interesting model build.

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I make several of my own brass trucks to help add weight to freight cars and lower the center of gravity.? I also like them because the side frames are less apt to shatter when, while you're not looking, they roll off the workbench onto a concrete floor - we've all been there...

That said, I'm experimenting using 3D printed Nylon bolsters.? They can be made (relatively) inexpensively using the SLS (Selective Laser Sintering) process.? Basically, the laser fuses together particles in a plastic powder bed to the shape called for by the 3D file, no support structure necessary.? The surface is not smooth so I never use SLS for parts where smooth finishes need to show.? It can be dyed black before forming, so no painting is another advantage.? Brass bolsters are nice, but they are very unforgiving when it comes to construction form and fit, and tighter when sprung.? Being a lazy person, I'd rather not spend a great deal of time filing.? I'm finding the SLS-made bolsters fit easier and equalize a bit better.? We'll see how they hold up over time.? Anyway, that's what I'm up to, a couple photos attached.

Jim Kindraka

Grand Rapids, MI

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