At the MRH forum, Bill Lugg is documenting his build of the Cheyenne roundhouse using 3D printed walls. https://forum.mrhmag.com/post/laramie-wy-roundhouse-build-ho-scale-12349718

I'm seeing it on almost every print, unless I support the you-know-what out of it. What I'm gradually coming to is 1) orient the model so the least "favorite" sides and edges are interfacing with the

Oh, good put. So, I won't delete the edge supports, and add the underside ones. I'm not going to print another immediately though; going to shift my efforts to the drive train, and a different take on

New post on my DRG #168 project, designing and fabricating the cab: https://glenn.pulpitrock.net/blog/posts/2022-06-12_cab/

The drawing I have of #169 shows the firebox front back at least 3 feet from the tapered course, and the photos of #168 confirm that. For the other end, I don't have a precise measurement but I have a

Oh, I'll take any photos I can get. I have a bunch already, but it's amazing how you can go back home after such an opportunity and find you're still missing a view of some detail you're trying to mod

Indeed, the prototype has conical rivets. I'd originally coded the modules with spheres, then went to lay out the rivet courses on the smokebox; brought up a photo, zoomed in and gee, there they were.

Just finished another post on 3D printing #168: https://glenn.pulpitrock.net/blog/posts/2022-06-08_168_smokebox_boiler_firebox/

I started a blog to capture all the things I learn along the way building DRG #168. First relevant post is on design and fabrication of the frame: https://glenn.pulpitrock.net/blog/posts/2022-05-26_16

Reading the reviews, Blu sounds like a good functional resin. Ordered two additional vats with covers, so I can easily switch out resins.

Elegoo Plant-Based Tough. It's the bottle I bought with the printer. I ordered their ABS-like yesterday, to try with the frame.

Last time I posted something on my project, I was messing with laser-cut metal frames. Well, I've vectored away from that and am experimenting with resin-printing the frame. Results look promising so

Here's a screenshot of what I've modeled so far: I slowed down CAD modeling to set up for 3D printing. I did get Shapeways to print the domes; they turned out nice, but extrapolating the cost to do th

Bill, I'll be very interested in what your 6k printer can do.

Yes, HO1:87 on both counts. Here's the part design, 63 lines of OpenSCAD code. All the dimensions are actual inches, for an HO scale part. Still need to put in the piping interfaces and the nut-job on

> What’s everyone else working on? Just printed the first part of my D&RG #168 project, a rough version of the compressor. I was particularly worried about how a 4K resin printer would resolve the fin

Thanks, we'll see how printing goes... I bought a Elegoo Mars 3. The 4k led promises higher resolution, most comparisons conclude about 35% better than 2k. I aligned the build plate and set the Z axis

For a long time I've wanted to do brass scratchbuilding. Recently, I set out to do just that, and came to the conclusion that a $2-3000US investment in machine tools just wasn't practical. I guess I w

I haven't made as much progress on my T-12 #168, holiday and family commitments have taken precedence. However, one can sit at a computer in a lot of places and situations, so I did manage to model an

Craig, The drivers, axles crankpins, and hornblock bearings all came from scalelink.co.uk. Go to this page: https://www.scalelink.co.uk/acatalog/Sundry_Items__Lead_Foil__Chain_Etc_.html and search for