SP Tunnel Portals

[ednadolski]

I guess if you wait long enough, someone will find a way to make something that you've always wanted....

https://www.zyxcreative.com/tunnels/

Ed

[GaryHinshaw]

Wow.  Tunnels, liners, block walls, flange greasers.  I'm set.  Thanks for the heads up!!

Now if only I could convince @TrainCat2 to get back in the game long enough to produce the MP 377 signal bridge he had long promised....

[ednadolski]

I wonder what it would take to weather the 3D resin material to represent things like the notching, spalling, and cracking like the prototype: https://photos-hewgill-com.s3.amazonaws.com/photo/trips/tehachapi-loop/IMG_5426.JPG

With hydrocal castings I could chip away small amounts with a pick, but that doesn't seem like it would work out with  the 3D resin.

WRT the greasers -- now all we need are the solar panels

Ed

[rodsup9000]

 One of the first things I printed after I got my resin printer was WP style portals. To simulate cracks, all you need to do to the print is take a very sharp knife and scratch it, and then weather like anything else. I don't know how I could do the chunk missing other than do it in the CAD drawing. I might try to see what I can do with one of my prints by trying to break a little piece out.



 This isn't the best photo, but here's mine. I also have it with either wing wall or with out.
















And here's the prototype

[ednadolski]

To simulate cracks, all you need to do to the print is take a very sharp knife and scratch it, and then weather like anything else. I don't know how I could do the chunk missing other than do it in the CAD drawing. I might try to see what I can do with one of my prints by trying to break a little piece out.

Here is a thought:  Use the 3D printed parts as a 'master' to make a rubber mold and then cast a duplicate in Hydrocal.   It would then be fairly straightforward to chip at the plaster with a sharp pick in order to distress them as desired.  That BTW could include the 'notching' that was done on the prototype to create clearance for double-stacks.

While that is definitely some extra work, it would be less work than trying to scratchbuild your own masters.

Ed

[GaryHinshaw]

^ This is exactly what I'm thinking of trying.  But I don't think I'd go to that trouble for the liners.  For those, I really like the idea of custom curved liners, especially for my short, curved Tunnel 2, which is very prominent and easily visible from both sides.

BTW, nice prints Rod.