Has anyone taken a stab at creating decent looking tunnel portals? The outside shape should be easy, but I'm not sure I can make realistic brick or stone looking surfaces.
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John,
Have you seen the ones Scenic Express makes?
https://www.sceneryexpress.com...stems/products/1076/
John
@Craftech posted:John,
Have you seen the ones Scenic Express makes?
https://www.sceneryexpress.com...stems/products/1076/
John
Sure, but the whole point was to print them since I have the printer. 
This is the 3D Printing forum, right? 
I know that one of the questions I have is would you make them taller? I know that the GG1 will not go through any normal tunnel portal as they are too short for the pantographs if extended. While I don't know if that is something that happened in the real world, I have seen people struggle with that issue when it comes to them running a GG1 through their tunnel.
@Dave NYC Hudson PRR K4 posted:I know that one of the questions I have is would you make them taller? I know that the GG1 will not go through any normal tunnel portal as they are too short for the pantographs if extended. While I don't know if that is something that happened in the real world, I have seen people struggle with that issue when it comes to them running a GG1 through their tunnel.
Not for my layout, my second level gives me around 5.25" from the railhead on the main level, that's too slim for the GG1 to have the pans up. That being the case, it's pointless to have the tunnel portals taller... The pans should be riding on catenary, so if I run those GG1's, I just leave the pans down.
I found some tunnel portals on some of the 3D model sites, I scaled up an HO set, cut them in half to be able to print them on the printer, and the first half is printing.
If the first one works out, I'll print two left halves and two right halves at a time, just can't print the complete portal at one clip because it's wider than the 220mm max for my printer.
I found some more ornate stone ones as well, I may print those next. 
I think too John, doesn't the catenary when running into tunnels come down lower to fit into the tunnel? I want to say that I have seen that posted somewhere, but I can't recall. Of course, that doesn't work for the VL one as they do their own thing. Oops. No GG1's for me doing that business. I guess it depends on the layout, eh?
@gunrunnerjohn posted:Sure, but the whole point was to print them since I have the printer.
This is the running column of posts on the right side of the page. Didn't dig any further.
But a 3D printed tunnel portal sounds like a great project. Hopefully someone creates one.
John
Well, I'm half-way there... I'm printing the right half now.
