I designed this train tunnel entrance for my friends O-Gauge train. Just some cardboard and hot glue and we had a quick mockup to try out.
Here’s a pile of parts for your tunnel entrance kit. Instructions not included. 
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That’s great. I really need to pull out my set again
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Christmas time is a great time to do it!
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Fantastic!! I love cardboard projects!
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Looks really great!
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That looks great - you’re definitely on the right track! 
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That looks great! Now you just need to add some score/engrave marks on it for stone/brick work, get it painted and wah-lah - perfect bridge! Makes me want a train set!
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So cool
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What a fun project! It really looks beautiful. It’s amazing what you can do with cardboard and hot glue. And a Glowforge, of course!
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Super fun! Cool design! Love an electric train!
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That looks so cool!
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Looks
Great!
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Way to spice up the thread without derailing it.
Well done
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anybody that needs train supplies. my friend owns Roundhouse Trains in Louisville, KY.
he has an absurd amount of inventory. 
everything imaginable.
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Wow! How fun!
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Wow, the cardboard version came out so well that you hardly need to do it in wood. But it would stand up better over time. Your arch design is gorgeous!
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Fabulous work! I need to do something similar for my Z scale
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Yes, for sure, give it a go! 
Please share a photo if you do.
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If it looks that good in cardboard it going to look incredible when the final version is complete.
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Wow, looks great. Can’t wait to see the final version.
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