Measure once...

That's pretty funny.  I think most of us have been there.

Just be sure to check things on those curves.

MELGAR

My guess all the engines from your shelves were not tested until now...

Well, I recently discovered as I was designing and putting together a tunnel, my MTH Allegheny was in reverse.  I kept waiting for the engine to clear the tunnel opening.  I soon discover that the cab housing roof was blocked by a pier. 

So, we may need to test our clear travel with our engines in reverse as well!'

Keep up the great work!

I think that the clearance phenomena is a rite of passage.

Having a number of large articulated locomotives, I've had the pleasure of seeing several of them stop suddenly when they meet an immovable object.   We actually had a little club party making the tunnel portals wide enough for the Vision Line Big Boy.  After that all work, come to find out that the MTH Premier Big Boy swings just a bit wider, and it didn't make it through one of the "improved" spots.

Been there done that... Will probably do it again.

When making these platforms I measured using my largest steam loco, diesel and coach car.  Perfect.  My brother in law brought over his MTH Premier A5 and the steam chest hit the platform. I tore it all out and did it again.

Thinking I was all done I started parking trains.  I measured all the tracks and clearances with what I thought was my largest coach... an MTH Premier Vista Dome.

My son wanted to park his three Atlas Comet Cars on a particular station track because those three cars fit perfectly on the shortest length of track.  Except... those cars are VERY long and clipped the side of a corner support.

My fix... Cut out the corner support and put in a plastruct I beam.  They barely clear the beam.

At least I have a whimsical story to share with visitors who question why this is the way it is.

Have Fun!

Ron

Measure twice, cut once.

I have done that many times in my life, and things still end up too short. 

My carpentry skills are right up there with my skills in brain surgery.