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(Very) long story short, I commissioned someone to help me build a new layout, and they messed up and put the double mainline curves way too close together, necessitating some on-the-fly changes. One of the results of those changes is that the outer-most loop of track comes right up to the edge of the benchwork, and I'm trying to figure out what the best way is to be able to ballast the track in this situation. The only thing I can think of would be to put a raised lip around the outside to form an edge.

Since y'all always have amazing ideas, I figured I'd ask. If this was your layout, how would you handle it? PXL_20250214_021555773PXL_20250214_021528405

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@DoubleDAZ posted:

Jeremiah, can you add some cleats on the bottom that stick out far enough to add 1-3" curved pieces on top of them to extend the curve far enough to ballast and add the facia?

I'm going to try and see if I can either use cleats (which will work, but I'm afraid will be ugly) or use the same pocket screw method that's in place everywhere else to add an additional three inches onto the edge. I'd prefer the latter, may have to settle for the former.

I would do the cleat idea also, but I would add a edge to it since this is an outside curve and just asking for a track to floor derailment accident,  I added a raised edge on  the inside curve that is over the stair well on mine, never would have thought I would need one until a GP9 took a flyer down the steps.  On legendary John Armstrongs empire, there was a similar situation with a raised edge that vistors would like to stand at and rest their arms on.  He added a scale chain link fence with the vertical supports made from needles.  You only rested you arms there once, and only for a very short time.

Last edited by CALNNC

I agree with Dave that making a curved plywood sandwich with the lower piece wider than the top on the inside, to attach to the layout from underneath (and then adding a safety fascia if you're so inclined) is the best way to go.

However, if you're not concerned with potential flying trains and adding a fascia, the easiest way would be to just temporarily glue/tape some semi-stiff cardboard paper around the outside edge to keep ballast from falling off the layout as you apply it and then ballast and glue and remove the cardboard. I think there's enough room on the outside to make it look presentable.

If you do go this route, put some wax paper on the inside of the curve first to keep the glue from sticking to the cardboard. 

@J.Dooley posted:

(Very) long story short, I commissioned someone to help me build a new layout, and they messed up and put the double mainline curves way too close together, necessitating some on-the-fly changes. One of the results of those changes is that the outer-most loop of track comes right up to the edge of the benchwork, and I'm trying to figure out what the best way is to be able to ballast the track in this situation. The only thing I can think of would be to put a raised lip around the outside to form an edge.

Since y'all always have amazing ideas, I figured I'd ask. If this was your layout, how would you handle it? PXL_20250214_021555773PXL_20250214_021528405

A look at the structure underneath would help. If you have beams then just add extensions and extend the top.

Or you can screw extensions through the existing top and then add new tops. A cantilever needs about a 2:1 ratio.

I think the layout will look better with some added bench and you wouldn't want a shirt or an arm, etc to catch the pilot overhanging the edge.

Adding a fascia will give a nice finished appearance to the layout too. Keep the top about a 1/2"-1" higher as a ballast stop.

Bob

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