Egg Tray Sandwich

Discussion of model railway baseboard design and construction
kebang
Posts: 447
Joined: Fri Jun 13, 2008 11:59 am
Location: Bohol, Philippines

Egg Tray Sandwich

Postby kebang » Sat Dec 15, 2018 4:46 am

Going to build a very small (100cm x 120cm) portable layout. Trying to design the baseboard to be as light and stiff as possible. Has anyone tried to sandwich egg trays between 2 sheets 5mm ply? the egg box dimensions are 292 x 292 x 45mm, so the completed board would be around 2inches thick
sala 120x100.png
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dan8400
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Re: Egg Tray Sandwich

Postby dan8400 » Sat Dec 15, 2018 7:44 am

I haven't tried egg boxes myself, but I have used 40mm insulation (celotex, kingspan etc) with ply both sides. Very light and strong

Thanks
Dan
My Layout Thread: viewtopic.php?f=22&t=30117

kebang
Posts: 447
Joined: Fri Jun 13, 2008 11:59 am
Location: Bohol, Philippines

Re: Egg Tray Sandwich

Postby kebang » Sat Dec 15, 2018 9:00 am

Unfortunately they do not sell celotex, kingspan etc here in the Philippines, but I can get egg trays!
I keep looking in the hardware stores but I can't find anything light and stiff that might do the job.

dan8400
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Location: Midville, Lincolnshire
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Re: Egg Tray Sandwich

Postby dan8400 » Sat Dec 15, 2018 10:24 am

If they are all the same size then I don't see why it wouldn't work.

Give it a try

Thanks
Dan
My Layout Thread: viewtopic.php?f=22&t=30117

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Bufferstop
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Re: Egg Tray Sandwich

Postby Bufferstop » Sat Dec 15, 2018 7:02 pm

I'd give it a try, if t he spacing is uniform, two layers with the trays in the second layer offset by half their width in two directions then trimmed around the edges, would take more trays but be stronger. Glueing on the ply would be stronger if you can put the whole thing between boards and weight it down until the flue gas set. What you are building is remarkably similar to a flush faced door, which uses a honeycombs of stiff card between the two surfaces.
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