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Rigid foam under cork roadbed for flat layout?

Dave Adams All Messages By This Member #27493 I am planning to start building a 2' x 8" shelf layout soon and previously bought some 1" green rigid foam at the hardware store for going over the plywood.? I can't exactly recall the benefits of using the foam under the cork roadbed.? I do remember that it is useful for carving out depressions for scenery but other than that wanted to ask about it's use and if it is worthwhile for building a flat layout.? If it is worthwhile, what is a good method to bond it to the plywood?? I have to use low voc product and have low voc caulk and wood glue on hand.? Thank you. ------------ Please sign your posts so we know who you are. Thanks Bruce Wilson Owner/Moderating Team
Thomas Knapp All Messages By This Member #27494 开云体育 Dave, If you are hand-laying track on the usual mix of wood and PCB ties, DO NOT USE CORK ROADBED. It is too flexible and too subject to humidity and temperature changes. For foam-to-plywood, I use Liquid Nails for Projects. This is designed for use with MOST rigid foam, although I have found it attacks some (not all) bead-board foam such as that used in packaging. I have not found it to attack rigid foam used in construction. Tom Knapp NMRA MMR#101 Koloa, Kauai HI ? ? toggle quoted message Show quoted text From: [email protected] <[email protected]> On Behalf Of Dave Adams Sent: Wednesday, January 13, 2021 8:32 AM To: [email protected] Subject: [small-layout-design] Rigid foam under cork roadbed for flat layout? ? I am planning to start building a 2' x 8" shelf layout soon and previously bought some 1" green rigid foam at the hardware store for going over the plywood.? I can't exactly recall the benefits of using the foam under the cork roadbed.? I do remember that it is useful for carving out depressions for scenery but other than that wanted to ask about it's use and if it is worthwhile for building a flat layout.? If it is worthwhile, what is a good method to bond it to the plywood?? I have to use low voc product and have low voc caulk and wood glue on hand.? Thank you. ------------ Please sign your posts so we know who you are. Thanks Bruce Wilson Owner/Moderating Team
Larry Blanchard All Messages By This Member #27495 开云体育 On 1/13/21 12:18 PM, Thomas Knapp wrote: If you are hand-laying track on the usual mix of wood and PCB ties, DO NOT USE CORK ROADBED. It is too flexible and too subject to humidity and temperature changes. Yea, verily.? I've been using basswood. It's a pain on curves, but I haven't found anything better.? I use 1/8" or 3/16" but pick whatever best represents your era and railroad.? Shellac it first so any moisture won't warp it. One of these days someone will figure out how to combine foam and spline roadbed :-).
Nolan Hinshaw All Messages By This Member #27496 On Jan 16, 2021, at 11:12, Larry Blanchard via groups.io <labl02@...> wrote: One of these days someone will figure out how to combine foam and spline roadbed :-). I am quite fond of Homasote? spline roadbed, and I am unanimous in this. -- Artie the Hinged Jaw

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