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I used it on my very first modular layout. It consists of two 3x5 and two 3x7 modules that bolt together to form a "T" shape. The Christmas tree goes at the base of the "T". While it is strong and durable (I routinely stand on it when decorating the Christmas tree), I would never and I mean never use OSB to build another train module. Mine are heavy, heavy, heavy!

 

You need to rate where weight falls into your priorities. FWIW, I don't bother with 2x4s either....

 

Gilly

I also framed my 2 4x8 tables with 2x4s and covered them with 7/16" OSB. I built them close to 20 years ago and they seem to be holding up fine. The half table I made is framed with 1x4s and topped with OSB also. I am reluctant to stand on that section because there are no legs for it; it is just wood screwed to the other tables.

 

J White

 

Originally Posted by c.sam:

What is the approximate cost difference against the equivalent plywood?

Any disadvantages (for a permanent set up?)

OSB is a good bit cheaper for the same thickness plywood.  I like it better as I never get the curl ply will sometimes. Plus I like the stability and easy cutting OSB has. OSB cost here is about 50-75% of ply. 

On thing I found out about quiet brace is its distributed regionally.  I read all the forums on here that discussed the product and ended up contacting the manufacturer looking for a distributor.  There were none anywhere close.  Home Depot would order a minimum amount for me, but I didn't need 80 sheets.  I used 3/4" plywood topped with one inch green foam.  The plywood was from a builders surplus store and cheaper then any of the cheapest plywood or OSB from any of the big box retailers.  The sheets of foam come in different colors (pink, blue, green) depending on the manufacturer and retailer.  Model Railroader had a project layout a couple months ago that just used the foam over a wooden frame.  If you don't need to climb on the layout this would make a light weight platform.

Originally Posted by RICKC:

I am not a supporter of OSB.  When you cut it doesn't it splinter around the cut edge?  Hard to change my ways but I was raised on plywood.  Can't get excited over wood chips and glue.  But, I guess it works.  It is used to build houses.

 

Rick

I find that today's OSB cuts as good or better than ply. The OSB today is different than what we had 20 years ago IMHO. The binding agent 'glue' is a nice epoxy like filler and I do not see splintering like OSB of old. And no more saw dust than ply....maybe less. OSB biggest advantage is cost......and that's a mojor for me. Money no object I'd use one inch oak cabinet ply with poplar framing.......but my budget does not allow. The cheap wood for my layout was $500.....about all I could spend on it. 

i have always used OSB Board for my Displays.  I have been doing christmas displays for the last 35 years.  these displays has been basic rectangles up to and including multi level monster pieces.  all of these have been framed with 2x4's and put together with drywall screws.  On all of these displays I have walked sat bounced and climbed all over the decking with not on single problem of cracking or breaking. 


Also understand that the decks can get rather heavy at times as has been posted in the horror stories thread and the have you ever got hurt working on the layout thread from some time ago. 

Even with the weight issue i have not once ever had any of the decking fail me

the last time I bought OSB which was last year i paid 8.00 per sheet for 7/16" compared to the equivelant of 1/2" ply for 19.85 per sheet

It is my impression that the bonding agent for the wood chips can cause an allergic reaction for some people as there are fumes given off.  But perhaps others have had first hand experience with that aspect of this product and can comment specifically.  I use plywood, but had considered OSB for its weight and lack of warping.  To me, weight is mass which can reduce vibration to make a more quiet running layout.  Even plywood over drywall would provide greater mass--it's almost like running your train on a concrete floor.

I too am in the OSB camp, it does come in grades but the highest is well below the cost of similar plywood. OSB is rated, see the bin label, for floor decking on 16" centers, if it can hold the floor of a kitchen with people, cabinets, and appliances, I would venture it can hold even the biggest Big Boy long with hollow mountains and ground foam covering.

 

Once overlaid with soundboard, foam, etc., and detailed just tell everyone it is built on 1" finger jointed old growth Mahogany.....who is ever going to know or really care.

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