Horwood Brothers Gas, Oil and Service - Rail Scale Miniatures.

[ACL1504]

Well done!!! I wonder if there's any modeling problem you can't get yourself out of

terry

Butty Terry,

Thank you also. As far as coming across an issue I can't fix, I'm sure there are some out there. I just haven't let stuff like this discourage me from the end result. 

Tom
  

[ACL1504]

Nice save Tom.  Great to have you back.  Mark

Thank you Mark, and its great to be back if only once in a while for now.

Tom

[ACL1504]

Nice workability Tom. Glad to see you here again.

Rich

Rich,

Great to see you as well my friend. It seems like my work these days comes in bunches like bananas.

Tom

[ACL1504]

Tom your usual I can fix this problem!
Wonderful work.

Remember those timeouts don't overdo it!!

Jerry

Jerry,

Thank you my friend for the comment and compliment. Pam keeps me pretty well grounded as far as the time outs are concerned.

Tom

[ACL1504]

Great to see you back at it Tom.

A couple of things that come to mind.  It appears to be a much bigger piece of cardboard than the other examples you show where you have had no problems.  I notice there is track directly underneath this area.  Could it be heat from lighting attached to the underside of the baseboard?  I would imagine this might cause warpage.  Perhaps a combination of moisture from the gluing process and heat from the lighting before the glue had properly cured.

Cheers, Mark.

Mark, Cheers,

Your observation is correct in what information I posted. I did post photos of smaller areas. However, I have two other areas that are just as large or just a bit larger. I experienced no problems with them.

The lighting directly under this area is LED lighting and isn't attached directly to the under side of the plywood. It is attached to the underside of of the 1X4 bracing. The 1X4 is actually 3 3/4 ". The LEDs give off no heat whatsoever.

I'm confident my problem was self made as I was in to much of a hurry to get the base of the station in place. Very unusual for me to that impatient.

Tom

[ACL1504]

Okay, let's get this thing fixed so the gas station has a piece of real estate to build on.

We all know how and what happened. I'm assuming I was a bit to impatient in wanting to get the base down.

This time it will be done properly and less timely.

After removing the warped section, I trimmed the pink foam off the cardboard edges. I then used the old piece to trace the pattern on a new piece of pink foam.



I then made a test fit of the new foam on the layout.

[ACL1504]

The pink foam was removed and I went to my railroad book library for some weight.

You can see from the next photo, I took the books out on Sunday Sept. 06, 2016.



I painted fresh white glue to the plywood.

[ACL1504]

I positioned the fresh pink foam over the glue. I used the books as weights to cover the foam while the glue dried.





Tomorrow will be two weeks since the pink foam was glued in place. 

I think I'm safe now to remove the book and place them back on the librar

I think it is safe now to remove the books.



Done for today.

[S&S RR]

Tom

Great to see you back in the train room!!!

Here is my 2 cents on the curling / separation issue that you had.  When you had the train room closed up the materials saw temperatures / humidity changes that it didn't normally see when you were in the room all the time.

Every one of the materials you are using expands and contracts with temperature and humidity. When you glue a material like foam to a material like plywood the material that is not expanding as much tries to keep the material that is expanding more from expanding.  This makes the material sandwich curl. To make this more complicated the glue joint is expanding or contracting differently than the plywood and the foam.  I use the same construction but I brake the plywood into smaller pieces 18 inches by 36 inches is a big piece.  I glue the foam onto the plywood but I use smaller pieces of foam which gives me expansions joints. If you ever have one of the expansion joints show through to the topside scenery, use the Howard Zane cover it with a bush or scenery technique.

Okay that's all I got for 2 cents.  Give me a call if you want to dive into this deeper.

John

[S&S RR]

Tom

Great to see you back in the train room!!!

Here is my 2 cents on the curling / separation issue that you had.  When you had the train room closed up the materials saw temperatures / humidity changes that it didn't normally see when you were in the room all the time.

Every one of the materials you are using expands and contracts with temperature and humidity. When you glue a material like foam to a material like plywood the material that is not expanding as much tries to keep the material that is expanding more from expanding.  This makes the material sandwich curl. To make this more complicated the glue joint is expanding or contracting differently than the plywood and the foam.  I use the same construction but I brake the plywood into smaller pieces 18 inches by 36 inches is a big piece.  I glue the foam onto the plywood but I use smaller pieces of foam which gives me expansions joints. If you ever have one of the expansion joints show through to the topside scenery, use the Howard Zane cover it with a bush or scenery technique.

Okay that's all I got for 2 cents.  Give me a call if you want to dive into this deeper.

John

Another quick point.  I would take a razor blade that is long enough to go through the foam and cut expansion joints in the foam before adding the next layer. 

[S&S RR]

Tom

Great to see you back in the train room!!!

Here is my 2 cents on the curling / separation issue that you had.  When you had the train room closed up the materials saw temperatures / humidity changes that it didn't normally see when you were in the room all the time.

Every one of the materials you are using expands and contracts with temperature and humidity. When you glue a material like foam to a material like plywood the material that is not expanding as much tries to keep the material that is expanding more from expanding.  This makes the material sandwich curl. To make this more complicated the glue joint is expanding or contracting differently than the plywood and the foam. 

I use the same construction but I brake the plywood into smaller pieces 18 inches by 36 inches is a big piece.  I glue the foam onto the plywood but I use smaller pieces of foam which gives me expansions joints. If you ever have one of the expansion joints show through to the topside scenery, use the Howard Zane cover it with a bush or scenery technique.

Okay that's all I got for 2 cents.  Give me a call if you want to dive into this deeper.

John

Another quick point.  I would take a razor blade that is long enough to go through the foam and cut expansion joints in the foam before adding the next layer.

[PRR Modeler]

Good luck Tom.