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Cutting Woodland Scenics Roadbed with hot wire

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  • Member since
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Posted by richhotrain on Saturday, April 16, 2022 5:29 AM

For years, I used Woodland Scenics Foam Track Bed on my layouts. But, I went with cork on my latest layout, and I like it much better. It is firmer than the Foam Track Bend which is too spongy by comparison. In hindsight, I believe that Woodland Scenics Foam Track Bed is a poor choice for roadbed.

Rich

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Posted by wrench567 on Friday, April 15, 2022 8:27 PM

The problem I have is while the ballast dried you can clearly see where I had weight on the rails and the foam compressed. There is undulations in the track. They haven't caused any problems but looking around the curve you can see them.

   Pete.

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Posted by rrebell on Friday, April 15, 2022 6:49 PM

The real problem with WS roadbed is you can't sand it to fix transitions.

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Posted by wrench567 on Friday, April 15, 2022 6:19 PM

  I used it on my corner module. All I used was a pair of scissors. But I'm just a simple kind of guy and trying not to make things difficult. I suppose you can hot wire it or razor saw maybe even a high tech laser. Make it as difficult as you like.

  I still have some of the stuff and won't be using it except for packing or fill for a coal load.

     Pete.

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Posted by Overmod on Friday, April 15, 2022 6:02 PM

Has anyone tried using a matte cutter, either with a straight or 'circular' blade?

With a little care you might make the blade angle adjustable to realistic ballast prism or subgrade angles...

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Posted by richhotrain on Friday, April 15, 2022 10:02 AM

I am a bit baffled at the continuing interest in using a hot wire to cut the WS Foam Track-Bed. I cannot see it working effectively since the hot wire will melt the foam. A boxcutter works perfectly well to make clean, exacting cuts.

Rich

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Posted by wjstix on Friday, April 15, 2022 9:25 AM

hgodling
I want to cut it to narrow gauge and the hot wire is a lot easier to maintain the bevel on a long stip.

From Woodland Scenics "FAQ" page:

Can I use a Hot Wire Foam Cutter to cut my Track-Bed?

No, do not cut the Track-Bed with a Hot Wire Foam Cutter. This may emit toxic fumes.

_______________________

WS Track-Bed is available in O, HO, and N. If you're doing HO narrow gauge, maybe the N-scale Track-Bed would work?

https://woodlandscenics.woodlandscenics.com/show/item/ST1475

https://woodlandscenics.woodlandscenics.com/show/item/ST1462

 

As far as gluing it, WS Foam Tack Glue is designed to attach Track-Bed to their subterrainian foam risers, so might be the best bet.

Stix
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Posted by SeeYou190 on Thursday, April 14, 2022 9:52 PM

hgodling
The point is to try things out and learn what works for me. So I figured it was worth giving it a try. 

Great update. I am a strong believer in trying things out and experimenting to see what works.

I really like the way you built the temporary cutter to try this out.

-Kevin

Living the dream.

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Posted by hgodling on Thursday, April 14, 2022 9:46 PM

I finally got around to trying the hot wire on the woodland scenics road bed. For now, I don't need a lot of road bed. I am building a smallish section that will eventually get integrated into something bigger. The point is to try things out and learn what works for me. So I figured it was worth giving it a try. 

I mad a crude cutter to try it out. (My normal cutter is is very large and unwieldy)

I found it did take a higher temperature but it did do a pretty good job cutting the roadbed. I definitely need to make some sort of jig to cut it better, but at least now I am fairly confident that it will work. I wasn't try to hard to make it straight, just to see how well it would cut. 

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Posted by richhotrain on Sunday, December 12, 2021 2:44 PM

hgodling

I want to use the foam cutter so I can setup some sort of jig to get a more consistent cut then I can get with a pair of scissors. I see myself being more likely to cut myself if I use a razor blade in the jig.  

Lengthwise, how much WS Foam do you need for your trackwork?

Rich

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Posted by Track fiddler on Sunday, December 12, 2021 2:38 PM

Taking a little break from carving foam with a wallpaper knife most of the day.  I might be done, ...Kinda sick of it.  It's taking too long anyway and I may have to impose Plan B Laugh

hgodling

I see myself being more likely to cut myself if I use a razor blade in the jig. 

I sense you've had a few whoops's and a bit shy of a sharp blade.  I bet everyone here has had a couple of accidents with a razor knife.  I've had a couple of Doozies!  Makes you gain more respect for that blade. 
 
Some of the more frequent accidents I've had with a utility knife was installing suspended ceilings where you use your knife all day long. 
 
Those cellulose ceiling tiles can be a little unforgiving at times because of the fibers and some harder particles they manufacture them with.  They tend to catch the blade and all of a sudden it Flicks. 
 
Everyone knows the rule is to hold what you're cutting behind the direction the blade is traveling.  Even knowing this, a guy gets going on a roll with his work and subconsciously breaks the rule, especially cutting oddball shapes.
I called them my Casey Jones gloves.  I learned to start wearing these on ceiling tile jobs and they kept the ceiling tiles cleaner anyway from my grubby hands.
 
Yep,  I still had some slips but they did their job protecting my fingersYes
The blade went through once but the thickness of the glove took the blunt of it and it was very minor.
 
 
 
 
 
TF
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Posted by jjdamnit on Sunday, December 12, 2021 1:13 PM

Hello All,

As a user and firm believer in the Woodland Scenics foam roadbed I concur with splitting the sections lengthwise and removing the required width to match your track.

I have not used a hot wire to cut the foam but I suspect a sharp blade in your cutting tool of choice, and a good straight edge would suffice.

Since you will need to split the roadbed down the centerline for the curves, doing this for the straight sections shouldn't pose a big imposition.

As has been posted, the hot wire cutter might produce a sealed or hard edge to the foam. The only way is to do a test- -outdoors to mitigate the effects of any fumes.

Hope this helps.

"Uhh...I didn’t know it was 'impossible' I just made it work...sorry"

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Posted by doctorwayne on Sunday, December 12, 2021 1:01 PM

I helped a longtime friend build his layout, but he had bought the Woodland Scenics foam roadbed, rather than cork, and I found it a lot more difficult with which to work, especially when it was time to install the track and turnouts. 
The fact that the layout was on sheets of extruded foam compounded the difficulties, and it's probably a good thing that he uses that layout mostly for photography purposes, rather than for running trains.

My preference is for glued-down cork on a solid wood surface and nailed-down track.

Wayne

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Posted by Overmod on Sunday, December 12, 2021 12:52 PM

I wonder if the approach requires two cuts, maintaining the separation down track centerline.  He might only trim one side, as a straight uncomplicated cut that could tolerate a little wibble and could be easily shaved, with the seam offset proportionally.

A little more fun to maintain location of track centerline, but perhaps worth it.

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Posted by hgodling on Sunday, December 12, 2021 12:37 PM

Track fiddler

I hope you didn't find my spur of the moment humor offensive hgodling.  

I wasn't offended at all. I was quite amused. 

richhotrain

Don't overlook my earlier suggestion to separate the foam into two equal halves and trim what was the center to fit your narrow gauge roadbed need. That way, there is no need to use a hot wire for the sloped edges since they remain in place.

I didn't intend to overlook it. It is a very good suggestion. However I would still like to do something to make it more uniform then me cutting it by hand. I am probably overthinking it and should just use a knife and ruler. 

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Posted by Track fiddler on Sunday, December 12, 2021 11:26 AM

I hope you didn't find my spur of the moment humor offensive hgodling.  I just couldn't resist as I found Rich's comment only "one way to find out" quite amusing.  That's all it was is indirect spur-of-the-moment humor.

I don't think you'll find your objective to your project very difficult at all in whatever way you choose to cut it.  

 

Have funWink

 

 

TF

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Posted by richhotrain on Sunday, December 12, 2021 11:09 AM

hgodling

I want to use the foam cutter so I can setup some sort of jig to get a more consistent cut then I can get with a pair of scissors. I see myself being more likely to cut myself if I use a razor blade in the jig.  

Don't overlook my earlier suggestion to separate the foam into two equal halves and trim what was the center to fit your narrow gauge roadbed need. That way, there is no need to use a hot wire for the sloped edges since they remain in place.

Rich

Alton Junction

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Posted by hgodling on Sunday, December 12, 2021 10:53 AM

Track fiddler

I would think a hot wire would melt the edges into hard plasticy goo goo clusters from past experience seeing what high heat does to spongy foam.  I also think you could get away with cutting just one of the halves with a good quality Razor Edge scissors like Fiskars makes, after you get it separated.

This is part of the reason I asked the question. A number of years ago, I used a hot wire to cut some EPP for model plane wings. It does make a weird mess. The foam melted into these hard strings. However they were fairly easy to clean and the foam and I ended up with a nice cut in the end. 

I knew there was a good chance of problems, and I was kind of hoping someone else has tried this. I don't actually have the foam Roadbed yet.

I want to use the foam cutter so I can setup some sort of jig to get a more consistent cut then I can get with a pair of scissors. I see myself being more likely to cut myself if I use a razor blade in the jig. 

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Posted by Track fiddler on Sunday, December 12, 2021 9:40 AM

richhotrain

 

 
Track fiddler

I would think a hot wire would melt the edges into hard plasticy goo goo clusters from past experience seeing what high heat does to spongy foam.  

 

 

Yep, that would be my concern as well.

 

One way to find out. Dead

LaughLaughLaughYep!

Hold my beer and watch this! Laugh

 

 

TF

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Posted by richhotrain on Sunday, December 12, 2021 9:30 AM

Track fiddler

I would think a hot wire would melt the edges into hard plasticy goo goo clusters from past experience seeing what high heat does to spongy foam.  

Yep, that would be my concern as well.

One way to find out. Dead

Rich

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Posted by Track fiddler on Sunday, December 12, 2021 9:14 AM

I'm not real familiar with the Woodland scenic's foam roadbed as I used cork.  I didn't know it came perforated down the center like cork, only at 90° as Rich pointed out.

I do remember squeezing the stuff at a hobby store once.  The stuff is more a softer spongy foam like the cushions in your couch than the firmness of extruded foam. 

I would think a hot wire would melt the edges into hard plasticy goo goo clusters from past experience seeing what high heat does to spongy foam.  I also think you could get away with cutting just one of the halves with a good quality Razor Edge scissors like Fiskars makes, after you get it separated.

 

 

 

TF

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Posted by richhotrain on Sunday, December 12, 2021 7:44 AM

On my current layout, I use cork as the roadbed. But, on all of my previous layouts, I used Woodland Scenics Foam Track-Bed. I would be concerned that the foam would not react well to a hot wire. For sure, you would want to use a test strip to find out.

Since you want to use trim the foam roadbed to accommodate narrow gauge, here is what I would do. The foam strips can easily be divided into two halves. You don't even need a knife or pair of scissors. So, you can use your fingers to to separate the foam into two equal pieces, then trim the straight edge of each piece. When you rejoin the two trimmed pieces to fit narrow gauge, the sloped sides will remain.

Rich

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Posted by Track fiddler on Sunday, December 12, 2021 4:42 AM

Good morning

I would think a hotwire would have the tendency to dog wag unless you came up with some kind of jig with a fence for the hot wire to follow. 

That could be done nailing some boards together in the shape of a thin (U)  The foam roadbed could be slipped into the correctly spaced slot set to the width that you need to cut.  That jig would act as a fence for your hotwire to follow.

I don't know if that would be the best method to cut it though.....Maybe

 

It would tend to do it this way.

1) Take a 4' drywall square and draw a straight line on a piece of extruded foam.

2) T-pin the foam roadbed down against the straight line.  (or better yet, against some kind of thin straight edge you glue down on the line that acts as a stop)

3) Tape or clamp the drywall square down beyond the ends of the roadbed the width you wish to cut so the square can't move.  (or better yet, a jig could be made to hold the square in place as well)

4) Slide a carpet knife down the drywall square at an angle for the bevel, pressing the square down firmly behind the blade as you go.

 

Foam only likes sharp blades and that carpet knife will cut it like warm butter.  But a word of caution to have a lot of respect for that carpet knife.

Carpet knifes can be evil.  One of them only had to tell me that once.

 

Have fun with your project

 

 

 

TF

 

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Cutting Woodland Scenics Roadbed with hot wire
Posted by hgodling on Saturday, December 11, 2021 5:55 PM

Has anyone tried cutting the woodland scenics foam Roadbed with a hot wire cutter?

Most people seem to use a knife, but it would be helpful if I could use a hotwire. I have not bought any of it yet, so I'm note sure what kind of foam it is. 

I want to cut it to narrow gauge and the hot wire is a lot easier to maintain the bevel on a long stip. 

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