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post #1 of 18 (permalink) Old 09-27-2015, 12:44 PM Thread Starter
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Default Sign Foam???

I am looking at a product called Sign Foam. It is apparently a very dense foam that mimics wood, without the grain and knot issues.

What I have SEEN shows me is is a fine alternative to wood for sign making and other projects.

Has anyone used it, and if so, what are your comments?
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post #2 of 18 (permalink) Old 09-27-2015, 12:55 PM
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Sign Foam is not very good. It really breaks down in uv light. I've been using Corafoam by Duna. It carves easy, and resists the uv breakdown, but still has to be repainted every few years just like wood. But it's not cheap. When you take into consideration there's no gluing or waste (comes in 4 x 8 or 5 x 10 sheets), you just cut off the size piece you need, it's really not that bad.

We've got some threads on it here if you want to look them up.

HJ
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post #3 of 18 (permalink) Old 09-27-2015, 10:54 PM Thread Starter
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I am looking for all kinds of materials to experiment with, as I try new things with my router and CNC table.

I can get the usual stuff from the big box stores, like plywood, particle board, MDF, and such. I also get PVC boards or planks and use them in my projects with moderate success.

I will look at Corafoam and other foams as I go down to Nashville. There is a foam manufacturer down there who will show me what is what, I guess.
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post #4 of 18 (permalink) Old 10-01-2015, 09:08 AM
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Hi, I havn't use sign form, But have read it's review. It is not so good. There are also good sign form available but these are very expensive.
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post #5 of 18 (permalink) Old 10-01-2015, 10:53 AM Thread Starter
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I am not sure we are talking about the same product.

The SignFoam4 I am looking at comes in a variety of densities, up to 70 lb./cu.ft. That is DENSE foam! I am looking at the 20 and 30 lb./cu. ft. foams. I am not talking about styrofoam here.

The suppliers told me that they MUST be properly primed (two to three coats) and then painted, with NO part of the surface exposed, to prevent UV breakdown. There are resins and other coatings that can be applied to SignFoam4 that give it a ceramic appearance, and make the sign last.

Well, I stopped in at three suppliers and they inundated me with sample boxes and ringed chips of various materials and assorted color samples, etc. It looks like my material options are limited to the PVC boards like Sintra Board and the foams like SignFoam4, as well as the usual plexiglass and polycarbonate offerings.

I just thought there might be something else to work with, but the industry has been remarkably uninventive in coming up with a variety of new materials. There are lots of WOODS to work with, but the synthetic, man-made materials in anything thicker than poster board are sorely lacking.

I was hoping to find a source for rigid, clear or colored plastic sheets, rods or blocks that could be machined, cut, bent, formed and so forth. Think of Jello, but without the wiggles! Apparently, no one has had the vision to manufacture bulk synthetic materials that drift too far away from the traditional stuff.

You know how people make beautiful ice sculptures out of a large block of ice? Well, I was picturing large blocks of PLASTICS, clear, translucent or opaque, in 300 different colors, and dozens of different consistencies from rubbery (think of those pink erasers we had as kids) to rock solid but workable with cutting, sanding and shaping tools. We have blocks of ICE and blocks of MARBLE and GRANITE, and blocks of aluminum and glass and all sorts of other things, but not blocks of PLASTIC!

I guess I am expecting too much from humanity.



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post #6 of 18 (permalink) Old 10-01-2015, 10:54 AM Thread Starter
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Originally Posted by Jimadams View Post
Hi, I havn't use sign form, But have read it's review. It is not so good. There are also good sign form available but these are very expensive.
Can you point me to something? I don't care about the cost. I want OPTIONS!


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post #7 of 18 (permalink) Old 10-03-2015, 08:16 PM
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Just talked to a guy wanting 50+ address signs ---- he wanted Corafoam.

Aluminum was his second choice, but Corafoam was his first.

HJ
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post #8 of 18 (permalink) Old 10-03-2015, 08:50 PM Thread Starter
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I am not seeing a big difference between SignFoam and CoraFoam. At equal densities, they seem to be the same basic product. I will search for a source for CoraFoam and order a sample pack to get some hands-on knowledge.
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post #9 of 18 (permalink) Old 10-04-2015, 07:04 AM
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Look into Starboard as a possibility for your need. I think you will like it.

King StarBoard -STARBOARD HDPE Sheet - Order Online .

It isn't cheap, but it's nearly indestructible and holds up well outdoors. I design and build exhibits for science museums. We have gotten away from using Baltic Birch plywood covered with high pressure laminate (Formica) and now use Starboard for most of the exhibit cabinets because it holds up much better to abuse by children, graffiti artists, moving crews, Sunlight, etc. It cuts much like the birch plywood, holds screws well, and can be glued together (with special glue). The color is the same all the way through it, so scuffs and lightly carved grafitti can be sanded out easily and the surface re-buffed to original appearance and color. It is also available in many thicknesses and sheet sizes, much like plywood.

Charley

Central North Carolina
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post #10 of 18 (permalink) Old 10-04-2015, 01:01 PM Thread Starter
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Originally Posted by CharleyL View Post
Look into Starboard as a possibility for your need. I think you will like it.

King StarBoard -STARBOARD HDPE Sheet - Order Online .

It isn't cheap, but it's nearly indestructible and holds up well outdoors.

Charley
Yep. Piedmont Plastics in Nashville sells King StarBoard. In a few days, I'm going to purchase a bunch of material. I just sold a rental home, so I have cash!
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