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In COD we trust - Grumman C-2A Greyhound - scratchbuilt


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Nice to get a "behind the scene view" regarding Your "scratch-build technologies". Following with great interest since I might give this a try in the future as well... Could You tell us a little bit more regarding the high density PU foam ?

 

1) What is it used for in real life ?

2) Is there a specific brand to look out for ?

3) Where is it available ?

4) Price-indication ?

5) How do You cut it ? Am I looking at a small PROXXON band-saw in the pic's or is it an "electrical foam-cutter" ?

6) How does it hold up when being sanded ? (as asked by "Out2gtcha".)

 

Please do show us more regarding the "behind the scene's-work"...!!!

 

Regards Rudy. 

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Nice to get a "behind the scene view" regarding Your "scratch-build technologies". Following with great interest since I might give this a try in the future as well... Could You tell us a little bit more regarding the high density PU foam ?

 

1) What is it used for in real life ?

2) Is there a specific brand to look out for ?

3) Where is it available ?

4) Price-indication ?

5) How do You cut it ? Am I looking at a small PROXXON band-saw in the pic's or is it an "electrical foam-cutter" ?

6) How does it hold up when being sanded ? (as asked by "Out2gtcha".)

 

Please do show us more regarding the "behind the scene's-work"...!!!

 

Regards Rudy. 

 

Cutting PU foam with a wire cutter is discouraged, because (as I understand it) toxic fumes are released from the hot foam.

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The foam I use is available from different manufacturers under different names - Ureol, Renshape, Sculpture Block (in art supply stores) etc. I mostly use medium density foam cut with a Proxxon jigsaw; the one I have is not quite strong enough to cut high density foam. The foam sands perfectly and is easily cut; it's not spongy at all but highly resistant to compression. The company I work for uses the high density version to machine support structures for very big sliding window systems. 

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http://www.easycomposites.co.uk/#!/patterns-moulds-and-tooling/tooling-and-modelling-board

 

http://www.resins-online.com/ecommerce/product/sikablock-m650-polyurethane-model-board-500mm-x-497mm-x-100mm.aspx 

 

http://www.alchemie.com/category/products/modelboard/

 

If anyone wants a small offcut to try, drop me a line. We get through yards of the stuff sometimes, depending on the projects in hand!

 

I work for these guys in the prototyping department. I must have been VERY good in a previous life!

 

http://www.kinneirdufort.com

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