Blue/pink/white foam. What do i ask for at the builders merchant

[Andy Freeman]

Bear with me here.

 

I have made a hot wire bow and have a 200W power supply for it.I harbour aspirations of making my own combat wing and a "fish" type areobat for the slopes.  This after noon i tried it out on some foam i had in the garage. Firstly white EPS foam that seems to have a low density, the wire goes through this like a politician through an expenses enquiry. Using some of the "brown foam i had which seems a lot denser, i could not cut very well at all. Either too fast giving a starving horse effect or too slow and melting great swathes of foam where foam there ought to be still.

 

So, to the question. Does the pink/blue/white stuff from the builders yard cut with the wire to an decent standard like the white stuff i had? I believe that the blue stuff also sands well? 

 

If i go into the buiders merchant on Monday morning what do i need to ask for? Is there a particular brand? Density? a generic name even?

 

 

[Tim Mackey]

The only generic term I know of is blue foam

On the cutting - you dont say how much practice you have had, I can tell you it does take a lot before you get it right.

The temperature of the wire has to be right too, is the PSU variable ?

 

Edited By Timbo - Administrator on 27/02/2010 20:09:58

[Andy Freeman]

Timbo, the current and the Voltage can be twiddled to a max of 200W.

 

i have had one other go of cutting and that was a tiny wing for an Limit ex. So small i could have used a sanding block

 

I did manage to get something i would have been happy using from the white EPS although the block i have it is not dense enough for making a wing.

 

I am happy to use EPS if i can get a recommended density to ask for.

[Former Member]

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[Former Member]

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[Myron Beaumont]

????

[Former Member]

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[twinstar]

thers places on the internet where you can buy blue foam in useful sizes for modellers

 

and if you want custom foam wings

http://www.foamwings.co.uk/Pages/Site/Default.asp

[r6dan]

There is a place called Shefffield insulation near me which I hear does that kind of stuff,I will pop in on monday and have a looky see as I want more foam too,if it does I can get you some...