Blessing in Disguise?

[aviator_edb]

OK, so I decided to redo the LG bulkheads that I screwed up. This necessitated ordering a new sheet of 1/4" H100 from Aircraft Sruce. I got the foam today and not I am in a quandry. The foam I received it the right size but it is VERY different from the foam I originally had.

 

I old foam had a much more 'open' appearance, closer to what H45 looks like. The new stuff is much smoother appearing closer to the 18lb last a foam (but not as 'heavy')

 

Both foams are tan but the new stuff is much denser than the original stuff and I am wondering if the original stuff was not the correct foam.

 

How can I be sure if the original foam was wrong or if I received the wrong foam the second time instead?

[rickh]

Attached photo may help. H-100 on top, 18lb Last-a-foam on the bottom. Both appear similar, the label on the bottom one is a giveaway though The H-100 measures .260" thick, Last-a-foam .201"

 

In my experience, H-100 is very flexible, you could bend it around a large coffee can. Last-a-Foam would break.

 

Rick

[Phil Kriley]

Attached photo may help. H-100 on top, 18lb Last-a-foam on the bottom. Both appear similar, the label on the bottom one is a giveaway though The H-100 measures .260" thick, Last-a-foam .201"

 

In my experience, H-100 is very flexible, you could bend it around a large coffee can. Last-a-Foam would break.

 

Rick

And then there's the OTHER tan stuff that crumbles into dust if you look at it wrong...used for thicker buildups and is very easy to carve. I can't remember what it's called. Basically the consistency of the foam used by florists.

[Big Steve]

phil said:

 

consistency of the foam used by florists.

This lovely material is called urethane I probably spelled it wrong.

build on STeve

[aviator_edb]

Thanks for the help everyone. The foam is definately PVC and not urethane. It looks like my original foam was the wrong foam and the new stuff if H100. Thanks for the pics Rick.