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I am currently working on a Boushh pepakura helmet, which I got from Skip, it is a great file. I used 110 lb. index card stock and used Elmer's Pro Bond wood glue to assemble it. My next dilemma was how to reinforce the helmet. I didn't really want to deal with fiberglass and resin due to the smell and mess so I looked around online and found a great alternative. I found this from a guy off the 405th Halo site. Using Smooth Cast 320 and 321. I used the 321 on the outside and the 320 on the inside. They are both are a 2 part plastic casting. You have about 10 minutes to work with the 321 and about 5 minutes with the 320. I coated the whole outside of the helmet with the 321 first and let it dry and it creates a nice hard shell. Then I proceed to coat the inside with the 320. I wasn't happy with how rigid it was getting in the larger areas so thinking how fiberglass would be a good thing to use I decided to try something, now don't laugh because it worked great, i used some old blue jeans, and coated it with the smooth cast. It is hard as a rock. So far I am extremely happy with how this is turning out. This seems to be a good solid method of reinforcing the paper as an alternative to fiberglass.

<blockquote data-quote="toolguy301" data-source="post: 308640"><p>I am currently working on a Boushh pepakura helmet, which I got from Skip, it is a great file.&nbsp; I used 110 lb. index card stock and used Elmer&#039;s Pro Bond wood glue to assemble it.&nbsp; My next dilemma was how to reinforce the helmet.&nbsp; I didn&#039;t really want to deal with fiberglass and resin due to the smell and mess so I looked around online and found a great alternative.&nbsp; I found this from a guy off the 405th Halo site.&nbsp; Using Smooth Cast 320 and 321.&nbsp; I used the 321 on the outside and the 320 on the inside.&nbsp; They are both are a 2 part plastic casting.&nbsp; You have about 10 minutes to work with the 321 and about 5 minutes with the 320.&nbsp; I coated the whole outside of the helmet with the 321 first and let it dry and it creates a nice hard shell.&nbsp; Then I proceed to coat the inside with the 320.&nbsp; I wasn&#039;t happy with how rigid it was getting in the larger areas so thinking how fiberglass would be a good thing to use I decided to try something, now don&#039;t laugh because it worked great, i used some old blue jeans, and coated it with the smooth cast.&nbsp; It is hard as a rock.&nbsp; So far I am extremely happy with how this is turning out.&nbsp; This seems to be a good solid method of reinforcing the paper as an alternative to fiberglass.</p></blockquote><p></p>

[QUOTE="toolguy301, post: 308640"] I am currently working on a Boushh pepakura helmet, which I got from Skip, it is a great file. I used 110 lb. index card stock and used Elmer's Pro Bond wood glue to assemble it. My next dilemma was how to reinforce the helmet. I didn't really want to deal with fiberglass and resin due to the smell and mess so I looked around online and found a great alternative. I found this from a guy off the 405th Halo site. Using Smooth Cast 320 and 321. I used the 321 on the outside and the 320 on the inside. They are both are a 2 part plastic casting. You have about 10 minutes to work with the 321 and about 5 minutes with the 320. I coated the whole outside of the helmet with the 321 first and let it dry and it creates a nice hard shell. Then I proceed to coat the inside with the 320. I wasn't happy with how rigid it was getting in the larger areas so thinking how fiberglass would be a good thing to use I decided to try something, now don't laugh because it worked great, i used some old blue jeans, and coated it with the smooth cast. It is hard as a rock. So far I am extremely happy with how this is turning out. This seems to be a good solid method of reinforcing the paper as an alternative to fiberglass. [/QUOTE]

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