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  1. Member Since
    Jun 2005
    Posts
    3
    Jun 23, 2005, 8:24 AM - help pls? #1

    can anyone tell me what is Rotocast Vinyl? are helmets made of this material strong enough to hold electronics like fans, batteries and speakers in them?

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  3. bigkidbiggertoys's Avatar
    Member Since
    Mar 2002
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    1,278
    Jun 23, 2005, 10:04 AM - Re: help pls? #2

    Rotocasting is the PROCESS that is used to distribute the vinyl material in the mold while it is still in it's liquid state. Think of a gyroscope or gimble with the mold locked in, rotating in 3 different axis. This is so the material distributes evenly throughout the mold. The Don Post & Rubies helmets are made this way & are flexible & durable. You won't have any problem holding the equipment you require but watch out for what type of adhesive you use to secure them. Velcro works great for batteries & good old hot melt glue is excellent for anything else. Don't use the kind available in the craft section, not all hotmelt glues are the same, use a commercial grade. I found some at Home depot (Arrow Brand Bss6-4) & I haven't been able to find anything of equal or better. Hotmelt also has the advantage of letting you remove parts without damaging the helmet. Simply break the glue bond by putting a few drops of methyl hydrate on the hotmelt. It will wick under the hotmelt & you will be able to peel the part out. The methyl hydrate quickly evaporates & will not damage the vinyl helmet or harm painted surfaces.
  4. Member Since
    Jun 2005
    Posts
    3
    Jun 23, 2005, 10:08 AM - Re: help pls? #3

    thanks for the info bigkidbiggertoys. if i get a rotocast vinyl bucket, is it possible for me to reinforce the interior so that it won't be so flexible, making it sturdier?