RC Submarines RC submarine discussions.

how to scratch build hulls?

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Old 01-20-2012, 11:20 AM
  #1
twiglet123
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Default how to scratch build hulls?

My basic plan is to build a 1/72 or bigger wet hulled rc akula from scratch as i don't feel like shelling out for the fibreglass hulls, are there any particularly good or recognised ways of making a submarine hull other than making a fibreglass mould route?

My plan is to make an internal Skelton out of ply and then cover it in something i haven't decided on yet for the outer hull perhaps thin ply but that might e a bit delicate.

My questions are does my current planned route work or is it doomed to fail and is making a fibreglass mould and doing it that way as difficult as it looks and if not are there any good guides on how to do it.

Thanks in advance
twiggy

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Old 01-20-2012, 12:57 PM
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Default RE: how to scratch build hulls?

Here's how I am producing molds. The plug is made from foam board and then covered in drywall filler. It's easy to sand and it's sealed with KILZ drywall sealer.

http://forum.sub-driver.com/showthre...ass-1-72-scale

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Old 01-22-2012, 02:51 AM
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Default RE: how to scratch build hulls?

Unless you plan to make several hulls, a "fiberglass resign" mold is expensive. It's now $ 35 or more a gallon.

However FYI as an example

http://groups.yahoo.com/group/Jetnautilus/
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Old 01-24-2012, 06:37 PM
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twiglet123
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Default RE: how to scratch build hulls?

I had a feeling that might be the case, are the any perticularly recommended techniques for just producing one off hulls or is fiberglass the only way?
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Old 01-25-2012, 02:18 AM
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Default RE: how to scratch build hulls?

There is another method to copy a plug using a layered buildup of a rubberlike mold material. Such a mold is less durable than a fiberglass resin type, but may be suitable for limited reproductions. A google search should bring up several detailed discussions describing the method and materials.
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Old 02-05-2012, 10:18 AM
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Default RE: how to scratch build hulls?

Steve neil made a book called RC Submarine modeling for dumb asses
http://sneillfx.com/page28

It really is worth the purchase price.

There are also quite a few build threads on the "lost foam" technique on www.subcommittee.com
Most recently one from a guy doing his first scratch built Russian Alfa
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