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 Post subject: Vacu-Form?
PostPosted: Thu Dec 31, 2009 7:19 am 
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Paper Model Overlord

Joined: Fri Mar 30, 2007 1:29 pm
Posts: 600
Location: Maryland
Does anyone do Vacu-formed canopies? I really need some help with one, and if someone could make one, I'd be more than happy to pay for it!

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 Post subject: Re: Vacu-Form?
PostPosted: Fri Jul 16, 2010 8:31 am 
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FG 26# stock
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Joined: Sat Dec 19, 2009 2:05 pm
Posts: 13
Location: Coventry, UK
I don't do vacu-form per se, but squish form which is fast and almost as good for canopies.

First you cut a shape in plywood (i.e. the width/length of the bottom of the canopy), and carve+sand a balsa former:

Image

Then you clamp some 'easter egg packet' plastic sheet to the ply frame. Heat under grill or heat stripping gun, and just as it starts to wilt you ram the former through the hole. After it all cools down you just cut the canopy from the plastic sheet.

Image

I recently tried using the paper canopy from a paper plan to shape milliput into the canopy shape (while sticking a cocktail stick into the back of the blob for later). When it dries you have the canopy former with a stick to hold it by ;) Very successful.

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 Post subject: Re: Vacu-Form?
PostPosted: Mon Jan 23, 2012 8:15 am 
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FG 26# stock

Joined: Wed Aug 24, 2011 8:27 am
Posts: 21
Sorry if this thread is cold, but:
Instructibles.com has several tutorials on vacuum forming.
Harbor freight has a néat little heat gun and a device that lets you draw a vacuum from an air compressor
2-litre bottles can be a good course of thermo-forming plastic

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 Post subject: Re: Vacu-Form?
PostPosted: Mon Jan 23, 2012 12:54 pm 
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FG 26# stock
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Joined: Sat Dec 19, 2009 2:05 pm
Posts: 13
Location: Coventry, UK
Ah this thread is very cold, but thank you for the suggestions.

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