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How to make a Canopy with no vacform

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Martynk
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Joined: 23 Mar 2017, 21:23
Location: Haslington
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Re: How to make a Canopy with no vacform

Post by Martynk »

Thanks Roo
Mark Richards
Posts: 28
Joined: 18 Mar 2015, 21:12
Location: Penkridge, Stafford, England

Re: How to make a Canopy with no vacform

Post by Mark Richards »

Hi Roo,
Thanks for showing us your method of canopy forming, I have done something similar in the past.
For my Swallow canopy, I made a frame, similar to an old tennis racquet press, and trapped the plastic sheet between the two sides using wood screws. The apertures in the frame are of different sizes, the lower one being a close fit to the base of the plug and the upper one about 10mm larger all round.
With the plastic sheet held firmly in the frame, I heated it under the grill in the kitchen and waited for the plastic to go soft.
I then placed the plug on the floor and pushed the frame over it as far as I could. It took considerable pressure, and I found I had to stand on the sides of the frame to push it all the way down.
I did find that I had more success when I heated the plug with a hot air gun before pressing the frame down over it.
I love the simplicity of your method, and next time I do it, I will make the plug as you have done and grip the plastic sheet between the battens as you have shown. I will also try the cooking oil option on the plug as you suggest.
Thanks again.
Regards,
Mark
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terry white
Posts: 607
Joined: 18 Mar 2015, 21:08
Location: wareham,dorset.england

Re: How to make a Canopy with no vacform

Post by terry white »

Hi Mark, cooking oil; under the grill; you making lunch or what? :lol: Ter.
Nigel Argall
Posts: 153
Joined: 20 Mar 2015, 18:26
Location: Cornwall

Re: How to make a Canopy with no vacform

Post by Nigel Argall »

A few more questions:

1) Can you confirm what material it is that you are using PTGE PTFE - what does that stand for?
2) Where do I get it - tried PTGE on ebay but no results.
3) I see the top quality Lidl oil being put to good use but how 'perfect' does the mould actually have to be - does material stretch across imperfections or show them up?
4) I seem to remember reading somewhere that some people mould a canopy but then mould a second one directly on top of that so the first one effectively covers point 3) - have you ever tried that?

Thanks for the help!
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Martynk
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Location: Haslington
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Re: How to make a Canopy with no vacform

Post by Martynk »

Hi Nigel

Its PETG

Try this: http://www.ebay.co.uk/itm/CLEAR-PETG-Sh ... 1518059054?

However, I am not sure what thickness is used
roo Hawkins
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Joined: 18 Mar 2015, 20:12
Location: Northamptonshire

Re: How to make a Canopy with no vacform

Post by roo Hawkins »

It is 1 mm thick , that is expensive on ebay re read the thread there is a link to eagle plastics . I pay less than £6 for that,
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Stuart Ward
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Joined: 21 Mar 2015, 18:23
Location: Pukekohe NZ

Re: How to make a Canopy with no vacform

Post by Stuart Ward »

Try going to your local plastic sheet supplier
I bought a whole sheet of petg 1mm thick 1.2m x 2.4m for $25 NZ. Cheap as chips.
Stu
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