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What cheap foam like material can i get in the UK?

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Mike Oblengo08/02/2016 01:12:57
7 forum posts

I am a beginner and I want to use some cheap material to build a plane or two.

The yanks get access to cheap materials i wondered what the most cost effective material we have access to in the UK is.

Phil May08/02/2016 16:46:26
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1520 forum posts
154 photos

Hi Mike, have a look at correx sheet plastic, I know it's  not foam but a great material to use none the less. 

I've had great success with this and you can build an air frame for about £25

 

20150628_151557.jpg

Edited By Phil May on 08/02/2016 16:47:30

WolstonFlyer08/02/2016 18:41:01
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2104 forum posts
189 photos
I have built several of the FliteTest foam board models from the heavier foam board that is available in A1 size sheets in Hobbycraft. They sometimes have it on special offer if you buy 5 sheets.

Some other websites sell it, have a search for "West Design 5mm A1 Foam Board - White"

The paper that is bonded to both sides of the foam is glossy and heavier than the dollar tree stuff in the USA but I have done lots of searching and never found a low cost equivalent over here.
Dave Hopkin08/02/2016 18:49:48
3672 forum posts
294 photos

The main material for non moulded foam models is a material called Depron, originally as thermal insulation board, its now also sold specifically for aero modelling

Come in sheets upto 1200mm x 800mm (smaller boards also available)

Thicknesses 6mm & 3mm

Also graded by colour - white is more rigid than grey and sends better, the grey is more flexible and cant be worked into quite aggressive curves with care but doesnt sand quite as well

Its available at many model shops or from fleabay or Depron UK

Simon Chaddock08/02/2016 18:55:40
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5733 forum posts
3034 photos

Mike

If you can get it Depron is a popular foam building material. The plane in my avatar is made of Depron. 

Normally available in big 3mm and 6mm thick sheets. Each full sheet is in fact so big (1000mm x 700mm) it cannot be posted (unless you buy a full 20 sheet box!) so it has to be collected. If you are lucky your nearest model shop may carry it.

Hobby King (UK warehouse) have just started selling something similar - 20 smaller (500x700) sheets for £9.65. and £5.68 postage.

Don't forget you will also need 'foam safe' glue and paint!

Edited By Simon Chaddock on 08/02/2016 19:00:20

Mike Oblengo10/02/2016 12:23:14
7 forum posts

Thanks guys for the comments. Would the HK foam be suitable? If so would 3mm or 5mm be better?

http://www.hobbyking.com/hobbyking/store/__86288__Aero_modelling_Foam_Board_3mm_x_500mm_x_700mm_White_UK_Warehouse_.html

I am just after something for indoor or for a small park.

Stephen Jones10/02/2016 18:15:51
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2853 forum posts
1618 photos

Hi Mike,

For indoor use 3mm is fine and Hobbking should be ok . although i have not used it i hear it is lighter and softer , so should suite indoor use.

I made the Bambino out of 3mm Depron .

bambino6.jpg

And the thread is here

Steve.

gliggsy10/02/2016 18:35:13
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103 forum posts
4 photos

Phil, that looks a handsome job you have made with the correx, you maybe ought to do a build log and share the methods.....glyn

Mike Oblengo10/02/2016 19:14:52
7 forum posts
Posted by Stephen Jones on 10/02/2016 18:15:51:

Hi Mike,

For indoor use 3mm is fine and Hobbking should be ok . although i have not used it i hear it is lighter and softer , so should suite indoor use.

I made the Bambino out of 3mm Depron .

bambino6.jpg

And the thread is here

Steve.

That is one beautiful plane.

The HK foam does not have paper so would how would i go about reinforcing it? Also is there much difference between 3mm and 5mm?

Many thanks

Mike.

WolstonFlyer10/02/2016 19:25:46
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2104 forum posts
189 photos
Some people use laminating film or clear packing tape to add some strength, or 0.5mm x 5mm carbon strip, or various sizes of Carbon Fibre rods and tubes, or wooden bbq skewers etc. It depends on how much weight you can add (or not) and the expense you want to go to., I have some indoor models built entirely from 3mm depron with only a 3mm carbon tube as a wing spar.

To answer the question, 2mm (sorry)


The 5mm will be heavier.

Edited By WolstonFlyer on 10/02/2016 19:26:50

Mike Oblengo11/02/2016 23:13:13
7 forum posts
Posted by WolstonFlyer on 10/02/2016 19:25:46:
Some people use laminating film or clear packing tape to add some strength, or 0.5mm x 5mm carbon strip, or various sizes of Carbon Fibre rods and tubes, or wooden bbq skewers etc. It depends on how much weight you can add (or not) and the expense you want to go to., I have some indoor models built entirely from 3mm depron with only a 3mm carbon tube as a wing spar.

To answer the question, 2mm (sorry)


The 5mm will be heavier.

Edited By WolstonFlyer on 10/02/2016 19:26:50

Thanks,

What would you suggest would be better to get 3mm or 5mm HK foam?

WolstonFlyer11/02/2016 23:31:47
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2104 forum posts
189 photos

I would say 3mm for indoor models, I have never used that hobbyking foam though, only proper Depron, if the HK stuff is similar it will be OK.

Simon Chaddock12/02/2016 00:50:55
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5733 forum posts
3034 photos

Mike

The thickness required all depends on how you use it. Obviously a single 3mm sheet is pretty flexible so would need additional support beyond even a small size. However if you 'build up' a wing with an internal structure and cover it top and bottom with a 3 mm skin it in effect becomes a much thicker (say 25 mm) but hollow piece of foam. As a result it is very nearly as strong as if it was solid but less than half the weight.

My first Depron wing was 40" (1016 mm) span on an 18 oz (510 g) electric plane and was made from just 3mm Depron. Fully aerobatic it only failed after a good few crashes and repairs.

My bigger heavier planes wings are built in the same sort of way but use a spar as well.

My 40" Super Cub is built entirely from 2mm Depron - apart from the balsa wing struts (they are fully load carrying) and the wire undercarriage..

Painted

Sorry - I forgot the wheels. Each are built up from 4 discs of 6 mm grey Depron with sheet plastic centres.

As I said the thickness of the foam depends on how you use it.wink 2

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