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Fouga magister 1/4.5 moulded from scratch

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dirk tinck12/08/2019 23:05:48
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213 forum posts
358 photos

20190812_012050.jpg

dirk tinck12/08/2019 23:07:18
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213 forum posts
358 photos
  1. 20190812_221511.jpg
dirk tinck12/08/2019 23:23:12
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213 forum posts
358 photos

The last image shows the root-side ready to mould. This will be the last of 22(!) moulds for the wings.

the reason it took so long was the high temperatures we've had the last few weeks,up to 41 °C.

It's impossible to work with epoxy at this rates so i had to wait till late at night to startclock laminating.

It's in the twenties now so i can move on.Just a few day's and i can start making wings : FINALLY.

Next post will show the whole of the 22 moulds.wink

Stay tuned and comment please! That's what keeps me going !

McG 696913/08/2019 06:28:18
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2530 forum posts
977 photos

Still there and watching, Dirk.

It's amazing how many little bits you have to prepare and mould, but I guess you'll be rewarded soon now.

Looking forward to seeing your first results leaving their moulds...

Cheers

Chris

Martyn K13/08/2019 09:36:59
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4867 forum posts
3538 photos
Posted by dirk tinck on 24/05/2019 23:47:05:

Sealing with PVA20190519_211703.jpg

This is an amazing How-To.. Thank you.

Is that a block of PVA? I have only ever seen it in liquid form..

Martyn

dirk tinck13/08/2019 11:40:18
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213 forum posts
358 photos

Hi Martyn,it is indeed liquid Pva,applyd with a spunge

dirk tinck13/08/2019 11:42:10
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213 forum posts
358 photos

Sorry,applied...

Martyn K13/08/2019 11:54:14
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4867 forum posts
3538 photos

Thanks Dirk

dirk tinck13/08/2019 23:22:25
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213 forum posts
358 photos

Hi all !

Another evening in the shop and mould nr 22 is a fact!

Next step is to reinforce here and there , bolt everything together , clean-up the edges and get that wing out !20190813_232210.jpg

dirk tinck15/08/2019 22:29:25
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213 forum posts
358 photos

20190815_222301.jpg20190815_215526.jpg20190815_215219.jpg20190815_214737.jpg20190815_214543.jpg20190815_214514.jpg20190815_214507.jpg20190815_213824.jpgFoto's of the mould reinforcements.To prevent the mould from warping i placed some wooden scrap over the wing.They're glued with some epoxy mixed with cotton flakes to make it less liquid.The fillet is then covered with 1 layer of 200 gr glasscloth and resin.Strong as hell when dry!!20190815_213817.jpg

The reinforcements also serve as a support when the mould is upside down to form the actual wing(to prevent a warped wings)

dirk tinck15/08/2019 22:30:49
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213 forum posts
358 photos

Sorry,they're in the wrong sequence....embarrassed

Stephen Jones15/08/2019 23:55:30
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2659 forum posts
1503 photos

My word there is a lot of work involved in making these molds.

You have shown some patience and dedication sir.

Steve.

SR 7116/08/2019 07:33:33
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277 forum posts
61 photos

Truly superb Sir, i have built one jet using this method, very dificult and not in the same class as yours

Ill change that remark, not even in the same school

Thank you for showing

Tony

Reuben Saliba16/08/2019 08:01:06
6 forum posts

The thing that always amazes me is how does one work and take photos at the same time. Epoxy and cameras do not mix otherwise there could be a second person taking the shots who has clean hands or gloves. I do make this stuff as well but am unable to work and take photos at the same time as I do not have anybody assisting me. I usually take photos after a session is done.

I truly understand the "pain" one goes through in making a full composite model but in the end it is worthwhile as copies could be made in the event of something happening to the model. Very nice work!

Reuben

Chris Freeman 316/08/2019 08:27:01
235 forum posts
305 photos

Very nice work. When you see the amount of work and materiels it takes to make the moulds you have admire the commitment to making them. I had a little involvement with a P51 and I think I would rather stick to using balsa.

dirk tinck17/08/2019 00:49:46
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213 forum posts
358 photos

Thanks for replying gents !

It is indeed a work that is not done in six months,but in the end (i need three planes now)it will be faster then starting three or even more models from scratch.

As for the foto's,i use my mobile whenever i think there is something to show that helps the viewers to follow the build.And yes ,sometimes there are traces of epoxy on my screendont know,nothing that a tissue with acetone can't handlewink 2

dirk tinck17/08/2019 00:57:25
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213 forum posts
358 photos

After bolting everything together and cleaning-up the edges its time to take the moulds apart.Carefully twisting the structure helps to get a wooden wedge (I use mixing sticks) between the parts.If you follow the insructions of the epoxy supplyer ,and use a good mould release agent there schould be no problem taking them apart.20190816_174640.jpg

dirk tinck17/08/2019 01:01:22
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213 forum posts
358 photos

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dirk tinck17/08/2019 01:04:57
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213 forum posts
358 photos

I noticed one default on a sharp edge on the root-side mould but that will be no problem to repairembarrassed20190816_174748.jpg

dirk tinck17/08/2019 01:08:26
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213 forum posts
358 photos

Next task is to clean up the moulds and prepair them (waxing again)to make a first set of wings !

Stay tuned !!

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