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NEILT63

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Reply with quote  #16 
Blimey, where is the time going?

Very little progress to show. Just got the cockpit tub prepped for painting and had a first go at making a mold of the exhaust part that I need to replicate.

Can't touch it for 24 hours.

Canopy is polished and intake glued weighted and painted, I used Citadel bolt gun metal. Brushed on. only got on thin lightened coat of paint on the nose cone so far.

I am going to spray Vallejo interior green on the nose and carefully sand back to try and make it look worn

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NEILT63

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Reply with quote  #17 
Replacement part done. Good enough for where its going.

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Reflect

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Reply with quote  #18 
Hello m8
Any chance to get written explanation- kind of step by step of replications process please? Very interested what you did... if you could also give us some links it will be fab!

cheers
Christian



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TedUSA

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Reply with quote  #19 
 I agree with Christian about more info if it is readily available. I have watched videos on molding your own parts but never had a link to someone doing it "live"--that is a great advantage!
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NEILT63

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Reply with quote  #20 
On Closer inspection I wasn't happy with my first attempt, so had another go.

[4c7f2860-5a91-4f73-9906-0e62336b2005_zps9971942d] 

If I have time, I will put down what I did to make the part for you as soon as I can.

In the mean time here is the link to the resin starter kit I bought for the UK members;

http://www.modeldesignconstruction.co.uk/mall/productpage.cfm/ModelDesignConstruction/_CS001/427837/MDC%20Resin%20Casting%20Kit

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TedUSA

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Reply with quote  #21 
thank you!
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pinterest pg. of scale models/dioramas:
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NEILT63

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Reply with quote  #22 
Making the missing part


First thing to do is blue tack in the bottom to stick it to the cardboard base.

I then cut one of the flaps off the box the kit arrived in to surround the part.

This was held together with masking tape and stuck down with superglue. The edges sealed with Gator glue.

I left it overnight to set.


Next evening, I placed one supplied mixing cup on the scales and zeroed the weight.

I added 20 Grammes of the white silicon then added 2 grammes of the blue setting solution (ratio 10:1) and mixed thoroughly.

No rush here as it takes 24 hours to cure. This stuff reacts to the moister in the air and is unaffected by heat (you can't speed up the curing time).

I used an old paint brush to cover the part and minimize the chance of air bubbles on the surface.

The rest of the mixture is poured from about a foot up in a thin stream over the part, again to minimize bubbles.

A few sharp taps on the work bench helps dislodge and bring to the surface any small air bubbles that do form.

After 24 hours, remove the mold from the cardboard. it didn't stick to it coming away very easily.

There was a thin film of silicon over the bottom of the part which was cut away with a N°11P scalpel blade. I then bent the mold slightly and popped the part out.

I was very pleased with my first attempt.


The resin is like all of them, a two parter that is mixed in a ratio of 1:1 by weight.

I added 10g of each but only used about half of it.

For the second attempted mold, I poured a small amount of the mix in and agitated it with a cocktail stick (tooth pick) to dislodge the tiny air bubble that got caught in the nipple on the first one I did. I then topped up the mold so it was just over the brim.

It stayed liquid for about a minute and a half before starting to turn creamy and set.

After five minutes or so was was set but not completely hard, firm but tacky when prodded with a cocktail stick.

To make sure it was completely hard and ready to remove from the mold I left it for an hour.

An expensive way to replace such a small part, but a good skill learned for the future.

Next I'd like to try something that needs a two part mold.

I hope this helps answer any questions you may have had.
It wasn't messy and clean up is a doddle as you just leave it to set and either peel the silicon off or knock the resin out.

Any further questions please don't hesitate to ask.

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TedUSA

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Reply with quote  #23 
THANKS! I appreciate the details of the work and you taking the time to explain everything carefully......
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http://www.pinterest.com/intrstinpintrst/awesome-scale-models/


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eduardo

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Reply with quote  #24 
[eek]This is another level   [thumb][thumb]
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TedUSA

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Reply with quote  #25 
ditto Eduardo! it is going to be exciting to see the work.
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Reflect

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Reply with quote  #26 
Great - thank you for recipe! Will have to try it - have you try to replicate from resin (other words is it resin save).

cheers
Christian



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NEILT63

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Posts: 39
Reply with quote  #27 
Getting back into the model now after losing interest for a while as I just couldn't get it to go how I wanted. Made a lot of silly errors that had to be corrected too.

Purchased the Eduard set, then decided I wanted more detailed wheel wells so got the CMK set as well.

Saw on another forum that someone had used both sets together so copied them.

Sanded the bottom off the wells to just leave the walls and super-glued the Eduard interior to them. Still needed quite a bit removed from the inner wings.

Not 100% successful but will have to do.

Now busy trying to get the Aires cockpit to fit so I can crack on. Also have to figure out a way of fitting the CMK nose wheel well to the Airfix radome as it's a better shape!

It needs stripping and repainting after a failed experiment anyway.

[DSC_0069_zpsa86cdf93] 

[DSC_0071_zps4137a980] 

[DSC_0073_zpsdae74e1c] 

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TedUSA

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Reply with quote  #28 
Trials, tribulations,....and triumph. they go together. thanks for the great pictures and narrative about your work.
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pinterest pg. of scale models/dioramas:
http://www.pinterest.com/intrstinpintrst/awesome-scale-models/


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NEILT63

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Reply with quote  #29 
Made a total mess of the radome! Lost interest for now. Boxed up and back on the shelf
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TedUSA

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Reply with quote  #30 
Quote:
Originally Posted by NEILT63
Made a total mess of the radome! Lost interest for now. Boxed up and back on the shelf


very sorry to hear that. maybe a bit of time and the kit will call you back? sometimes frustration wins when you bang and bang and nothing goes right. best wishes! Please let us now if you return to this Kit. love to see you finish it when you are ready.

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pinterest pg. of scale models/dioramas:
http://www.pinterest.com/intrstinpintrst/awesome-scale-models/


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