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[Marmoi]

Right, now for a bit of wood working, namely making the bases for the funnel.

I used 5mm play for the top and bottom and cut them out on the jigsaw. Once sanded I fitted the two parts together with 10mm spacers.

[Marmoi]

The side walls were then applied using 1/64th ply

[HS93 (RIP)]

are you going to pump water vapour up the funnel ? if so water vapour has problems with small tubes feeding it , you may need to do a test if you are going to use the size of holes you have in the base of the funnel , you may have to go over to oil  based smoke 

Peter

[Marmoi]

Hi Peter,

The holes in the bases are just for the air intake to keep the fans fed, the two 20mm connections are for the vapour.

The fogging unit was special built for this model and tests have shown that it should produce enough vapour. Follow the link below to have a look;

http://www.youtube.com/watch?v=iAXpWRQQlCY

Because the funnel is designed with a twin wall I can draw air down as well as push vapour up, see pic diagram below.

Mark

[raflaunches]

Hi Marmoi

Fantastic to see your build log, I have been watching your progress from the beginning when you bought the hull from Ron Dean! Sadly the last time I saw you was at the National Model Boat Show where you showed me how the turrets worked, have to say that is the best method I have seen to rotate all the guns smoothly and all together and individually. Unfortunately I probably won't see it again this year since I am in the Falklands until late November but I can see you have done a fantastic job so far and I hope to see the Indomitable next year!
Best regards

Nick B

[Yarpie]

Mark,

what an astonishing build.

Great, great attention to detail and supreme patience.

Every aspect has been researched to the N'th degree.

It really is a credit to you and I'm in awe of your skills.

Sandy.

[Marmoi]

Thank you both, I am enjoying this build, the research is very interesting as I am trying to get things working correctly, while trying to get into the ship designers heads of he time.

The indomitable will be off to Haydock park in a couple of weeks, where I hope to be demonstarting some of the features and the new funnel.

Mark

[Marmoi]

Actually had a nice enough day to get the hull out today and fit the funnel to the fogging unit and it is looking good so far. I won't steam it up until the inside has been painted as I don't want any corrosion on the Brass work.

Remembered to put a 50 pence piece in for scale this time!

[Marmoi]

3D PRINTING

I have been asked about how the 3D printing technology works, so here are a couple of videos.

Main funnel halves -Strong White flexible Sintered Nylon

http://www.youtube.com/watch?feature=player_embedded&v=aBNGnfoGGfQ

Funnel cap and heat shield - Ultra detail material

http://www.youtube.com/watch?v=C7Im64nPb9Y

(Sorry about the naff music  )

[Marmoi]

Okay, I have been a bit quite on this project for a while, but that has been a combination of being very busy at work and large amounts of bad weather which means I have not been able to get the boat out to work on it 
Plus a couple of other projects that were at least modelling related 

[Marmoi]

At the end of last season, I had a couple of weekends free (does happen now and then), so decided to get to work on the design of the main deck. So with a sheet of 8x4 5mm ply and my trusty pencil I set about cutting the sections out and fitting them.
 
I have decided to cut the deck into sections as it will be awkward to handle as one long length, so I have made breaks at the forward breakwater, just after the mid sections turret, just after the funnels and aircraft hangers and finally at the end of the stern accommodation section.

[Marmoi]

I then cut a glued support rings for the main turret barbettes.
(I am not looking forward to moving the turret electronics and wiring to the new deck from the test board - but that will be another task 

[Marmoi]

I then moved up a level and started building the main sections of super structure that will sit on the deck in order that I could work out where everything had to be placed and how it would fit.
The areas to look at were
1. The island for the main forward supper structure / bridge
2. The funnel island
3. The rear accommodation and workshop area
4. The Walrus seaplane catapult deck

[Marmoi]

1. The island for the forward superstructure / bridge.
As I have mentioned before I am planning to make the bridge structure from Photo etch, so I needed to build a solid base that would allow me to slide the structure over and hold it in place. I am also going to use two 1.2W LEDs to shine up frosted Perspex tubes that will in turn illuminate all the decks.
 
As access is not required through this point in the deck, mainly because the foot print is so tiny I decided to use a 10mm block of Tufnol so I could mount the LEDs in it as well.

[Marmoi]

2. The funnel island
The main profile was cut from mdf (this will all be faced in the end, but will give me a lot of strength) and then top with plywood.
The front angle section of the cowling that runs up from the boilers was again made from mdf and milled to the correct profile
Sections were then cut out at the rear for the two Walrus hangers and the two bases for the funnel that were made previously were aligned and holes drilled through

[Marmoi]

3. The rear accommodation and workshop area
Again the profile was cut from mdf and covered with plywood.

[Marmoi]

But this time I had to allow for a small area of flying deck around the turrets to I routed out the plywood in that area and re-fitted with thinner ply, this area will be eventually planked so the matching of grain is not a problem

[Marmoi]

As I had moved the main workshops to make room for the Walrus's I have placed part of the workshop where the ships boats were once stored (compliment of boats reduced after re-fit), along with the new position for the rear mast.
 
Another workshop will go between the two hangers eventually.

[Marmoi]

4. Tha catapult deck
 
This area will be removable, but must interlock with the adjacent areas as can be seen above and below.
 
So that's me up to date for the moment. 

[Marmoi]

With the funnel island built, I thought it was time to get on with the funnel, so the inside assembly was given a good clean and prep and then sprayed Satin Black to give it a good sooty look.

[Marmoi]

The two halves were then pinned and bonded together and the remaining seam filled, sanded, spray fillered and then the whole funnel given a final smoothing with 1200 grade wet and dry.

[Marmoi]

With the casing complete it was now time to think about the external detailing, the top strip was applied using micro strip and then the various fixing holes for the top pulleys and main steam pipes were were out and drilled at 0.7mm.

[Marmoi]

Now for the interesting bit!


The steam pipes on a trunked funnel were extension from the original combined, so the forward funnel pipes were a convoluted piece of workmanship and twisted around the funnel.


I looked and experimented with both Copper and Aluminium tubing and after some trials decided to go with the Copper as i could get tighter bends without the collapsing.


The tubing is best bent using bending springs as it will prevent (as much as possible) the tubing from folding.


The Aluminium tubing I had was used for the straight pipes.

[Marmoi]

So, over the next couple of days I gently bent and teased the tubing into shape, taping it in position as I went.

[Marmoi]

The pipe fixings were made from Jokita copper eyelets which were opened up and enlarged using pliers and a piece of the tubing.