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  #11  
Old 02-13-2019, 02:45 PM
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Lex Lex is offline
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Thank you all. It took me some time to export and resize the photos and I will try to be as quick as possible from now on. I like how the model came out, although not nearly as perfect as Inwald's cover photo where he obviously nails the build himself.

>MichaelS: Sorry the canopy won't be a lot to talk about, as I lack vacforming facilities in my current residence. So I used a spare GPM canopy that is apparently universal for all early-mark spitfires. (I have another Seafang in progress and there no escaping vacforming that one)

>alzictorini: A small apology about the thread title. Yes Baders was flying the Mk V and I had clearly not taken my history lessons seriously at all.



Model and Design Overview

The model was laser printed in a local print shop. I did not like the gloss finish typical of laser prints and thought about using a matt varnish, as the glossiness covers all printed details and leaves only the seams visible. Then I realised I could score the parts on the panel lines and those will remain visible even under high reflection.

Inwald's Spitfire Vb comes as 8 pages of 200g A4 card (with reverse-side details on 4 of them) and 2 pages of office A4 paper. The parts were quite space out so the part count was not very high. Alin's Merlin engine has only one sheet, but probably as many parts as the Spitfire it is supposed to be mounted on, as will be seen later.

To me there is something that sets Inwald apart from other designers. He does not concentrate on every single detail, but instead cherry-picks them like an artist (not that this is the best, but interesting). For those things he does decide to include, it's almost always a breeze to build. The model is designed with ease of construction in mind, often using unorthodox assembly sequences.

Cockpit

The model does lack a lot of detail on the cockpit interior, especially left and right side panels. What was included are the instrument panel, stick and pedals. Not in the mood to complete any detailing outside what's provided here, I made very short work of the cockpit, saving my energy for later.
Attached Thumbnails
Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181210_023509.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181211_005736.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181211_231643.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181211_233449.jpg  
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Working on: Spitfire V Me P.1101
On extended hold BBCV Ise Fuyuzuki
Past works: RN Zara Hull Chengdu J-20 DH Comet-4B

Last edited by Lex; 02-13-2019 at 03:44 PM.
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  #12  
Old 02-13-2019, 03:10 PM
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Fuselage and firewall

The rear fuselage section was mostly issue-free. What is shown here is as of yet a dry-fit and no mismatch was encountered.

On the front section, I located the panel line corresponding to the engine firewall (is that what it's called?). Halinski's kit probably divides parts along that line but not on this model, so I ended up slicing along this panel line and retaining only the rear half. From that point forward I decided to remove the top, left, and right panels around the engine while keeping the bottom panel. This setup reduced the dangers of unrecoverable fitting issues between the aircraft and engine, as neither of which was designed with the other in mind.

Alin's Merlin engine is designed to fit Halinski's Spitfire Vb. While being of the same aircraft, different designers naturally have different sources of references (and accuracy) when designing their models. The issue became apparent in here that right behind the firewall, Inwald has a roughly oval-shaped former, while the firewall that came with the Merlin engine (and presumably the former on Halinski's model as well) is more of a rounded square shape. As the firewall will be exposed, I opted to use the latter as authority here, trimmed the bulkhead behind it to the same shape, and coaxed the fuselage skin to fit the new shape. Fortunately nothing went wrong in this process. Although this same area would later be another source of grief.

Vertical fin

I think the geometry here is not perfect, as the Spitfire has a very smooth transition from fuselage to vertical tail, unlike what is presented here. Unfortunately there is no room to modify the shape in this instance, and I also botched the leading edge of the fin. Thinking that it will be a great idea to put a former inside the edge for extra strength, I instead sagged the leading edge. Lesson was taken and the horizontal fins later did not suffer from similar issues.

The rudder was also not an easy thing to make. It is designed as a sheet of thin paper covering a wedge-shaped internal support made of regular card. Great concept in principle, but difficult to pull off, especially around edges. I would rather have preferred a rudder made entirely from card. As evident from his own photo, Inwald himself has of course mastered the art of building it this way.
Attached Thumbnails
Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181211_233519.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181212_003834.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181212_041757.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181214_012849.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181217_222614.jpg  

Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20181218_231523.jpg  
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"The world is big"
Working on: Spitfire V Me P.1101
On extended hold BBCV Ise Fuyuzuki
Past works: RN Zara Hull Chengdu J-20 DH Comet-4B

Last edited by Lex; 02-13-2019 at 03:46 PM.
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  #13  
Old 02-13-2019, 03:34 PM
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Engine Block, Part 1

I think a fellow member on this forum built an up-scaled version of this engine (1:16, double the original size). I couldn't quite recall who, will ask the search engine to find out.

In stark contrast to Inwald, Alin's engine was almost of the extreme opposite style. It is designed as a series of boxes. While effective in breaking apart the complex shape of the engine block, the construction of which is nonetheless demanding.

On all the pumps and valves, struts and braces, meticulous attention has been paid to compensate the effect of paper thickness. It is extremely satisfying to know that when you finish rolling a part onto another, the seam will close perfectly, no gaps, no overlaps.

The same can not be said for all these box structures. These are unfolded without considering how they might be built. I guess the best way is to make 45-degree cuts on all edges, so they fit exactly as the computer says how they should fit. For me, the accumulation of paper thickness led to errors that required me trimming an entire mm from a particular part. Surely that can't be part of the original plan... For the entire duration I was worried that the engine will end up too long to fit between the firewall and propeller base

Adding to this, the cylinders are designed as one whole wavy part for an entire row of 6 cylinders. These attach, at an angle, without any structural support, to the box containing the crankshaft at the bottom. I think this is one of the most difficult parts of the entire build, for those who are also intending to build one.
Attached Thumbnails
Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20190106_055807.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20190107_011840.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20190107_011851.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20190107_011859.jpg   Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20190108_205633.jpg  

Supermarine Spitfire Mk I, 1:33 [Inwald/Alin]-s20190108_205655.jpg  
__________________
"The world is big"
Working on: Spitfire V Me P.1101
On extended hold BBCV Ise Fuyuzuki
Past works: RN Zara Hull Chengdu J-20 DH Comet-4B

Last edited by Lex; 02-13-2019 at 03:47 PM.
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  #14  
Old 02-14-2019, 07:51 AM
ricleite ricleite is offline
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Thanks for taking your time to show the pictures
The engine is pretty! You mention difficulties regarding paper thickness. Maybe they could be overcome by printing on thinner paper. Choosing the paper is an advantage of downloaded kits. To get the same effect, I often delaminate GPM's thick and Halinski's not so thick paper. Both cope well with delamination.
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  #15  
Old 02-14-2019, 03:17 PM
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romanmodels romanmodels is offline
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good work Lex
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