1:72 Airfix Bristol Bulldog

1:72 Airfix Bristol Bulldog

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dr_gn

Original Poster:

16,163 posts

184 months

Saturday 23rd November 2019
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72twink said:
I see the Bulldog lives on as it’s down for December re-release - good news for all those inspired by your build!
Yes, although I wonder if the moulds are worn, and if so if they’re repaired/upgraded? Mines a very early moulding, and has pretty good detail. It’s also a harder plastic than current Airfix kits, which I prefer to work with.

dr_gn

Original Poster:

16,163 posts

184 months

Saturday 23rd November 2019
quotequote all
I’ve been experimenting with polished metal finishes for the forward fuselage. One of the latest “amazing, must-have, easy to use” systems is Xtreme metal from AK Interactive. I saw some reviews, so got the black base and polished aluminium. I did a test on an ancient Matchbox Mosquito nacelle. Tried it on bare plastic and Tamiya primed surfaces. I didn’t find it particularly easy to apply, and it didn’t look much like a polished surface to me. I then put some bare metal foil next to it, and applied some Klear, MicroSol and a spare decal:



No contest; for me, if you want bare metal, use real bare metal.

dr_gn

Original Poster:

16,163 posts

184 months

Saturday 23rd November 2019
quotequote all
Next experiment is refining the bombs supplied in the kit:





I opted to bin them becasue they are so crude, so I put them aside and filled the bomb rack holes under the port wing. Then I thought I’d see what they should look like, and found what I think is the right bomb in the WW2 Equipment Data website. I eventually decided to model the bomb in CAD, using the original diagrams as a guide within Fusion 360:








A few details to add, and then it will be a good test for a resin 3D printer. If it can print this (at 8 mm overall length), it can print anything...

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 24th November 2019
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Fuselage scribing pretty much done:




dr_gn

Original Poster:

16,163 posts

184 months

Thursday 5th December 2019
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The sanded wing ribs didn’t look right - as if the ribs were about 200 mm wide. I thought I’d experiment with one of Harry Woodman’s favourite techniques - “skinning”, as featured in his classic plastic modelling book:



I had some 0.1 mm Tamiya Pla Paper left over from my home made Tornado canopy, and a spare Airfix Gladiator upper wing:



First job is to draw around the outline and pencil in the rib positions:



Then lightly go over the lines with a ball-point pen. The tape is there to try and get a consistent edge to the riblets:



You’re left with a fairly realistic looking wing skin:



...which is epoxied to the sanded, flat wing, with the edges being attached with poly cement:



The excess paper edges are then sanded away and blended to the periphery of the wing. The result doesn’t look bad for a first attempt:



Still undecided. It’s a risky process. I might experiment further with 0.6 mm strips of Tamiya tape overcoated with Mr. Surfacer instead.

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 8th December 2019
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Decided to try the skinning on the ‘real’ wing - nothing ventured nothing gained. If it turns out badly in the end, I’ll buy another kit and try something else.

Marking out:



After flatting the tips (still work to be done there - it’s impossible to get the plastic to conform to a compound curve), and a coat of Vallejo primer:



Now for the bottom wing...

4321go

638 posts

187 months

Sunday 8th December 2019
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Think that looks really convincing. How big are 1:72 hand-hold holes?

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 8th December 2019
quotequote all
4321go said:
Think that looks really convincing. How big are 1:72 hand-hold holes?
Hand hold holes? On the top wing? About 1mm long, but they need some work to get them symmetrical.

Problem now is where are the wingtip lamp bracket holes hehe

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 8th December 2019
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Lower wing done - two halves:



Edges secured with cyano - after much experimentation...



Now for the ailerons.

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 8th December 2019
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Ailerons:







They’re saying it’ll be over by Christmas ...

Eric Mc

122,029 posts

265 months

Sunday 8th December 2019
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Looking good.

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 8th December 2019
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Scratched up a pair of machine guns from brass tube, and made a replacement crash pad out of plastic rod to replace the the moulded-in one I removed previously:


Eric Mc

122,029 posts

265 months

Sunday 8th December 2019
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What markings do you intend to put on it?

dr_gn

Original Poster:

16,163 posts

184 months

Sunday 8th December 2019
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Eric Mc said:
What markings do you intend to put on it?
29 Squadron, North Weald, the decals are on the o/p.

Eric Mc

122,029 posts

265 months

Sunday 8th December 2019
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Nice.

dr_gn

Original Poster:

16,163 posts

184 months

Tuesday 10th December 2019
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Re-riveted and scribed the upper wing fuel tanks:



Couldn’t face skinning the wing undersides, so I’m giving another technique a try; representing the wing rib cap protrusions with 0.6 mm Kabuki tape. I’ve sealed it with Klear, and will give it a couple of coats of primer when it’s all in place:



The printed 20lb bombs turned out OK for a first attempt, but I think a bit more optimisation of the settings is needed. I painted them just to get a benchmark. Way better than the originals even as they are:


dr_gn

Original Poster:

16,163 posts

184 months

Thursday 12th December 2019
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Made a start on painting and assembling the cockpit:





Made a false floor for it out of plastic paper. Still needs a few wires adding.

Neonblau

875 posts

133 months

Friday 20th December 2019
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What tool is that you're using in the wing picture? That looks really useful for a couple of projects I have in mind.

dr_gn

Original Poster:

16,163 posts

184 months

Friday 20th December 2019
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Neonblau said:
What tool is that you're using in the wing picture? That looks really useful for a couple of projects I have in mind.
It's an RB riveting tool, in a standard blade holder:

http://www.radubstore.com/index.php?main_page=inde...

dr_gn

Original Poster:

16,163 posts

184 months

Monday 23rd December 2019
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Got a bit bogged down with all my current projects being a pain in the arse. To get to this stage has taken wayyy longer than it should; the wing skinning didn’t work out, because there was no neat way of doing the underside of the upper wing and retaining the fuel tanks. Also disappointed to find no decals are included for the fin flashes, so required masking and painting. First time I got the stripes the wrong width, second time I got the read and blue mixed up. Sigh....



It’s going to one of those where the result doesn’t justify the effort, but there we go.