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Spitfire cannons

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Martian02/04/2018 18:59:59
2580 forum posts
1170 photos

Hi any of you 3d wizards created Spitfire cannons

Tony Bennett02/04/2018 19:33:29
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5082 forum posts
129 photos

not yet.

done browning machine gun barrels though.

cheeky

Tony B

Edited By Tony Bennett on 02/04/2018 19:37:13

Martian02/04/2018 19:46:41
2580 forum posts
1170 photos

Yes I've seen them Tony you are a genius i see you've moved on to a Prusa i3 ,even better results, fancy making a pair of spit cannons not free of course , I just don't like the idea of wood

Martian02/04/2018 19:47:36
2580 forum posts
1170 photos

As soon as I can afford it I will have to get an anet8

Tony Bennett02/04/2018 20:06:02
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5082 forum posts
129 photos

i will take a look tomorrow, what scale.

Tony B

Martian02/04/2018 20:55:08
2580 forum posts
1170 photos

Tony that would be brilliant its the warbirds replica spitfire approx 1/8th scale.

thank you

Graham R18/06/2020 23:00:02
372 forum posts
28 photos

I know that this is an old thread. Did anything come it as the wr spitfire is on my building board.

Graham R18/06/2020 23:01:00
372 forum posts
28 photos

I know that this is an old thread. Did anything come it as the wr spitfire is on my building board.

Richard Clark 219/06/2020 05:07:00
424 forum posts
Posted by Graham R on 18/06/2020 23:01:00:

I know that this is an old thread. Did anything come it as the wr spitfire is on my building board.

You're another one. My WR Spitfire came about 10 days ago and is also on the building board

As for 3D printing in most cases it's more of a faff than it's worth. It's just a case of "I've bought the latest technical gimmick, now what on earth can I do with it?"

EG: I also built the slightly larger TopFlite Spitfire Mk9. I made an excellent pair of cannons from hardwood dowel, which I hand tapered to the correct shape, drilled a hole in the rear end to take 16 gauge piano wire covered with empty ball pen refill tube to give flexibility, fit the brass tubes I put in the wing, and also be removable, in less than an hour excluding painting (grey, silver, and black).

With a 3D printer you could only do the actual 'barrel' part and it would take you hours to just set it up, let alone do it.

It's the same with 'computer aided design' (which, incidentally, was invented many years ago by the US computer corporation I work for in co-operation with Dassault Aviation of France and in which I had a part). It's excellent for massive projects like aircraft and ok for smaller ones like cars.

But for model aircraft it's a total waste of time. I can produce complete and accurate working drawing of any model plane I want at any size I want in about a day, maybe two days for something complicated like a Lancaster, using only a ruler, a set square, french curves compasses, dividers and a pencil.

leccyflyer19/06/2020 06:59:04
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1584 forum posts
332 photos
Posted by Graham R on 18/06/2020 23:00:02:

I know that this is an old thread. Did anything come it as the wr spitfire is on my building board.

There are a couple of sets of Spitfire cannons on Thingiverse - including one for the Durafly Mk24, which could be scaled easily for the correct scale. They might also need slicing to remove the wing section part and just use the barrels. Not sure how accurate these are, but will give them a dose of looking at when the time comes.

Durafly Spitfire Mk 24 cannons

There is also a much more accurate, complete Hispano cannon assembly on Grabcad, which would probably be overkill in a flying model, but the cannon shrouds would be useful.. I've downloaded them too..

Hispano Cannon

Martian19/06/2020 11:14:18
2580 forum posts
1170 photos

I made my own out of wood at the time but have since bought the 3dlab Spitfire and if I wanted I can print them of in about an hour .

Martian19/06/2020 11:19:42
2580 forum posts
1170 photos

I will print them anyway i could do with a diversion and post a pic then if anyone wants some I can print some more 😎

Ron Gray19/06/2020 13:08:48
2328 forum posts
965 photos

That's the great thing about 3D printing, it does it whilst you get on with other things and in a lot of cases no need to design stuff as it's freely available.

Simon Chaddock19/06/2020 13:20:00
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5777 forum posts
3055 photos

Richard Clark 2

You may be able to draw a scale Browning gun barrel but could you then make 8 of them as Tony B did in a reasonable length of time?

3D printing does have its strengths, particularly where multiple copies are required.

Martian19/06/2020 13:58:12
2580 forum posts
1170 photos

Absolutely agree Simon

leccyflyer19/06/2020 14:08:45
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1584 forum posts
332 photos
Posted by Simon Chaddock on 19/06/2020 13:20:00:

Richard Clark 2

You may be able to draw a scale Browning gun barrel but could you then make 8 of them as Tony B did in a reasonable length of time?

3D printing does have its strengths, particularly where multiple copies are required.

That's an excellent point.

At long last I have finally found a file for the RP3 rocket projectile, having been searching for years. My wee Beaufighter needs 8 of these and my 3D printer will be printing them, once I can figure out how to convert the file format into something that I can work with, to get the scaling right.

Richard Clark 219/06/2020 14:16:20
424 forum posts
Posted by Simon Chaddock on 19/06/2020 13:20:00:

Richard Clark 2

You may be able to draw a scale Browning gun barrel but could you then make 8 of them as Tony B did in a reasonable length of time?

3D printing does have its strengths, particularly where multiple copies are required.

Of course 3D printing has its strengths. But only if you use it enough to (1) justify the purchase price of the printer (2) need enough of whatever it is to justify the setup time if you can't near instantly download a free or very low cost file.

As regarding 'hobby' computer aided design and manufacture in general, over the years on a US RC forum I've seen literally dozens of people starting to design some fancy model using a compurer system. 90% of them get so hung up on the computer stuff that the design never gets finished and the plane never gets built.

I'm not 'anti-tech'. I've spent my whole career at the leading edge of it, fairly successfully. But for some things it is simply not needed.

Bob Cotsford19/06/2020 14:24:49
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8758 forum posts
489 photos

Since when does 'need' come into any aspect of a hobby? I'm sure it takes as much skill and is just as involving to produce a 3D printed item as it would be to make one by hand. It's just a different skillset, that's all.

Surprising how many of us were involved in high tech of one sort or another during our working lives. Not so surprising that we should maintain an interest in tech in our leisure activities.

leccyflyer19/06/2020 14:32:37
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1584 forum posts
332 photos

People are now getting decent results with fully 3D printed aeroplanes, but that isn't my interest in using the 3D printer. For me it's all about the scale parts and it's a replacement for making wooden plugs and vac-forming those detail parts, or making them directly from a variety of materials.

This job of making cannon shrouds for a scale Spitfire looks like the perfect application. I printed a gunsight for my P-51 this morning an am printing a 3D instrument panel for it right now.

Trevor Crook19/06/2020 14:55:32
1004 forum posts
71 photos

Not sure what size your Spitfire is, but it appears these are in stock in the uk:

https://hobbyking.com/en_us/avios-spitfire-plastic-scale-detailed-parts-mto.html

This one is 1450mm span. I've got one, and have attached the cannon and radio aerials using rare earth magnets glued to the part and its location on the airframe. They hold on firmly, but "unclip" easily for transport and storage, and also in an "incident", without damaging the airframe.

They are cheap enough, and the other parts could be used if the size is right.

On my Typhoon of the same size, sealant nozzles were used, but they are a slightly different shape on that aircraft.

dscn1038.jpg

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