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3D Printing Cannons in Resin


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On 11/26/2023 at 9:54 PM, thibaultron said:

I "finished" the Spanish 12 pounder 1718 Pattern, with the scroll on the barrel. The direct translation is "The King's Wife has been violated", at least through Google Translate.

 

 

 

Actually, it translates as:  "thunderbolts of the (an) insulted king".

Seems Google mistook "fulmina" for "femina", the latter meaning "woman".

😉

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3 hours ago, Kauz said:

Actually, it translates as:  "thunderbolts of the (an) insulted king".

Seems Google mistook "fulmina" for "femina", the latter meaning "woman".

😉

Than

Thanks for the correction!

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16 hours ago, allanyed said:

I know very well the work that you have done and the willingness to share with the members is stupendous.   I think the fifteen shown above are more than anyone else has offered in any pattern, let alone just one pattern.   If others feel we need additional calibers/lengths, it would be great to see them provide them to the membership as you are doing.  The more the better.   You mentioned the differences in the Armstrong and Armstrong Frederick, members should know that you also changed the badge to George 3 on the AF pattern compared to George 2 on the Armstrong pattern as it should be.

Allan

I went htrough the Fredrick cannon specifications I found online, and determined that once a specific size cannon was drawn, say one length of 6 Pounder, the diameters of the various sections of the other 6 Pounders were all the same. The lengths of the sections (First Reinforce, Second Reinforce, etc.) were then changed to a fixed proportion of the barrel length. I am in the process of drawing the "missing" cannon lengths for the Fredricks. If anyone can verify the available sizes of the Armstrongs, I will fill those in also.

 

The diameters were also not directly proportional between say a 42 Pounder and a 12 Pounder, there were "Fudge Factors" for some of them. For example the specification for one diameter is listed as 36 units for all cannon sizes in the text, but then a chart is provided that gives  a different number of units for that value, depending on the Poundage of the cannon. For example the units for the 42 Pounder is 32 rather than 36, for that value.

 

I will be going through all the cannon sizes and checking the drawings against this spec, and getting them as close to this spec as reasonably possible.

 

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I finished redrawing the Armstong-Fredrick pattern cannons, using the specifications I found on the Web. They had pixilated drawings on the site and I used those to double check the results. The cannons now provide files for all the 3 Pounder to 42 Pounder cannons listed. There were additional sizes shown on the original drawing I used, so I've left them in this set. Over the next few days, I will generate the 3D files for all the cannons.  The measurement shown in the graphic labels are the barrel length, not the overall length.

 

Armstrong_FredricksPatternCanonsWithKGIIICyphers_148.thumb.jpg.a05795eb1d4a7ff11d32dc84ff2e92ca.jpg

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Here is a chart of the Fredrick Cannons that will be available: The Orange blocks are cannons listed in the 1760 list, the Blue are those added in 1764, The Red are cannons that were shown in the drawing I used. This chart is from the Web Site I found. I will make a similar chart for the Armstrongs listed in an earlier posting in this thread. The Armstrongs will be the same cannon designs, but with a touch hole, rather than a flash pan.

 

FredrickCannonSizes.jpg.8500cd39ce28b64ebeb56a7ef1cb4888.jpg

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I've finished redrawing the Armstrong and Armstrong-Fredricks cannons, basing them on the breach diameter and length specifications at the Web Site:

 

https://www.arc.id.au/ArmstrongPattern.html

 

I used my existing drawings and scaled them accordingly. This is the last round, and I drew all the sizes shown in the chart for the Fredricks, and the sizes of Armstrongs listed by Lieste in a previous post.

 

Below are the two charts, the graphics and STL files will follow in subsequent posts.

 

ArmstrongCannonSizes_001.thumb.jpg.9427978d523ef6bcdc4cf731db8670fa.jpg

 

FredrickCannonSizes_002.thumb.jpg.36478bb98366ce5baf58633b0125bb7f.jpg

 

 

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Armstrong Cannon Graphics - Part 1.

 

I added the barrel lengths to the graphics, and converted them the black and white, so the dimensions showed better.

 

3 Pounder 54

 

ArmstrongPattern3Pounder54.thumb.jpg.0a8aad7a96666c0a8efa75556b5c46ef.jpg

 

4 Pounder 60

 

ArmstrongPattern4Pounder60.thumb.jpg.d1d039b0b52dc9904b8535dedbe388e8.jpg

 

4 Pounder 72

 

ArmstrongPattern4Pounder72.thumb.jpg.bea47318e386c3828687388528ec155b.jpg

6 Pounder 72

 

ArmstrongPattern6Pounder72.thumb.jpg.a7c798cb3953313aaf1d6c30ec96d962.jpg

 

6 Pounder 78

 

ArmstrongPattern6Pounder78.thumb.jpg.81fd5f50ca888e01c39d0d0da15dbdf3.jpg

 

6 Pounder 84

 

ArmstrongPattern6Pounder84.thumb.jpg.97de2ca9c2c9971987cc3c609a74f8f1.jpg

 

6 Pounder 90

 

ArmstrongPattern6Pounder90.thumb.jpg.ab224e34b1688270ef9b728d0d22ea6a.jpg

 

6 Pounder 96

 

ArmstrongPattern6Pounder96.thumb.jpg.80062538934c9855a9bdd8d5532dd1ff.jpg

6 Pounder 102

 

ArmstrongPattern6Pounder102.thumb.jpg.d7d81e43bfe1e08d342cca8ce608f98a.jpg

9 Pounder 84

 

ArmstrongPattern9Pounder84.thumb.jpg.f9ffa2b6df5d11aa8ce61b107fc9c9fc.jpg

9 Pounder 90

 

ArmstrongPattern9Pounder90.thumb.jpg.86a194b116207936f3d475cb1d83e0c5.jpg

 

9 Pounder 102

 

ArmstrongPattern9Pounder102.thumb.jpg.a91192aa01bb4c8c8e53729a4f58e436.jpg

9 Pounder 108

 

ArmstrongPattern9Pounder108.thumb.jpg.ed2171c1f23b7a2efef950f3027501d1.jpg

12 Pounder 90

 

ArmstrongPattern12Pounder90.thumb.jpg.4983526127aada5d788d9f7f790ca4a4.jpg

 

12 Pounder 102

 

ArmstrongPattern12Pounder102.thumb.jpg.8e1c30ef3bcb2fcf68dfa79263b8cd97.jpg

12 Pounder 108

 

ArmstrongPattern12Pounder108.thumb.jpg.262de00f7f0061715248fdbb0db225c7.jpg

 

 

 

 

 

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Armstrong Cannon Graphics - Part 1.

 

18 Pounder 96

 

ArmstrongPattern18Pounder96.thumb.jpg.2d500408f0d9611777110ba24e17f1a1.jpg

18 Pounder 108

 

ArmstrongPattern18Pounder108.thumb.jpg.abb5918ea0c1202707fff7f69e50257a.jpg

 

24 Pounder 108

 

ArmstrongPattern24Pounder108.thumb.jpg.b2a5060149a4eb84e165c2af6156d65d.jpg

24 Pounder 114

 

ArmstrongPattern24Pounder114.thumb.jpg.1bb37ba600b1643522250278bea684be.jpg

32 Pounder 114

 

ArmstrongPattern32Pounder114.thumb.jpg.48b3a0cdc54544b1abdb14cd42733eac.jpg

32 Pounder 120

 

ArmstrongPattern32Pounder120.thumb.jpg.429cbde6f642110148227220cb88841d.jpg

42 Pounder 114

 

ArmstrongPattern42Pounder114.thumb.jpg.576c700b0f160dab37743554445c8301.jpg

42 Pounder 120

 

ArmstrongPattern42Pounder120.thumb.jpg.7728a9ff15708a95c1ebf2a7513708a0.jpg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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The proportion at the sond of the bore (and to the surface at the bore end)

42 pdr 32/32
32pdr 34/32
24pdr 36/32
18pdr 38/32
12pdr 40/32
9pdr 42/32
All smaller 44/32

The reinforce is then increasing in the same pattern from 27/32 in 1/32 increments, and the 'neck' at the muzzle astragal from 18/32 in 1/32 increments.

The instructions for proportions are given for a 24pdr, and you should replace the proportion of 36/32, 29/32 and 20/32 for those three landmarks with the scale suitable to the calibre.

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32 minutes ago, Lieste said:

The instructions for proportions are given for a 24pdr, and you should replace the proportion of 36/32, 29/32 and 20/32 for those three landmarks with the scale suitable to the calibre.

Hi Lieste

Can you share where these instructions can be found?  Are they based on contemporary sources?

32 minutes ago, Lieste said:

The proportion at the sond of the bore (and to the surface at the bore end)

I may be the only one not understanding what you are implying, but if you can you please post drawings of each (as Ron has done for all of us) to show what you mean, it would be appreciated. 

 

Many thanks

Allan 

PLEASE take 30 SECONDS and sign up for the epic Nelson/Trafalgar project if you would like to see it made into a TV series.   Click on http://trafalgar.tv   There is no cost other than the 30 seconds of your time.  THANK YOU

 

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The thickness of the metal in the breech is taken from the sond of the bore to the rear of the breech ring (The breechface and cascable are additional). At right angles to the bore the thickness of metal is the 'breech' proportion at the position of the sond. The 'base height' of the metal at the rear of the breech ring is enlarged from this land-mark by the line of metal of the reinforce, and a shorter gun 'comes out' slightly taller. The actual surface of the metal takes an angle after allowing for the 'step' of the first reinforce, as it is the height of the 'surface' under the second reinforce moulding. I have the general principle in memory, but not the details, which I have in a spreadsheet which will generate the elevation of any arbitrary Armstrong Frederick Pattern Gun (and with a change to the ventfield the Armstrong ones (in Iron).. the rules and proportions are different for gun metal and I haven't teased the necessary adjustments to fair lines by calculation rather than construction and inspection... There are some awkward linked calculations for the A-F pattern, especially in the mouldings, the muzzle swell and the cascable and button to get clean tangent joins between the two portions, that can be found trivially within a CAD program such as FreeCAD using a sketch with constraints for each construction line and segment of the surface.

This is the same definition of 'thickness at the breech' as defined in e.g the Manson pattern 1786 naval guns, though of course the details of proportion and moulding aren't generally the same.

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Hi Lieste

Sorry to repeat, but can you share where these instructions can be found and post drawings to help understand.  For example, I cannot find what a sond is in relation to a cannon barrel anywhere on the internet, so far, or how Bavarian guns that you mention relate to AFs.

 

Many thanks for your help and input.

 

Allan 

PLEASE take 30 SECONDS and sign up for the epic Nelson/Trafalgar project if you would like to see it made into a TV series.   Click on http://trafalgar.tv   There is no cost other than the 30 seconds of your time.  THANK YOU

 

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The bore is the hollow, the sond of the bore is the deepest part of that hollow (a flat covering 11/12th of the bore radius in A/AF pattern, or the middle of a shallow ellipsoid in Blomefield and later pattern guns - according to Boxer at least - Some, such as carronades would have a deeper curve - in this case a hemisphere occupying half the typical nominal chamber length, with 'zero' length behind the sond (aside from the cascabel and breech face)).

Manson pattern guns are well documented - they are the French 1786 pattern naval iron guns - and while they have no direct commonality to any British pattern... however they do share a general definition of *how* the thickness at the breech, and of the wall at the sond are defined (they are equal and based on a specified proportion of the bore, which can be modified by calibre).

 

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The Armstrong-Fredricks Cannon Graphics - Part 1

 

3 Pounder 54

 

ArmstrongFredrickPattern3Pounder54.thumb.jpg.8b3fc42738432ba87e9a8d5c2d52d923.jpg

4 Pounder 66

 

ArmstrongFredrickPattern4Pounder66.thumb.jpg.750dad84181edf0009cce2ef23a65dbb.jpg

4 Pounder - 72

 

 

ArmstrongFredrickPattern4Pounder72.thumb.jpg.d0190709670b8f24e3ca1552e23d6b99.jpg

 

6 Pounder 72

 

ArmstrongFredrickPattern6Pounder72.thumb.jpg.f0e9efdad57354edb58c9e9c6eb9ab3f.jpg

6 Pounder 78

 

ArmstrongFredrickPattern6Pounder78.thumb.jpg.5784aa8493f68bbea0630f37bfc68da0.jpg

6 Pounder 84

 

ArmstrongFredrickPattern6Pounder84.thumb.jpg.8da0d3cf6d3d60c5fbd7eab85c1a6ab0.jpg

6 pounder 90

 

ArmstrongFredrickPattern6Pounder90.thumb.jpg.f78cb138d89e66769f410d91cd5a95cb.jpg

8 Pounder 96

 

ArmstrongFredrickPattern6Pounder96.thumb.jpg.e07780dc974cbe0791a39c44f9f1b7ef.jpg

6 pounder 102

 

ArmstrongFredrickPattern6Pounder102.thumb.jpg.d4d274a192fbec97a7ad4a20ce0df9a7.jpg

6 Pounder 108

 

ArmstrongFredrickPattern6Pounder108.thumb.jpg.906fa5169d7bd0788772713c97f61df6.jpg

9 Pounder 84

 

ArmstrongFredrickPattern9Pounder84.thumb.jpg.5c1fefe520b40e1e22a04536e15ae1d8.jpg

9 Pounder 90

 

ArmstrongFredrickPattern9Pounder90.thumb.jpg.8ce8bc388d2d2bdf94b7d6b4942bcda5.jpg

9 Pounder 96

 

ArmstrongFredrickPattern9Pounder96.thumb.jpg.222787167882779b9f6de12d8e5146b6.jpg

9 Pounder 102

 

ArmstrongFredrickPattern9Pounder102.thumb.jpg.fdb0c7bf74238082fc16e8fdf0ebc2b5.jpg

9 Pounder 108

 

ArmstrongFredrickPattern9Pounder108.thumb.jpg.b5335a50418fc23e7ccdd8113d5b3ecc.jpg

12 Pounder 90

 

ArmstrongFredrickPattern12Pounder90.thumb.jpg.c7b224ccdb8738fdf4b822c01ab59157.jpg

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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The Armstrong-Fredricks Cannon Graphics - Part 2

 

 

12 Pounder 102

 

ArmstrongFredrickPattern12Pounder102.thumb.jpg.9ffb44158a9755c6fcf10d5f9cb2ec56.jpg

12 Pounder 108

 

ArmstrongFredrickPattern12Pounder108.thumb.jpg.2e55dde920dcaece1c26ad3218f49804.jpg

18 Pounder 108

 

ArmstrongFredrickPattern24Pounder108.thumb.jpg.b222dfa751afc68212569ae5c87a436c.jpg

ArmstrongFredrickPattern24Pounder108.thumb.jpg.b222dfa751afc68212569ae5c87a436c.jpg

24 pounder 108

 

ArmstrongFredrickPattern24Pounder108.thumb.jpg.b222dfa751afc68212569ae5c87a436c.jpg

 

24 Pounder 114

 

ArmstrongFredrickPattern24Pounder114.thumb.jpg.afdbee2d7ae43ad283177e010729df59.jpg

32 Pounder 114

 

ArmstrongFredrickPattern32Pounder114.thumb.jpg.467c34b091ca8dbbe7d1e7ba7fcccd06.jpg

32 Pounder 120

 

ArmstrongFredrickPattern32Pounder120.thumb.jpg.762dac7f784ee4ca33709f094aa502fb.jpg

 

42 Pounder 114

 

ArmstrongFredrickPattern42Pounder114.thumb.jpg.b2297c541b9a442e39b67bb96bdd8cf5.jpg

42 Pounder 120

 

ArmstrongFredrickPattern42Pounder120.thumb.jpg.7cb310951df2e4fb71fe094a4f5f698c.jpg

 

Armstrong Fredrick Pattern 18 Pounder 108.jpg

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On 1/26/2024 at 4:42 PM, Lieste said:

The bore is the hollow, the sond of the bore is the deepest part of that hollow (a flat covering 11/12th of the bore radius in A/AF pattern, or the middle of a shallow ellipsoid in Blomefield and later pattern guns - according to Boxer at least - Some, such as carronades would have a deeper curve - in this case a hemisphere occupying half the typical nominal chamber length, with 'zero' length behind the sond (aside from the cascabel and breech face)).

Drawings please.  It is far easier for some of us to understand the designs you are describing with drawings like the fantastic drawings that Ron has posted rather than using words only. Thanks again for your input. 😀

Allan

 

Edited by allanyed

PLEASE take 30 SECONDS and sign up for the epic Nelson/Trafalgar project if you would like to see it made into a TV series.   Click on http://trafalgar.tv   There is no cost other than the 30 seconds of your time.  THANK YOU

 

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Spanish Cannons 1718 Pattern Graphics.

 

I did not include the barrel length, as I only had drawings for one of each size.

 

The Royal scroll and the cannon name scroll are on the barrel, but I will admit that the cannon name is the same for each STL, rather than individual names, as on the real cannon. I could only find one good photograph or drawing of this feature to trace. Yes the larger size cannons did not have the box structure at the trunions. No, I have no idea why.

 

The handles are my best attempt at a Sea Monster motif.

 

Spanish1718PatternHandle.thumb.jpg.43de73170eca1ce08bcdc6830a09c2f3.jpg

 

5 Pounder

 

Spanish5PounderCannon1718Patternnew.thumb.jpg.acc3e0e7d766e30f811c9a3c35d5313c.jpg

 

9 Pounder

 

Spanish9PounderCannon1718Patternnew.thumb.jpg.ff9ce36df0f5c4e038a751e18cbba478.jpg

 

12 Pounder

 

Spanish12PounderCannon1718Patternnew.thumb.jpg.e8a0bbaf26c679aaf2869c450c46c948.jpg

16 Pounder

 

Spanish16PounderCannon1718Patternnew.thumb.jpg.6994f9a3faab6bcac86a3cdd3c0b6a78.jpg

 

24 Pounder

 

Spanish24PounderCannon1718Pattern_002.thumb.jpg.568d14d7273ecf2459eb33724ded4879.jpg

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I will be posting the Blomefield Cannons later today, or tomorrow.

 

I have to create the Brown Pattern Cannon graphics, so they will be posted later this week, the STL files are finished.

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OK, the NRG class today starts an hour later than I thought, so here is the Blomefield info.

 

These are the only sizes I had drawings for.

 

Blomefield Pattern about 1787 Graphics

 

6 Pounder 84

 

BlomefieldPattern6Pounder84.thumb.jpg.9c8dfdd7d2f7e627856647087cec355d.jpg

6 Pounder 90

 

BlomefieldPattern6Pounder102.thumb.jpg.82faa54b97dd1b5d90dc89ba3005242c.jpg

6 Pounder 102

 

BlomefieldPattern6Pounder102.thumb.jpg.82faa54b97dd1b5d90dc89ba3005242c.jpg

9 Pounder 90

 

BlomefieldPattern9Pounder90.thumb.jpg.f113e6c51ec35b01a7016b47d0ab12d2.jpg

9 Pounder 102

 

BlomefieldPattern9Pounder102.thumb.jpg.bbb2adacce6fa9f919a8e69cd219b1fa.jpg

9 Pounder 108

 

BlomefieldPattern9Pounder108.thumb.jpg.2bb0b0dbcf9bfeb1105c1c977db07e68.jpg

12 Pounder 90

 

 

BlomefieldPattern12Pounder90.thumb.jpg.d3cac5d597bceb7517d1c4c6ff765c4c.jpg

12 Pounder 102

 

BlomefieldPattern12Pounder102.thumb.jpg.ec115fe2c5f44052817fc9f9655682be.jpg

12 Pounder 108

 

BlomefieldPattern12Pounder108.thumb.jpg.6261947174127c036d0ac4a462366039.jpg

18 Pounder 108

 

BlomefieldPattern18Pounder108.thumb.jpg.9a5df5737b2e831283706cc65307d748.jpg

18 Ponder 114

 

BlomefieldPattern18Pounder114.thumb.jpg.731b5f357ace2e84f39db8881a6220e4.jpg

24 Pounder 108

 

BlomefieldPattern24Pounder108.thumb.jpg.0a4aa4fa5114a1a69fade9ed780346e6.jpg

24 Pounder 114

 

BlomefieldPattern24Pounder114.thumb.jpg.65af7c8751a9c6e4e705a2bed3a99fd1.jpg

32 Pounder 114

 

BlomefieldPattern32Pounder114.thumb.jpg.caa4f048b9d86782565405249d7777a2.jpg

Blomefield Pattern 6 Pounder 90.jpg

Edited by thibaultron
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  • 2 weeks later...

Hi Srenner,

Is this for your Greyhound (20) 1720 build?  

Allan

 

 

PLEASE take 30 SECONDS and sign up for the epic Nelson/Trafalgar project if you would like to see it made into a TV series.   Click on http://trafalgar.tv   There is no cost other than the 30 seconds of your time.  THANK YOU

 

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Armstrong was rolled out from 1724 - Borgard patterns would have been current in 1716, and continued for a long time after, but the presence of an Armstrong set on a 'later' vessel of the class isn't impossible. There might also have been 'pre-pattern' contract guns still in service, with each built to a contract length and weight, but with the choice of form and moulding left to the individual gunsmith.

There is a table of dimension and diagram on P92 of "The Arming and Fitting of English Ships of War, 1600-1815", from notes taken from a Library book long since returned. I have (somewhere) the table of dimensions and some brief notes on the landmarks, but I didn't have the ability to copy the diagram at the time - from memory they look superficially like an Armstrong, but a bit more noticeably fatter going from second reinforce to first towards the breech, and the button appears somewhat smaller and without the astragal of the button.

From a few feet away Armstrong patterns might be indistinguishable at smaller scales, though there is a difference in the proportion of the first reinforce which would be noticeable with one of each next to each other of the same length and calibre.

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