Patrick Matthews
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Patrick Matthews got a reaction from jchbeiner in Sharing
One of the highest achievements of research is the publication of your work.
I've often been too lazy to share designs-- it seems to take as much work to put one's research into shareable format as it does to build a physical model! But I'm trying to rectify that. I often use CAD to help work out designs and to support the building activity, but I'm also finding it just as rewarding to simply make a CAD model and share that... and the CAD model is much easier to keep the dust off of.
I'm posting my CAD models for free download at GrabCAD. Other sites are available, but this works for me:
https://grabcad.com/patrick.matthews-1
You can go into each model posting to find additional materials, such as photos, documents, and original drawings, as well as the CAD model itself. The site has a 3D viewer that allows you spin the model around for preview, nice.
So far, I have posted:
- 1909 San Francisco fireboat
- 1945 ATSF RR tugboat
- 1908 USLSS lifeboat
And now I'm going back and reassembling a mess of a CAD model for my interpretation of "Pilar".
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Patrick Matthews got a reaction from lmagna in Sharing
One of the highest achievements of research is the publication of your work.
I've often been too lazy to share designs-- it seems to take as much work to put one's research into shareable format as it does to build a physical model! But I'm trying to rectify that. I often use CAD to help work out designs and to support the building activity, but I'm also finding it just as rewarding to simply make a CAD model and share that... and the CAD model is much easier to keep the dust off of.
I'm posting my CAD models for free download at GrabCAD. Other sites are available, but this works for me:
https://grabcad.com/patrick.matthews-1
You can go into each model posting to find additional materials, such as photos, documents, and original drawings, as well as the CAD model itself. The site has a 3D viewer that allows you spin the model around for preview, nice.
So far, I have posted:
- 1909 San Francisco fireboat
- 1945 ATSF RR tugboat
- 1908 USLSS lifeboat
And now I'm going back and reassembling a mess of a CAD model for my interpretation of "Pilar".
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Patrick Matthews got a reaction from thibaultron in USLSS 36'Lifeboat
Continuing to add details, including the material appearances which allows for some nice renderings. Much more to do! For example, the couple score of copper air chambers for flotation.
By the way, that's not a steering wheel on the aft bulkhead- it operates the reversing mechanism, which normally would just be a lever if you were standing next to the engine. The single crank is for starting the engine, while the T-handle crank is the primary steering tool.
The galvanized air tank below the aft bulkhead gets compressed gas directly from the engine cylinder, and is used to operate the whistle seen on that aft bulkhead. The main fuel tank is the copper object below the forward bulkhead.
Gunmetal plates riveted through and through the keel members at both ends are used for hauling the boat up the ways.
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Patrick Matthews got a reaction from Jack12477 in USLSS 36'Lifeboat
Continuing to add details, including the material appearances which allows for some nice renderings. Much more to do! For example, the couple score of copper air chambers for flotation.
By the way, that's not a steering wheel on the aft bulkhead- it operates the reversing mechanism, which normally would just be a lever if you were standing next to the engine. The single crank is for starting the engine, while the T-handle crank is the primary steering tool.
The galvanized air tank below the aft bulkhead gets compressed gas directly from the engine cylinder, and is used to operate the whistle seen on that aft bulkhead. The main fuel tank is the copper object below the forward bulkhead.
Gunmetal plates riveted through and through the keel members at both ends are used for hauling the boat up the ways.
-
Patrick Matthews got a reaction from Egilman in USLSS 36'Lifeboat
Continuing to add details, including the material appearances which allows for some nice renderings. Much more to do! For example, the couple score of copper air chambers for flotation.
By the way, that's not a steering wheel on the aft bulkhead- it operates the reversing mechanism, which normally would just be a lever if you were standing next to the engine. The single crank is for starting the engine, while the T-handle crank is the primary steering tool.
The galvanized air tank below the aft bulkhead gets compressed gas directly from the engine cylinder, and is used to operate the whistle seen on that aft bulkhead. The main fuel tank is the copper object below the forward bulkhead.
Gunmetal plates riveted through and through the keel members at both ends are used for hauling the boat up the ways.
-
Patrick Matthews got a reaction from berhard in USLSS 36'Lifeboat
Continuing to add details, including the material appearances which allows for some nice renderings. Much more to do! For example, the couple score of copper air chambers for flotation.
By the way, that's not a steering wheel on the aft bulkhead- it operates the reversing mechanism, which normally would just be a lever if you were standing next to the engine. The single crank is for starting the engine, while the T-handle crank is the primary steering tool.
The galvanized air tank below the aft bulkhead gets compressed gas directly from the engine cylinder, and is used to operate the whistle seen on that aft bulkhead. The main fuel tank is the copper object below the forward bulkhead.
Gunmetal plates riveted through and through the keel members at both ends are used for hauling the boat up the ways.
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Patrick Matthews got a reaction from thibaultron in USLSS 36'Lifeboat
Work in process, from original plans. 36' lifeboat as built for the USLSS by Elco in the early 1900s.
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Patrick Matthews got a reaction from thibaultron in USLSS 36'Lifeboat
Mostly all wood of course, and lots of varnished mahogany, including the dual-diagonal planked hull, just like later and more famous Elcos... it would be pretty.
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Patrick Matthews got a reaction from Paul Le Wol in USLSS 36'Lifeboat
Mostly all wood of course, and lots of varnished mahogany, including the dual-diagonal planked hull, just like later and more famous Elcos... it would be pretty.
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Patrick Matthews got a reaction from aechmea in USLSS 36'Lifeboat
Work in process, from original plans. 36' lifeboat as built for the USLSS by Elco in the early 1900s.
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Patrick Matthews got a reaction from CDR_Ret in Exploring FreeCAD for ship modeling
In Fusion 360 (and probably other packages), create a single path for the centerline of your rope. For multiple lines in a block, do just one loop and copy the solid segment rather than doing the entire length.
But with your path, create a single sketch with all the strands. Overlap them a bit and cut away the interior overlaps.
Then sweep that sketch along the path, adding twist. In F360, I have to specify the entire twist amount for the entire length, might be a few thousand degrees.
Here's a printable wire spool for my 1:8 DUKW winch.
One loop of wire:
The printed wire reel:
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Patrick Matthews got a reaction from mtaylor in USLSS 36'Lifeboat
Mostly all wood of course, and lots of varnished mahogany, including the dual-diagonal planked hull, just like later and more famous Elcos... it would be pretty.
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Patrick Matthews got a reaction from mtaylor in USLSS 36'Lifeboat
Work in process, from original plans. 36' lifeboat as built for the USLSS by Elco in the early 1900s.
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Patrick Matthews got a reaction from lmagna in 3d printing process
Got something long that won't fit in your printer? You may be able to break it into segments, with strategic glue joints. I made a 20 inch long railing section this way, with half-lap joints in the rails.
Joints were made with CA, but I still had some tiny gaps. These were filled with printer resin and zapped with a UV flashlight. Filed smooth, the joints are invisible.
Long continuous railing:
Lining up the segments:
Half laps:
You can use resin to fill gaps. Here I'm filling seams in styrene overlays. Use a UV flashlight and UV safety glasses:
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Patrick Matthews got a reaction from thibaultron in Constitution's Guns?
Gorgeous! Yes, those are her "wrong" 1930s repro guns.
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Patrick Matthews got a reaction from Scallywag in Constitution's Guns?
Thx, I think.
p.83: "1. 24-pdr English long gun"
It's already been established that contrary to an earlier opinion, she DIDN'T (for the most part) carry English guns.
Probably doesn't matter much, they all looked about the same!
Except for the mistaken English markings cast on the 1930 repro guns...
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Patrick Matthews got a reaction from thibaultron in Constitution's Guns?
Brenckle's post in 2015 suggests that:
- The drawing of the "old" long gun barrel may well represent Constitution's 24 pdrs of 1812;
- We have no idea if any of these exist today ("It is hoped that some of this information will help us identify some existing guns that might conform to types carried on Constitution during the War of 1812 and the following decades. If you know of any early 32-pounder carronades or 24-pounder long guns that match these measurements, we’d love to hear from you!")
Desy & Monea (2015, https://ussconstitutionmuseum.org/2015/08/25/modern-armament/) also say that the reproduction guns present today are not correct, but without mentioning what IS correct.
And no one seems to have specific carriage drawings, other than the several generic carriages of the period, such as depicted on p.2 of the pamphlet: https://www.navyhistory.org/the-constitution-gun-deck/
Will be interesting to see if Tucker sheds any light on all this.
For a model of Constitution's 1812 24 pounder, I guess I'd go with the "old" barrel drawing and that generic carriage drawing.
Oh, and use the words "might be" in any description of said model!
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Patrick Matthews got a reaction from thibaultron in Constitution's Guns?
Can anyone point me towards accepted info on Constitution's 24 pounders?
I've read that the 1906 and 1930 restorations both resulted in the "wrong" guns being recreated for her, and the most (all?) of the current 24 pounders are from the 1930 restoration.
But do we know what the "right" guns may have been?
I'm hoping to find dimensional info to help in constructing a larger scale gun model. I searched here, but the number of hits are overwhelming while not shining light on this question...
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Patrick Matthews got a reaction from thibaultron in 3d printing process
Got something long that won't fit in your printer? You may be able to break it into segments, with strategic glue joints. I made a 20 inch long railing section this way, with half-lap joints in the rails.
Joints were made with CA, but I still had some tiny gaps. These were filled with printer resin and zapped with a UV flashlight. Filed smooth, the joints are invisible.
Long continuous railing:
Lining up the segments:
Half laps:
You can use resin to fill gaps. Here I'm filling seams in styrene overlays. Use a UV flashlight and UV safety glasses:
-
Patrick Matthews got a reaction from mtaylor in 3d printing process
Got something long that won't fit in your printer? You may be able to break it into segments, with strategic glue joints. I made a 20 inch long railing section this way, with half-lap joints in the rails.
Joints were made with CA, but I still had some tiny gaps. These were filled with printer resin and zapped with a UV flashlight. Filed smooth, the joints are invisible.
Long continuous railing:
Lining up the segments:
Half laps:
You can use resin to fill gaps. Here I'm filling seams in styrene overlays. Use a UV flashlight and UV safety glasses:
-
Patrick Matthews got a reaction from Nirvana in 3d printing process
Got something long that won't fit in your printer? You may be able to break it into segments, with strategic glue joints. I made a 20 inch long railing section this way, with half-lap joints in the rails.
Joints were made with CA, but I still had some tiny gaps. These were filled with printer resin and zapped with a UV flashlight. Filed smooth, the joints are invisible.
Long continuous railing:
Lining up the segments:
Half laps:
You can use resin to fill gaps. Here I'm filling seams in styrene overlays. Use a UV flashlight and UV safety glasses:
-
Patrick Matthews got a reaction from mtaylor in Constitution's Guns?
Gorgeous! Yes, those are her "wrong" 1930s repro guns.
-
Patrick Matthews got a reaction from thibaultron in Constitution's Guns?
Thx, I think.
p.83: "1. 24-pdr English long gun"
It's already been established that contrary to an earlier opinion, she DIDN'T (for the most part) carry English guns.
Probably doesn't matter much, they all looked about the same!
Except for the mistaken English markings cast on the 1930 repro guns...
-
Patrick Matthews got a reaction from mtaylor in Constitution's Guns?
Thx, I think.
p.83: "1. 24-pdr English long gun"
It's already been established that contrary to an earlier opinion, she DIDN'T (for the most part) carry English guns.
Probably doesn't matter much, they all looked about the same!
Except for the mistaken English markings cast on the 1930 repro guns...
-
Patrick Matthews got a reaction from michaelpsutton2 in Constitution's Guns?
Brenckle's post in 2015 suggests that:
- The drawing of the "old" long gun barrel may well represent Constitution's 24 pdrs of 1812;
- We have no idea if any of these exist today ("It is hoped that some of this information will help us identify some existing guns that might conform to types carried on Constitution during the War of 1812 and the following decades. If you know of any early 32-pounder carronades or 24-pounder long guns that match these measurements, we’d love to hear from you!")
Desy & Monea (2015, https://ussconstitutionmuseum.org/2015/08/25/modern-armament/) also say that the reproduction guns present today are not correct, but without mentioning what IS correct.
And no one seems to have specific carriage drawings, other than the several generic carriages of the period, such as depicted on p.2 of the pamphlet: https://www.navyhistory.org/the-constitution-gun-deck/
Will be interesting to see if Tucker sheds any light on all this.
For a model of Constitution's 1812 24 pounder, I guess I'd go with the "old" barrel drawing and that generic carriage drawing.
Oh, and use the words "might be" in any description of said model!
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