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Tanker T2-SE-A2, USS Pamanset (AO-85) Escambia Class | Print 3D & Scratch | 1/200


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Not being satisfied with my second version of the platform, I took out of my big stock my best balsa wood, what better than wood to represent ... wood.

 

I kept the some printed material.

 

I didn't put a hard background ont he balsa, the goal being precisely to have the texture, I traced the slats with a scalpel. Then I painted in black with an aerial to load the grooves, and I applied the 20B always with an aerial in a flat way so as not to cover the black to give contrast.

 

That's better. 😅

 

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Tonight I started the drawing of the steam windlass. I'll simplify it of course, although it's always tempting to overdo it... 

 

Luckily I have good pictures, but only pictures, no plans. So you have to make do with it, but I know this kind of equipment well from having maintained or repaired it. It necessarily helps, because the principle remains the same. The design of this kind of machine hasn't evolved much. The engine can be steam, electric (for the small ones), or most often nowadays hydraulic, on a big ship like a super tanker VLCC or ULCC, it's monstrous in size ...

 

Photo from the net.  340,000 tons ULCC (Ultra Large Crude carrier) "Coastal Corpus Christi" tanker, mouth of the Amazon in 1981.

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Luckily I found a free 3D lifter (the chain is embedded in this crown), which saves me time, because it's long to draw, the shapes are complex, but not impossible to achieve at my low level by taking the necessary time.

 

Thanks to Alexandros Vassilantonakis.
https://grabcad.com/library/anchor-winch-2

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You can see the construction axes, representing the 3 shafts.

 

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The different elements:

 

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A few examples of anchorages that go into a spin, especially on an aircraft carrier.

 

Many masters no longer drop anchor of large vessels with brakes as in these videos because there have been too many accidents or incidents. You go down with the engine on, it's safer. Except in an emergency, of course, or in specific anchorages.

 

 

 

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I've almost finished the windlass, not sure if it works mechanically, not enough information about it. They'll say it's a nice movie set windlass... But I can't be far from reality. In any case it will be enough to be credible.

 

It's a bit big, when it's totally finished I'll scale it down a few % and I'll move it back, because I need enough room for the chain stoppers. I still have the steam hoses to draw and the gear guards to protect the gears. 

 

The stopper is a safety device that is placed between the hawser and the windlass. It prevents the chain from spinning at anchor in case the windlass brake releases or slips, it often happens in strong winds and it pulls hard, the tension force on the chain can then exceed the capacity of the brake. 

 

A small pennant is usually stuck on the end of a piece of broomstick across the chain at the sprocket, the pennant is visible from the bridge, and the officer or deckhand on watch at anchor can look through the binoculars or the naked eye to see if the pennant is visible, if it is not, the chain will just pull itself loose. 

 

The stopper is used at sea to secure the chain anchor, in addition to the traditional chain or wire rope grips. 

 

Some personal pictures showing a very big bulk carrier at anchorage with us in Gijón, Spain at the end of Nov 2003 during abad weather, as we know how to do it in the Bay of Biscay, there is a very strong swell, and we can see her anchor chain stretched like an arch, each chain mesh weighs on a ship of this size at least 200 kgs.

 

The ship has since changed its name, it is now called Vellos.

https://www.marinetraffic.com/fr/ais/details/ships/shipid:212330/mmsi:-9213375/imo:9213375/vessel:MARVELLOUS

 

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I'm curious to see what it's going to look like in 3-D printing, maybe a dung beetle...

 

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I have finished this windlass, but other winches are to be designed; I see 4 types on board. the forward main deck manoeuvring winch. The cargo mast winches, all identical. And the aft manoeuvring winch under the 5-inch 38 gun platform. They're much simpler to make.

 

I found a rare small picture of poor quality of the aft maneuver of a T2, it's better than nothing...

 

00-E7048-D-5320-4-BB0-84-AE-B88-ECD5-F4-

 

I love the steering wheel-shaped brake pads! 

 

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I reduced the size to 85% when I printed it. It came out pretty good. I'm pretty happy. The brake wheels are pretty well out, the arms are very thin, I could replace them with some PE I have, I'll see.

 

I'm now working on some of the forecastle's accessories, like the roller fairleads for the lines, the simple fairleads too.

 

Then I'm going to work on the double flak platform, I have enough pictures to draw it, there's an extra platform overhanging this double platform, on a pylon, a fire director visibly. It's going to be interesting to do.

 

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Tks buddys's! 

 

The impression of the stoppers, side walls a little too thin, there's a hole, but it will do it by fixing.

 

The forecastle is almost complete, there are still the two 40 mm anti-aircrafts platforms I started to draw on pictures, not easy to get the correct proportions in this case, without a plan...

 

Statistically, the 40 mm are the guns that have shot down the most Japanese planes on US Navy ships, especially suicide planes... 

 

Recent demonstration in the Russian style, with modern electrical directors: 

 

 

Often paired, sometimes in pairs, sometimes in fours... Manual:


 


 

USS Pamanset AO85.

 

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Thanks A76! I do my best. 😅

 

The drawing of the forecastle platform is finished. It wasn't easy without plans and with few pictures.  

 

3 pictures helped me, but I improvised a lot. I couldn't figure out where the ladder access of this platform was located...

 

A small ladder on the back probably.

 

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Thanks! 

 

Today printing of the 40 mm Bofors gun platform.

 

"The 40 mm Bofors is an anti-aircraft gun designed by the Swedish gunsmith Bofors in the early 1930s. Its initial version was called 40L60, because the barrel has a theoretical length equal to 60 times the caliber. It was manufactured in Sweden by Bofors itself, but also under licence in many other countries. Many of the nations involved in the Second World War used it in different versions, and even afterwards. Many versions are still in use in the years 2010. (Wiki)"

 

I first printed a 100% version of what I had drawn, having a doubt about the general size, I thought it was a bit big, but only the placement on the mock-up could give me some information.

 

So I tried to get a complete impression of the piece for testing, knowing that it would probably not be a complete success. The impression was indeed not very good with a few flaws. But this part allowed me to calculate the reduction of scale again of 10% as for the 2 rear batteries of Oerlikon 20 mm, same thing for the windlass. That's good to know. 

 

The ammunition boxes are perfectly out. My little sailor miniature helps me a lot with the size of these parts. Especially at the height of the platform walls, a little higher than a railing for protection of the sailors.


Both feet are out very well too, the angle of the bottom of the foot corresponds exactly to the slope of the forecastle. 

 

I've slightly simplified the second platform by modifying the underside of the floor to make it completely flat, to make it easier to print, but I'll reprint this piece with the original underside of the floor with the stall tomorrow. 

 

This part has to be perfect because you can only see it on the front once it's in place...

 

I will replace the two ladders on the forecastle with longer ones because they are a bit short, the longest ones on the WhiteEnseign board. But I have some longer ones left over from the Bismarck.

 

Both models.

 

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It's too big.

 

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This is perfect.

 

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13 hours ago, Ex-FAAWAFU said:

Not sure if you have already told us - forgive me if so - but what CAD program are you using for this amazing work?

And if you don't mind mentioning the printer make and materials in use? Thank you!

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Some seriously impressive work here Iceman.  As to your dilemma over the ladder, does this photo not show a vertical ladder where you have positioned it on the starboard side but going up the full height of the bulwark rather than having a cut out access?

On 14/08/2020 at 23:47, Iceman 29 said:

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Thanks Ex-FAAWAFU! I use Fusion 360 from Autocad (3DSMAX). I start to use this program during the month of may when staying at home was highly recommended.. Never touch to a 3D program before.

 

 

 

 

 

 

 

 

 

 

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3 hours ago, Chewbacca said:

Some seriously impressive work here Iceman.  As to your dilemma over the ladder, does this photo not show a vertical ladder where you have positioned it on the starboard side but going up the full height of the bulwark rather than having a cut out access?

 

 

Good point, Tks! Yes indeed, I rectified this problem yesterday by replacing the ladders with longer ones. 

 

I use the Anycubic Photon S, a low cost 3D printer, but it's working very well, not like a laser printer ( Coast thousand pound)  for sure but the quality is not so bad. 

 

 

 

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Tower for the M51 director is done!

 

I put some more details on platform, loudspeaker, box for binoculars etc..

 

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I also ordered some expensive Northstar resin miniatures directly, there are 18 sets with the MK51 firing director. 

 

https://northstarmodels.com/product/1-200-18-pcs-figures-us-navy-mk-51-director-crew/


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I printed the crow's nest of the shooting director today, it came out very well, I feared for the structure that I had made thin...

 

I hope that the diameter of the nest is good, I would vary with the Northstar M51 director and the figurines. I have a PE ladder to add.

 

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A few days ago I came across a photo I liked, showing a Higgins LCVP on the rear platform of a T2. The idea came to me to represent one of them. But apparently I didn't see any 1/200 to mount, too small.

 

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So I found a free 3D model on the internet, but as often when scaling down 1, some walls become too thin to be printed and this is not modifiable. Moreover the hull was too round and not angular enough, we couldn't see the bilges. Bilges that were to make the already very simple construction much easier.

 

I was inspired by it for some details.

 

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I came up with a construction plan yesterday morning that works just fine for me.

 

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The Pamancet participated in the Iwo Jima campaign, so the presence on board a LCVP is credible.

 

I also found this photo taken on the beach of Iwo Jima during the landing. I'd put this registration number PA 196-5 on it, I like the idea.

 

PA196 is the number of the Victory Ship USS Logan APA-196:

"For Iwo Jima the ship was assigned to the 23rd Marines of the 4th Marine Division. She landed Hq Company of the 133rd NCB on yellow beach D Day for Shore Party duty. Later, on 21 February, at 0445 hours".

https://en.wikipedia.org/wiki/USS_Logan_(APA-196)

 

The bumper took a nasty hit!
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The drawing took me all day, I'm going faster now, and I know better the pitfalls to avoid when designing.

 

I first broke down the "paper" plan in the program into a canvas.

 

Then I started to create the sketches of the couples, etc...

 

I still have a few details to add, and it will be printed tomorrow probably.

 

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Wiki:

 

Design

 

This landing craft (also called a barge) was created by Andrew Higgins (1886-1952) in his New Orleans factory. Its hull shapes are inspired by those of boats sailing in the Louisiana swamps. More than 20,000 were built by Higgins Industries and its licensees.

 

3 Built of marine plywood (teak, Oregon pine) with a metallic grey paint colour that falsely suggests it was made of metal, the LCVP could carry 36 soldiers, the equivalent of a section, and sail at 9 knots (16.7 km/h) when fully loaded. Its bottom is not flat as you might think, but it has a 'V' shape at the bow and a 'V' shape at the stern so that grounding does not prevent the boat from going backwards, even in 50 cm of water. 

 

Soldiers boarded the barge by going down along nets unfurled against the hull of the troop carrier where it was docked. They disembarked from the barge on land via a mobile ramp, the only metal and armoured part of the boat, which was lowered to the bow of the barge. This tilting bow door was added in 1942 by the U.S. Armed Forces to use the boat for landings.


Technical Specifications

 

Displacement: 8,100 kg
Length: 11 m
Width: 3.29 m
Draft: 0.96 m aft, 0.7 m forward
Speed: 9 knots (16.7 km/h), 15 knots at light speed (27.8 km/h)
Armament: 2 Browning 1919A4 (7.62 mm) machine guns.
Crew: 3 (1 helmsman, 1 deckhand, 1 gunner)
Capacity: 36 soldiers or one 2,700 kg vehicle
225 hp 6-cylinder 2-stroke diesel engine (Gray Marine) or
250 hp petrol engine (Hall-Scott)

 

Contribution:

"Andrew Higgins... is the man who won the war for us... If Higgins had not designed and built these LCVPs, we would never have landed on an open beach. The whole strategy of the war would have been different. "

General Dwight Eisenhower.

 

I liked this site showing the restoration of an LCVP for a museum, there are pictures, plans and video:

 

http://www.robertsarmory.com/Higgins-Boat.htm

 

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Tks A76!

 

In Russian doll style, I thought I'd put a Willys Jeep in the LVCP.

 

Luckily this time I found a free one that was intended for printing, although it is on a scale of 1.

 

I found it here, thanks to the contributor, it's pretty accurate and in parts. It's more practical.

 

https://impression3d.laposte.fr/en/3d-model/game/jeep-1941-assembly-kit

 

He advises to print it at 1/35 or 1/48, certainly draw for these scales. At 1/200 it can get complicated...

 

These pictures show the Jeep printed with wire with a D7 probably. Thread reaches its limits here.

 

So I printed it last night, while I was sleeping.

 

The printing is rather good considering the size, the folding windshield didn't survive. The gear lever and the brake are there. The steering wheel must have fallen into the bin, no matter how well the main one came out. I replaced the parts with salvaged PE, the classic three-spoke steering wheel was made in a wheel bar by removing branches.

 

The curved antenna is made of copper wire, the vertical is brush hair and the antenna shrouds, scratch as I like. I am stopped here.

 

Then painting, Humbrol 155 olive green, Humbrol 9 tyre, seats, Humbrol matt 62.

No marking.

 

I had some personal photos of Jeep Willys taken in Normandy for reference.

 

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I didn't dilute my paint enough.

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Yesterday LCVP printing, I printed a second one, rectifying some thicknesses for finishing, the first one was already not bad.

I put a PE propeller.

 

I painted the barge in Ocean grey 5-O, then I put some ageing, but I'm not yet used to acrylic which pumps a lot, normally it should be two less patinated, the pictures increase the patina a bit too. 

 

From what I've read, these boats were suffering a lot in the landing zones, afterwards also for supply.

 

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