1/350 APD (High Speed Transport)

Started by George R Blair Jr · 156 · 1 month ago · 1/350, APD, DE, Destroyer Escort, High Speed Transport, Trumpeter, USS England
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    George R Blair Jr said 1 month, 3 weeks ago:

    I have hit the proverbial wall for the last few days. I thought I had a good solution by designing and printing the parts I needed for the ship, but the parts have proven to be an illusive solution. Most of the parts seem to fit and will work well. The big plus for these parts is that I was able to use scale thickness. That turned out to be the Achilles Heel for the gun tubs for the 20mm guns. I originally planned to use the ones in the kit, but it turned that the gun tubs on the APD were a different configuration. Over the last couple of days I have made several unsuccessful attempts to print these gun shields. The walls a very thin and it has proven impossible to remove the gun shields from their printing supports without destroying the shields themselves. When you get tired and frustrated, you start making all sorts of mistakes. This afternoon I finally printed a good set, then I realized they were twice the size they were supposed to be. I design the shields twice their finished size in Tinkercad to make them easier to work with, then I reduce their size by half in the printing software. Of course, I had forgotten to reduce their size in the one successful set I made this afternoon. I finally got a good set in the right size late this afternoon. I will attempt to remove them from the supports tomorrow.

    I also got the troop compartment in something close to finished form. I sprayed a little gray primer to check that everything was smooth and ready to go. Hopefully I can get moving next week.

    Cheers everyone.

    6 attached images. Click to enlarge.

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    John vd Biggelaar said 1 month, 3 weeks ago:

    That's some challenging printing, George @gblair
    Let's hope you will be able to remove the last good set from their support.

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    George R Blair Jr said 1 month, 3 weeks ago:

    Hi John (@johnb): I discovered it was easier to remove the shields from their supports before curing them. The resin is still a little soft and pliable before curing, so all of them survived. Now the trick is to see if they are still too fragile to use.

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    Carl Smoot said 1 month, 3 weeks ago:

    There are several challenges here that you've mentioned George (@gblair). Is it possible to make the supports smaller? It's hard to judge from the photo, but the supports look quite large compared to the thinness of the walls. You photo of the lower bridge piece caught my attention because it looks very similar to what I am working on right now wit my San Francisco build (although the structure on mine is atop the hangar structure, rather than on the main forward structure).

    There are so many tiny details on these ships, it's mind boggling at times. And you mentioned floater nets which I am not entirely sure what they are but which reminded me that I need to compare what I am building more often with photos. I am tending to reconcile PE details and kit parts without considering the photo references enough.

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    George R Blair Jr said 1 month, 3 weeks ago:

    Hi Carl (@clipper): Printing using liquid resin is always a balancing act. I tried using smaller supports over the weekend, but the pieces ended up pulling apart. The 20mm gun tubs that I am making don't have an integral floor, so the supports have to attach to the very thin sides. I think this latest batch may work OK. I was tempted to get some gun tubs from Model Monkey, but all of them were in the wrong configuration.

    I found some very detailed WW2 blueprints online for an APD. They were free and provide a wealth of detail. The best part of the plans is that they identify all of the equipment, thus solving our problem of not really knowing what a lot of this naval gear is called and what it does. I found these free plans on Model Monkey, and they have a number of WW2 US cruisers among their plans. Have you checked to see if they have something you can use? I found that once they are downloaded that I can zoom in on specific areas and print a specific section of the plan.

    Cheers

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    Carl Smoot said 1 month, 2 weeks ago:

    Thanks for the tip George (@gblair). I went to look at these and there was indeed a set of plans for the SAn Francisco. However, they are the same set I just happened to find the other day. The plans appear to be for the 1944 version (or at least post 1942) as several of the gun platforms sport 40 mm aircraft mounts and there are far more AA guns than the 1942 version had.

    Still, the drawing is useful for identifying many of the features.What I found interesting is that the structure that I am currently working on, what I called the hangar structure, is also a stores and workshop structure. The upper station that I mentioned was similar to that photo of yours appears to be part of an auxiliary control center. I suspect in case the forward and primary control center (i.e.bridge) is damaged in gunfire.

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    George R Blair Jr said 1 month, 2 weeks ago:

    Hi Carl (@clipper): I'm glad you found the plans. Really cool to have all of these plans available for free. I have been using the sections that I enlarged to figure out what equipment is on the deck, and especially where all of the new doors are located on the troop compartment. All of these wartime ships were constantly being updated and reconfigured, so you have to just pick which one you are doing.

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    Spiros Pendedekas said 1 month, 2 weeks ago:

    Challenging 3D printing indeed, my friend @gblair! Looks like you nailed it, though.

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    George R Blair Jr said 1 month, 2 weeks ago:

    Thanks, Spiros (@fiveten). Now I need to see if I can clean them up and get them on the ship.

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    George R Blair Jr said 1 month, 2 weeks ago:

    I spent the last few days trying to execute a plan that I had to move this conversion forward. I basically think of this ship having 3 main areas: The forward deck area, the rear deck area, and the raised center section. The forward and rear sections are pretty straightforward, so I thought I might be able to finish both of them, paint them, and then save the center section for last.

    I set about getting the two sections done. I did a lot of detailing in both areas. I have a set of blueprints that I got online for APDs, so I used them to add details such as the bitts and chocks that are clearly shown on the plans. The model was missing a number of bitts and chocks on the forward and rear decks that are visible on the plans, so I added them using items that I had designed and 3D printed. I finally reached a point where I thought I could add the PE railings to the forward and rear sections. I had a PE set for Destroyer Escorts from Gold Medal Models that I planned to use for the railings, especially since the railings would match the upward curve of the hull on the forward section.

    It was at this point things came to a fast halt when I compared the forward railings to the model. There is a cutout in each railing for each bitt and chock. When I held the railing up to the model, I realized the massive error I had just made. The model does not contain all of actual bitts and chocks on the actual ship, and the PE set is designed to match the model. So, when I added all of the bitts and chocks that are on the plans, but missing from the model, I basically made the railing unusable. I instantly had the feeling I was taking one step forward and two steps back.

    After some thought, I realized I had two choices: either cut the railing to allow for the new bitts and chocks, but weakening the railing, or scrape off the added detail and use the railing as is. I decided to scrape off of the new detail and use the existing railing. I know this makes the model less accurate, but I am rapidly running out of steam on this build. So, I made the choice that will move the model forward with the least pain. I am getting really close to setting this model aside for a while, which I have never done, so I want to get this model moving. I can see why some people build model planes, and other build model ships. I think it takes a special modeler to deal with the intricacies of a detailed ship model, especially if it is a scratch build or a conversion.

    Hopefully I can make some progress tomorrow. Cheers.

    11 attached images. Click to enlarge.

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    Carl Smoot said 1 month, 2 weeks ago:

    Hang in there George (@gblair), but at the same time, if you need to step back for a bit, please do so. As I mentioned to Alfred, this is not really a group build so there is no pressure to finish this by a certain date. I like the detail work you're doing with the 3D printer. Every time I read of your work, I keep thinking I need to look into getting started. And I think I eventually will when some other aspects of my life slow down a bit.

    I'll have something to post in my build thread soon. I am waiting to get some final painting done before updating the thread.

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    George R Blair Jr said 1 month, 2 weeks ago:

    Hi Carl (@clipper): The complexity of this conversion seems to have layers on top of layers. Just when I think I have it all figured out, something else pops up. I have all the pieces in place to get this done, it is just a matter of getting them to come together. I am sure there are ship modelers out there who are laughing at these issues, which are probably commonplace in ship modeling. Mentally I am ready to move on to another model, but I want to finish this one first. I can't imagine the complexity of your cruiser, with all the extra stuff you are adding.

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    Spiros Pendedekas said 1 month, 2 weeks ago:

    Still, a great progress, my friend @gblair! Hang in there!

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    John vd Biggelaar said 1 month, 2 weeks ago:

    Some good progress, George @gblair
    Take your time, you will finally get there.

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    George R Blair Jr said 1 month, 2 weeks ago:

    Thanks, Spiros (@fiveten) and John (@johnb).