Monthly Archives: September 2013

Private Robertson V.C. : 3D-Printing Project for a Hero

Private Robertson V.C. in 1:72

Private Robertson V.C., lead ship in the “Hero Class”, in 1:72

Latest completed model. Private Robertson V.C. is the first of nine ships in the Canadian Coast Guard’s “Hero Class”, based on the Damen Stan 4207 design.

This project was completed almost entirely with 3D printed components. Basic CAD layout and part design was done by myself, based on hundreds of photos and a small amount on intel found on the web… the owners of the drawings were not willing to share! More info on the build can be found on the Model Warships site: http://www.shipmodels.info/mws_forum/viewtopic.php?f=13&t=151938

Regarding the feasibility of 3D Printing for models: Yes it can work! But the cost in design time and materials probably excludes it from consideration from the average modeler’s budget. The technology did allow me to create parts that would have been extremely difficult to manage with traditional methods, such as the complex mast assembly. This was actually printed as a single component.

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Mast assembly

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A Police unit is embedded with the ship.

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Foredeck details

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Overall, aft quarter view

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Controlled-pitch props drive the boat

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Pilot house detail

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Display case

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CAD design and freshly printed cabin parts.

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Pat’s Stud Link Anchor Chain Used in John R. Haynes’ Latest Build

I’m proud to say that master builder John R. Haynes used my 9.5 LPI (link per inch) chain is his latest build, a 1:128 scale USS San Francisco. Detail images of the model can be seen at Steel Navy: http://www.steelnavy.net/SanFrancisco128JohnHaynes.html , and I’ve linked a couple images below.

The chain is available from The Floating Drydock.

John R. Haynes’ 1:128 USS San Francisco, as seen at Steel Navy

 

Anchor chain on the USS San Francisco

 

 

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Pat’s 3D Printed Stud Link Anchor Chain

I’ve been doing a lot of work recently with 3D Printing… and I really need to blog more about that! But here’s one example that could be useful to you: Real stud link anchor chain, in sizes smaller than any currently available in metal.

mmmChain

Three sizes of chain: 7.5, 9.5, and 11.5 Links per Inch (LPI)

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The chain is fully flexible. 7.5 LPI shown here.

The chain is offered through The Floating Drydock in 12 inch lengths.

A few notes about the chain:

  • It is an acrylic photopolymer- plastic! As such, it’s not suitable for operating anchors on R/C models.
  • The plastic needs some clean-up, as the 3D Printing process leaves waxes and oils on the parts. Hot soapy water or mineral spirits will do, with some gentle brushing. This may result in a white chalky residue, which in turn can be carefully brushed off, or if stubborn, just left in place.
  • The plastic responds well to acrylic paints. Hobby enamels (including primer) may react with the plastic and not cure completely.
  • The largest size, 7.5 LPI (0.9mm wire diameter) is suitable for 1:96 battleships.
  • The smaller sizes, 9.5 LPI (0.75mm wire) and 11.5 LPI (0.6mm wire) may be suitable for many smaller models; your research will tell.
  • 11.5 LPI is the smallest manufacturable. I wish we could go smaller… 15 LPI would be good for the new 1:200 BB’s, and a 1:96 DD needs about the same.

Here are links to a couple happy users:

http://www.rcgroups.com/forums/showthread.php?t=929997&page=11#post25603442

http://www.wmunderway.8m.com/cgi/yabb2/YaBB.pl?num=1366840224/26#26

If you find a place to use this chain, I’d love to hear from you!

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