Nate's PANDORA in 3D

[3DShipWright]

 

And yes, I know that is not Pandora  

 

Executive Summary

After deliberation, I am taking on the HMS Pandora as my next project. Pandora will be a digital build using multiple software packages, and will be optimized for printed artwork or film. The model will also be rigged for animation for use in film, though I myself do not plan on animating it.  

The model will be high-poly, and of high historical fidelity which is why it will be documented as comprehensively as possible here on the Model Ship World website. The targeted accuracy is a less than 1% deviation from any credible historical source across all conceivable metrics. This applies to all components modelled

 

About this Build Log

I think my biggest asset and greatest hope of completing Pandora is you – the MSW community and the overwhelming knowledge you guys (and gals) have of ship building. I received excellent feedback on all three of my previous builds, yet I am chronically at fault of two things, namely:

 

• a.      Not seeking out advice when I have a question or run into issues during the build.

      and…

• b.      Not sticking to the topic or theme of the build log.

 

The latter is especially bad. For example: with Confederacy, I began the build log as an actual step-by-step tutorial of 3D ship modelling in blender, then when that became unsustainable, I moved to posting screenshots of my progress accompanied by short update logs and upcoming tasks. Towards the end I didn’t even finish posts that were supposed to be a ‘part 1 of 2’ or something similar.

With my 3D longboat, I am proud to say that I have at least finished the project (gallery photos coming soon! No, really, I promise. Lol). However, I opened that topic thinking I would turn it into a showcase of how to correctly turn a single model into multiple boats in a 3D render and have them look convincing. But it turns out that doing just one was hard enough.

 

Fact is, I simply need more overall discipline in my work. And Pandora is going to be an absolute BEAST to model correctly. I don’t expect her to be perfect – that would be an impossible standard – but I do expect myself to be far more patient than in the past.

 

Framework

The theme and structure of this log will be simple: A 3D PANDORA build log. I will still talk at length about how I achieved certain results within the software and call out a few features by name, but I’m going to shy away from anything that is more step-by-step. Not guarding any trade secrets here, it’s just that as my skill has improved, so have the complexity of my workflows. At this point I fear my methods won’t be understood by anyone unless I make a video tutorial.

 

Most of this project will be done in Blender. The final product will be digital, and I find blender to be the best intermediary software between. However, as I’m intending this to be a comprehensive, historically accurate build, I will attempt to be ‘software agnostic’ especially in the early stages of the build. As far as my pre- and post-production needs are concerned, Adobe pretty much corners the market. And even within Blender, I’m making extensive use of 3^rd party CAD addons that will allow blender to do 90% of what DelftShip does on the hull front.

 

Margin of Error

The allowable margin of error for this project is 1% across all metrics. This is not intended to shield me from mistakes. I will make plenty of mistakes along the way. When I do, call them/me out. Full stop. This is important, not only from an educational perspective, but because unchecked mistakes compound and in extreme cases can even break the project. Rather, this buffer will serve the inevitable reconciliation between imported plans. Even after hours removing distortion in a highly capable software like Photoshop, then further hours spent positioning the images in Blender, there will inevitably be things that won’t line up properly.

 

 

 

 

Excited to get into it with y'all. Stay tuned!!!

 

 

[3DShipWright]

Current state of the project - I will bridge the gap in an upcoming post, but presently, I'm finishing the external planking.

 

[herask]

nice one! I also have Pandora on hold, I thought of continuing after I finish the sails on HMS Pegasus, but I think I'll reconsider because topic saturation 😁. 

 

good luck, will follow

[3DShipWright]

Outer planking nearly complete. I have one more rail on the forecastle to model, then its on to the channels, fenders, quarter deck cut-outs, and so-on.

[3DShipWright]

Here's the latest from pandora. The billboard needs to come in at a sharper angle so I'll have to fix that.

 

Thing is - the plans show two of the chain plates affixed to the hull behind the billboard, yet the plans also show the first three planks of said billboard affixed to the outer planking. That seems like a physical impossibility - am I missing something??? Are there vertical grooves cut into the inside of the first three strakes of the billboard to allow for the chain plates?

 

Thanks in advance

 

 

 

[Trumper07]

Fascinating work so far - thank you for sharing 3DShipWright! Super keen to follow your 3d model as it develops : )

[3DShipWright]

Hey Folks, Happy New Year!

I'm excited to be back at the table on Pandora and now have new resources at my disposal that I hope will make Pandora my best project yet.

 

The keen observer among you may have noticed that while I began this project in the traditional manner - that is, gathering/lofting plans, building the keel/stem/stern assemblies, and getting the moulded breadth 'shell' built in 3D - I then jumped straight into making the exterior planking and fittings. This probably leaves many to wonder what, if any, internal details I plan on modelling...

 

Well, I'm happy to say that even in its digital form, this Pandora will be a 100% built up model. Every individual frame, beam, plank, nail, bolt, and sheet of copper will be captured in excrusiating detail. It is for that reason that I needed more books in my library. Now, thanks to my family, friends, and loving wife, I have acquired 4 new (old) titles that should help me do justice to this famous piece of Naval history. Among these, the famous Ship Builder's Repository of 1788, shall be indispensable for construction, dimensions, and put plainly: how it all fits together.

 

With all that said, the reason I was working on the outside hull and fittings was precisely because I could work on these parts with relative confidence while awaiting the reference material to do better justice to the frames and interior of the ship. I've nearly finished the external planking and am pleased with the results for the most part.

 

 

The 3-2-1 Pattern and the Rule of 4

The external planking on Pandora conforms almost exactly to the plans. Including the garboard strake, there are 21 'standard' strakes that follow the 3-2-1 pattern I pointed out in my Confederacy project. I know this confused some folks, so I'll do my best to explain how I interpret this pattern:

 

There are a series of vertical cuts that separate each strake along the hull into individual planks (duh!)

 

On Pandora and many other ships I've seen, these cuts are made almost exactly where the station lines are.

 

Except where the planking is sheared off at the bow and stern, each plank is exactly 4 stations long

 

 

Now, the 3-2-1 pattern, as I call it, refers to how the planking is staggered between strakes. It should actually be called the 'Alternating 3-2-1 Repeat-as-you-go-down' pattern. Yuck! But not to worry, it's simple enough to understand:

 

Starting at the foremost cut in each section, move aft 3 station lines to get the location of the next cut in the strake below the one you started on.

 

Next, move forward 2 station lines to cut the strake below that.

 

Finally, move aft 1 station line and cut the plank below that.

 

That's it! Just repeat the process until the whole hull or hull section is complete, using the same station line you started with, only 4 strakes down. This works out well, as every plank is 4 stations long, and every vertical cut in the planking is made 4 strakes above the last one. Hence, the Rule of 4.

 

 

 

Hull Plank Sections:

 

Section #1: Garboard -> Tuck -> Bottom of the Lower Counter

The planking for the first 21 strakes on Pandora follow the method I described above, but even within this first section, the planks are not evenly spaced (i.e. equal siding width) across all station lines. The reason is the tuck

 

The tuck at the stern is at the top of the16th strake. The 16 strakes are evenly spaced from the keel to the tuck...

 

As are the 5 strakes that extend outward from the tuck to the diagonal scarfs that make up the next section of planking. Note that though equal in width to each other, these last 5 strakes are considerably narrower than the 16 that preceded them.

 

 

Upon reaching the deadflat at midship, all 21 strakes are evenly distributed and continue that way all the way forward. When viewed from behind, the cuts from the sternpost and lower counter to their respective place at midship appear more or less as straight lines.

 

FYI - right now the topology is only able to change at the stations, half-stations, and the FP/AP, so more subdivision between these lines will be required to get the strakes to delicately 'curve' as they approach the tuck and lower counter. I do plan on fixing this later - as I will also need this shape to be more accurate when I add the transoms.

 

 

Section #2: Diagonal Scarfs -> Elm Stringer or lower Thick Part

Next comes a series of 3, double-wide strakes (each being the width of 2 normal strakes, or 6 strakes in total). This part of the ship has the sharpest changes in inflection points along the station lines, so for structural reasons, each double-wide strake is cut into nibbed triangles (and inverted triangles), with each apex being 2/3rds the width of the total strake. The apex of each plank is also offset, so that one diagonal cut to the apex is 1 station long, whereas the other is 3 stations long. This way each plank is still 4 stations long. The direction of the offset also alternates between the three double-wide strakes.

 

Note that there is also a 'washout' at the bow and stern where the cuts once again simply split the strakes in half. For the sake of simplicity, I set the washout points to align with the foremost and aftmost cuts on the rest of the planking which is at stations 'R' and '23', respectively.

 

To be continued in next post...

Edited January 3 by 3DShipWright

[3DShipWright]

Pandora's framing, still very early stages. I have about 2/3 of the perpendiculars modelled, and now I'm working on the fore cant frames. Each futtock is extremely precise from the floor timers up through the top timbers, and each dither and bend mathematically in accordance with the scantling data in The Ship Builder's Repository

 

This applies to:

• The room and space calculations provided
• The siding and gap dimensions taken from the 15in deadflat at midship, the other waist/midship stations (stations '5' to 'N') and outer perpendicular sections (5 in total).
• The dithering with each futtock above the floor - 5/6ths and 2/3rds, respectively
• The pattern of offsets and frame staggering and perhaps more importantly the specific points on the ship where these general rules were broken.

Note: All chocks not currently modelled. They will be cut out from the existing frames and modelled later.

 

And a couple screen grabs...

 

 

Till the Next,

-N.

[3DShipWright]

Hey folks, haven't posted in a while, so here it is...

 

Frames are still progressing. Sadly, I don't have the same amount of time these days to dedicate to modelling as I used to, but I hope to complete the internal frames within the next two weeks, at which point I can move on to cutting out the internal planking.

 

Building the frames - or at least the incredibly accurate way in which I'm doing them - is very tedious and slow. The good news is that once I'm past this step the rest of the build should pick up in terms of pace.

 

 

 

And here's a screen shot showing how well my modelled frames align with the plans. Note - the height of the gun/sweep ports is correct. There is actually a very rare distortion in the AOTS book that caused the images to get squished vertically, whereas my modelling conforms perfectly to the RMG plans, as well as the scanting tables from The Shipbuilder's Repository.

 

 

Best,

-Nate

Edited Friday at 11:55 PM by 3DShipWright