Category: 3D Printing

Dunker Church II

~ anthony ~ Leave a comment

I started this blog quite some time ago with the idea of charting my progress in designing and printing some 3D terrain items. And to be fair, until recently, that’s where it kinda stopped, a hiatus of a year with very little progress, or at least progress that was shared or recorded.

When I posted Antietam 3D and Dunker Church I it was done with the idea of keeping a record of research as I tried to turn a real building into a facsimile that would be representative on the tabletop. I wanted to adhere to the idea that building would be “usable, printable and accurate”, pretty much in that order all while knowing that I would very often get “hung up” on the accurate…probably the reason I put it last.

So this is just an update post, after many prints and much research, I finally have a design that I think represents my ideas and “looks about right” for the tabletop. It went from being a two part print to a three to avoid overhangs when FDM printing, and was recently reworked to include bevelled sills to avoid the hanging (or drooping) threads while printing* after a test print for my Greek Galley found it worked great. Added to which I recently changed the colour of the PLA I was using and have to say, “I love printing in brown” (or grey). The pigment used to colour the plastic does have an impact on the strings and hairs that adhere to a print, just as much as room temperature and humidity can also have an effect on print quality.

So while I would like to create a battle damaged example, at the moment, I am content to move onto another project for a bit, just to help satisfy my inner wargaming butterfly. But for now, a teaser, and some waiting, as the roof will take 12 hours to print with the settings I use, and then I still have those limbers, before I apply some paint.

Ultimaker 2+, head 0.2mm, layer height 0.06mm, infill 22%, speed 30mm/s

* If you print with a SLA printer this will not be a real issue for you, but you get to deal with resin and UV hardening.

Sea Battles – the ships

~ anthony ~ 2 Comments

When a clean up leads to inspiration, and some un-based, yet already painted hoplites, archers and slingers, would make great crew for 15mm galleys.

Chapter 4 of Paul Hague’s, Sea Battles in Miniature, is devoted to Ancient Galley Warfare, and his simple scaled models (seen on both the cover and inside photo pages) are perfect for the right scale and the small number of vessels needed for City-State conflicts.

Instead of scratch building them with card and balsa as Paul obviously did, I decided on using 3D printing to turn out somewhat uniform ships in an efficient manner. This is my second attempt at a galley using SketchUp*, I deleted the first after I made a few workflow errors that played havoc with the geometry after I skewed the model to create the front and rear rakes. I have not yet printed it, since it seems a little large when I put it on my slicer bed. I basically had to align it at 45o, and with a length of 224mm I think it’s a little large? So I need to sort out a size that LAR and also detail the deck and provide a hole for the mast. I also want to add some options, in terms of prow and stern posts and I want to add steering oars that are removable.

Heading down the rabbit warren that is an internet search, I found a blog (small soldiers – stout hearts) talking about Old Glory 15mm Galley Wars. Unfortunately the Old Glory website does not mention dimensions or include a ruler in any of the photos for a size approximation, though using the fat finger fudge method of measurement on the photos on the Small Soldiers Blog showed they were 8.5-9 fingers in length. Given that each finger also approximately equals the height of the 15mm figure, gives the vessel a very guesstimate length of 135mm, far smaller than my 224mm.

I also found a very old “Angelfire” webpage where William Johnson, show his method of scratch building 15mm galleys that look very similar to the ones of the cover the book. On the page William says that his models are approximately 7″ in length, or just under 180mm. So clearly I am going to have to do some resizing either in the slicing software, or more preferred in SketchUp before I site mast holes.

Paul himself states his ships are approximately 6″ in length on page 33. So I think I will aim for approximately that length, which gives a working deck space of about 150mm making the overall length a little longer. Also in the book, the rules allow for detachable oars to simulate damage and battle loses to the rowers, which might be why Paul did not include the deck over the heads of the rowers as was typical in Bireme and Trireme construction. I think I will stick with his plan for the moment, and model the oar banks so I can use magnetic tape to hold them in place.

I also note from my first (well first in probably 20 years**) peruse of the rules that his distances are huge. Movement rates of 24″ or even 12″ will overwhelm the average home table far too quickly, so I will have to make some modification to those to make the rules work for my space. Given that my planned table is probably only 4-5′ across, slowing the forward action down will allow for some steerage and manoeuvring, but careful to avoid the endless trudge across the table, that sometimes results in such rule modifications.

* I really should take the time to learn Fusion 360, but I am really too lazy and I understand the workflow using SketchUp and can get a working digital model fairly quickly, even if the printing does take some time with a .2 head.

** This book was one that my local library had amongst it’s collection, and I recall during my wargaming larval stages (ages 14-18) borrowing it on a number of occasions just to be inspired, much the same with Bruce Quarries fabulous book, Napoleon’s Campaigns in Miniature, historical inaccuracies and over complex rules not withstanding.

Dunker Church I

~ anthony ~ 5 Comments
Dunker Church, Antietam: close up
(US Library of Congress)

Once upon a time…ohhh, about 3-4 years ago, I modelled the Dunker Church as a digital file, the result of a quick google, it served it’s purpose but, in truth, it was never accurate enough for my eye.

And so as part of my return the ACW, I decided I needed to rectify the obvious errors in my first effort, and come up with 2 models: one for the eve of the battle, undamaged and ready for its Parish, and the other as it was photographed by Alexander Gardner in Sept of 1862. A high resolution of the image at right would serve as a main point of research, but sadly photos from other angles taken in the days after the battle are rare. There is this photo, from the North, taken in the right year, (printed later), but it unfortunately was either taken before the battle, or after any damage was repaired.

Flag of Truce, Alfred Waud
(US Library of Congress)

I had almost given up finding an image showing the North side of the church, when I found the drawing at left on in Antietam, Voices of the Civil War (pg136), I then went looking for it at the Library of Congress, to see if there was any other information attached and to get the high quality version. Importantly for me, it shows the damage done to the North side of the Church, and shows that cannon fire tended to shatter whole bricks giving the damage a geometric and squared shape rather than a splintered or round hole, and further it also shows the shutters on that side are shut.

Back to the software.