It is my role in life to provide inspiration to others...
There was some warpage in the AC unit, which if I were to make more of them, would fix with more wall thickness (I took a lot of material out of th bottom to save resin) and some inner bracing, but I'm not making more of them. It will work fine viewed from the great distance. Here's the two add-ons being checked for fit on the roof. The roof door looks a little oversized, but not really. I scales to 7 feet tall.
I designed the billboard and set it up for 3D printing. My original design of 7" wide was too big for my even-larger printer. I reduced it to 90% and it just fits. I was going to try and print it in one piece, but that didn't fit so I broke it up into subassemblies and will print it next week. I think it's overbuilt, but it's designed to handle Kentucky tornadoes.
Here's the breakdown for printing. The three angle braces are one print, and the rest is another.
On the turret front, I successfully (sort-of) printed the entire gun slide assembly. It was successful because the details were superb. Not-so-successful because it warped and the gun, while fitting perfectly, points askew. Even the lifting handles resolved on the counter-recoil cover.
I tried using the "hollow out" feature on the slicer which opens up spaces inside objects to reduce resin use. You must provide opening so any uncured resin can escape. I did all this, but was unhappy with the results and it may have contributed to the warpage. All the stuff around the breach resolved nicely including the coil springs on the breach counterbalance. The breach weighs over 800 pounds and is opened with the help of some air cylinders and springs.
From the side, the gun looks great.
From the top, not so hot.
After hours of redesign, I decided to split the slide portion, make the breach yoke a separate part, and provide a means to screw the halves together giving a bit more control than gluing them.
I'm using some massive (in this scale) screws and nuts to assemble it. it's what I had in the shot. So I drew some plugs that will fill the holes after it's assembled. Due to the nature of the turret, you may only see the flanks of the one of the guns on the end depending on where I put the transparent parts. It will take five print runs to make parts for three guns. The first slide set is printing now and will be done at 7:00pm. Another change I made is to re-size the trunion pin so I can use a piece of 1/4 aluminum rod as the pin. Again, the re-draw showed some errors in my original that I'm glad I fixed before going ahead.
I also got a beautiful print of the massive ring gear that is an integral part of the turret. The top surface is the lower race for the roller bearing that support this 2,500 ton beast. The turret weighs as much as a destroyer. The four segments key together since I couldn't get a full ring on the printer. Prototypical I might add since the rear one was built up of segment too. So far the new printer has been flawless. The changes Elegoo has made on the finish on the build plate has produced no separations during printing. And the higher resolution and print speeds are all pluses. So of the details I'm getting on this project wouldn't have been possible on my Elegoo Mars Classic.