Combination of 4 rare Lego part #2580 Support 2 x 2 x 5 Lattice Pillars. These pieces are crazy-hard to find, only ever available in extremely small quantities or at very low quality, and exorbitantly expensive to purchase, especially in the color red. This specific model was created to help prototype the Lego Desktop Saturn-V Apollo-11 Mobile Launcher designed by Valerie Roche (@whatsuptoday19) and currently gathering support on Lego Ideas. Head over to https://ideas.lego.com/projects/124515 to help make the design a reality!
**Oct 2018 update: rev1 file should fix scaling issues with new versions of Cura
For best results, enable support structures (scaffolding) for entire model. Experiment with disable stitching and combining options to ensure the bottom of the model is open for attaching other pieces. I wasn't able to get it to print the top holes, but perhaps you'll have better luck with figuring out the best settings. For my particular Lego model, the holes weren't important, but let me know if you figure out how to print the piece with them!
Also, as with most 3D printed Lego pieces, the model may need to be scaled up by 1 or 2 percent to allow pieces to fit together properly (I found most success, on an Ultimaker 2 at least, with both a 2.8% horizontal and 1% vertical increase). Your results may vary depending on the model of printer and material used.
Creating the model was fairly simple. I started with a single 2580 model taken from the free LDraw library, then I adjusted the scale in Blender, corrected some of the model's normals, and duplicated it three times. I then selected all 4 structures and exported them all as one .stl file. From there, it was a simple matter of trial and error figuring out the optimal slicing settings in Cura. The model in the pictures was my first attempt at printing, and I'd say it went pretty well!