Rib Cage with Sternum

This is a solid model combining the ribs, thoracic vertebrae, and sternum of the skeleton made available on the NIH3D website under CCBY license. I merged the individual models and remeshed it into a solid 3D printable model.

The model is scaled down to 60% to fit on the Bambu A1 (you can see the scale in the slicer to adjust up if you want). Print orientation is with the posterior surface down so that supports are shorter and so that supports are mostly confined to the sternum, costal cartilages, and posterior rib surfaces. If you decide to print upright upside down (since rib 12 is very small, just be aware that there will be more supports along the length of each rib that way.

My changes from the original:

I extracted the ribs with costal cartilages, thoracic vertebrae, and sternum from this skeleton. I merged and remeshed them into one solid model, smoothing and thickening where needed. This model is scaled down to 60% to fit on the bed of the Bambu A1. 

Print settings:

I printed this with 0.28 mm layers so that print time was 12.5 hours. My ribcage was printed with Sunlu matte PLA in white.

• 2 walls, 15% infill
• tree supports on build plate only, at 30 degrees 
  • top z distance = 0.2mm
  • top interface spacing = 0
  • top interface layers = 0

Be very careful removing supports and use a matte filament! Clip supports near the top first--just snip gently at the small branches and the larger pieces will start to fall away. I actually managed to remove all supports without breaking any bones--rib 12 is especially thin at this size so be careful there.

Generic 3mf on Printables