FINALLY! A FULLY FUNCTIONING TROMBONE!!!!! All the items fit into each other like a regular trombone. It even uses a MOUTHPIECE! The trombone is smaller than most and the mouthpiece is smaller too!Thanks to Gernreich who created a new mouthpiece and built-in support for the inner-slide that made printing of the Trombone: Fully Functioning possible.Rafts: YesSupports: Doesn't MatterResolution: .15 or belowInfill: 50% (100% Recommended)Notes: Inner-Slide Smoothing and Lubricating To make the Trombone: Fully Functioning's sliding more efficient, it is recommended to smooth out the inner-slide and add slide lubricant. To smooth the inner-slide move the inner-slide and the outer-slide back and fourth until smooth or use sand paper careful. For lubricating, Trombone slide oil or vale oil will work best. UPDATEThe Trombone: Fully Functioning is fully operational. If all of the pieces are printed at the recommended layers, the trombone will work as you can see in the makes of the Trombone: Fully Functioning.In addition,I am accepting any comments about the Trombone: Fully Functioning and will take to consideration any additions individuals may have on the trombone.Special Thanks to GernreichSpecial thanks to Gernreich who made the Trombone: Fully Functioning complete with supports built into designs for the inner slide and a new design for the mouthpiece. If you want to find more about Gernreich, his designs, makes, and likes; you can visit:http://www.thingiverse.com/Gernreich/about