A Scroll 'ello for your O'cello

thingiverse

I really wanted a scroll for the O'Cello, so I found this fantastic violin design by bchan based on a Stradivarius, scaled up to use as a base model to create and build the scroll. https://pinshape.com/items/24608-3d-printed-violin Also, since there were no significant changes, if you have already printed an O'cello, you can easily switch to this design too. First I had to get them lined up perfectly. I redesigned the top of the neck and the bottom of the scroll. I wanted a joint that fit together mechanically and also integrated the through holes for the strings. This took a substantial amount of work to design, but the real challenge was generating an FDM printable scroll. I tried several orientations and support systems, but everything came out unattractive, until I had the idea for integrated supports. This is a challenging print, but with some filing and sanding, the result is well worth it. I have included a "fit testing" file that just has the basic joint. You can use this to test your print settings or practice filing. Trust me, you should definitely print this first, just to make sure! Scroll down further on the page for printing tips! In hindsight, the design for the scroll join may be more complicated than it needs to be, but I am a former woodworker and like dovetails! The complicated support stand is an absolute necessity to get a decent print from a filament printer. After all the work, I was thrilled to get it working and will leave it as is.