Summary Re-designed the whole clip, I did print the original one but was a bit too thick. Sony Belt Clip A.stl Sony Belt Clip B.stl The new design is closer to the original and has a clip. The clip's hole is for 1.75mm filament that you can use, the only thing extra you need is a small spring to get the clip to have tension. I used an old hair clip from my wife and took the spring, then used it for my new walkman clip. No supports needed or rafts. I do not have the screw for it but made the screw hole, this helps it clip to the walkman nicely. I believe this fits other walkman models, but cant test as I only have this, but while Googling i found that the following walkman might work. Sony WM-F15 Sony WM-F65 Let me know if it fits any other. Cheers Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator 2 Rafts: No Supports: No Resolution: .02 Infill: 10% and above Post-Printing You need an extra spring I got the spring from an old hair clip. Place it in the between the holder and clip, insert a 1.75mm filament and melt the ends a little to keep it in place. Add a small screw (Sorry don't know the size) to secure the holder. Enjoy your walkman on your belt.