Toptube storage box for Cannondale Topstone Carbon Bottlecage mount

Toptube storage box for Cannondale Topstone Carbon. It uses the existing bottlecage style mount (M5 Screws 65mm apart) and follows the toptube shape. It has plenty of clearance to the steering tube that could be used to increase storage capacity.

FreeCAD 1.0 design file attached, feel free to remix for other bikes or adjust the size.

Printed in PETG on Bambulab A1 with 0.2 layer height and 3 wall perimeters and supports on build plate only for the lid hinge area. Use the same filament for the hinge bolt.

I used classic contour fuzzy skin with 0.2mm distance and 0.08mm thickness. Might benefit from shorter distance / more thickness to better mimic the textured plate surface on the lid.