Lamp shade for long tube COB (LED) bulb

thingiverse

I'm creating a simple shade for a tube bulb. The bulb measures 30cm in size, including the thread, while the shade reaches a maximum of 25cm due to my printer's capabilities. Printed with translucent PETG, I chose this material because it has a higher melting point than PLA. However, since my 6W bulb doesn't produce excessive heat, PLA would likely work just as well in this instance. To maintain the integrity of the pattern, I deliberately omitted holes from the shade part during printing. Instead, I drilled them afterwards to prevent any distortion that might occur at those points. Additional materials needed include two M4x10 screws and nuts. For anyone interested in modifying these parts, SCAD files are attached for reference. Please note that the thickness of each part is optimized for a 0.6mm line width, as detailed in the accompanying notes.