Great design, great print. Best to print the tip with supports. I used the print pause feature in Cura to change the filament color. That way you don't need the graphite tip file. I printed with a 0.28 layer height, with 15% infill, mostly with eSun PLA+ filament. Total print time was about 9.5 hours.
Printed on Creality Ender 3 Pro
Contribution to Pencil pencil case