Widened Sunlu Refill Spool (male side only) 3D model thumbnail

Widened Sunlu Refill Spool (male side only)

by agenthex · via Thingiverse
FormatSTL
CategoryOther
LicenseCC BY-NC
UploadedMar 21, 2026
⬇ 4 downloads 👁 28 views

Description

This object is [the smaller] half of the Sunlu refill spool. The Z-axis is extended to allow for the wider Sunlu/Bambu spool refill packs. It is also designed to be as minimalist as possible (weighing 36.6g at 100% infill, with supports; closer to 30/31g with tighter settings). I made this before finding this adapter ring: https://www.thingiverse.com/thing:7081902 I have not printed the ring yet. The biggest differences are the wheel and spokes (obviously) and the fact that my design will keep the cardboard cylinder centered in the spool. If I revisit this design, I will attempt to eliminate the outer wheel and spokes while retaining the supports for the cardboard itself. My prototype version had vertical spires that met near the other end in a ring, but it failed during printing (supports omitted because it was designed with the intent to print without them), and when I broke off the partial spires near their base, the remaining base of the spires proved to wedge into the cardboard well enough to grip very snugly. So I leaned into it and made this version.
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Originally published on Thingiverse