[Updated drag-reduced version] Modular Open Spool Roller Rack (Front-in, Rear-out, Connectable to BMcu)

The version with a built-in PTFE tube has been released, which effectively reduces resistance. Feel free to download and print.

The assembly order remains unchanged. After assembly, insert a PTFE tube of sufficient length from the rear pneumatic connector until it emerges from the front.

A simple and elegant open filament rack

Please make sure to read the following instructions before printing, as I am not responsible for the waste of filament and time caused by not having prior knowledge of the parts and time cost involved in making this filament rack:

  As I frequently need to change filaments of various colors and own an industrial dryer, a closed filament box is meaningless to me and very inconvenient for changing filaments. Therefore, I designed this open filament rack, suitable for friends who own a dryer or live in dry climates

  It requires a significant number of hardware parts, which serve as connectors and also allow the exposed metal parts to act as embellishments to enrich the model's details and texture. Please carefully consider if you can accept the tediousness of purchasing parts and assembly before printing

  Four filament racks occupied size reference:

Horizontal width 35cm, longitudinal width 22cm, height 25cm. This size already includes the minimum radius required for the rear PTFE tube bend (conservative estimate, actual can be slightly smaller) and the minimum clearance required to remove filament from above (if placed on a shelf with a partition on top)

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【Parts List】

Complete 4-in-1 filament rack:

Hexagonal aluminum/copper column length 16 x16

(Hexagon opposite side length 4.6)

Round single-head aluminum pillar M3x30+6 x16

(+6 is the length of the threaded portion)

Miniature bearing inner 3 outer 9 thickness 5 x32
Flat head M3 hex socket bolt length 35 x16
Flat head M3 hex socket bolt length 5 x16

Cup head M2 hex socket bolt length 10 x8
Cup head M2 hex socket bolt length 6 x16
Hex socket counter-locking bolt M2*4 x20 (pair)
Air tube connector PC4 M6 x4

PTFE tube of appropriate length (for external connection of filament rack)

Single filament rack (Note that not all parts are simply divided by 4):

Hexagonal aluminum/copper column length 16 x4

(Hexagon opposite side length 4.6)

Round single-head aluminum pillar M3x30+6 x4

(+6 is the length of the threaded portion)

Miniature bearing inner 3 outer 9 thickness 5 x8
Flat head M3 hex socket bolt length 35 x4
Flat head M3 hex socket bolt length 5 x4

Cup head M2 hex socket bolt length 10 x2
Cup head M2 hex socket bolt length 6 x4
Hex socket counter-locking bolt M2*4 x8 (pair)
Air tube connector PC4 M6 x1

PTFE tube of appropriate length (for external connection of filament rack)

【Assembly Instructions】

  I'm a bit busy, I will add text instructions later when I have time, please bear with me. If you have any assembly questions, you can send a private message or comment to communicate.

  You're smart enough to assemble it just by looking at the pictures, right :)