Front Mounted CFS Desiccant Holder

26Jan2026 Update:

I received some feedback that the V3 larger volume holder was rubbing on the top edge.  So I trimmed 3mm off of the back edge to provide more clearance, and I made the lid tabs smaller to reduce the potential for them to contact the spools.

01Jan2026 Update:

I received some feedback that Overture spools may contact the original design.  So I revised the design to raise it up while making it a little narrower.  This should provide a little more clearance to the spools while actually INCREASING the volume by about 12%.  As always, please leave me a message if there is an issue with the design or a suggested improvement.

Also, please consider the following roller mod to help ensure that spools stay in position better.  This adapts well to a wide variety of spool sizes.

https://www.printables.com/model/1326007-cfs-roller-mod-remix-for-standard-hardware

Original Description:

I wanted to added more desiccant to my CFS to keep it drier longer.  I already have a large holder in the rear of the unit, but I wanted one in the front as well.  I found a couple designs on Creality Cloud that located one there, but there were things I didn't like about each of the designs. So I made my own from scratch to improve on the concept.  My goals were:

• Be able to load and unload the filament without removing the desiccant holder.  This meant having access to the release lever for each of the slots.

• Maximize the amount of desiccant that could be stored in the holder.

• Allow the holder to be secured and released using velcro or similar restraint.

• Allow as much airflow as possible while being structurally sound and resistant to bending.

I printed mine in PETG, but I think any filament should be fine since the CFS isn't heated.  I also use activated alumina as my desiccant and the results are impressive!

Let me know if anyone has any ideas on how to improve this concept.