KEXCELLED Cardboard Spool Adapter by AU3D

AU3D

3D Printer>3D Printer Accessories

Print Profile(2)

All

P1P

P1S

X1 Carbon

X1E

200mm Diameter | Flat | Full AMS Compatibility

Designer

19 min

1 plate

5.0(1)

200mm Diameter | Rounded | Read Compatibility Section

Designer

20 min

1 plate

Boost

Released

Description

Key Advantages

Only 7g of filament per ring.
Compatible spool brand name impressed.
Rounded contour helps with traction, avoids pullback errors and stabilizes the spool inside the AMS.
Rounded contour lowers the chance of damaging plastic storage bags.

Update

01.03.2024: I updated the geometry to provide a better fit, especially in regards to the width of the cardboard.

29.03.2024: Another geometry update to provide a tighter fit.

Description

This isn't merely a typical cardboard spool adapter. By decreasing its contact area by approximately 50-60% compared to standard adapters, it significantly enhances contact pressure. Consider it akin to winter tires on a car, which generally require higher pressure to minimize their contact area with the ground. Additionally, its rounded edges help stablizing the Spool inside the AMS and minimize the likelihood of damaging plastic vacuum bags. The adapter is not only lightweight, weighing a mere 7 grams of filament, but it is also reusable and easily attaches in the same manner as conventional adapters.

This adapter has proven to be a game-changer, eliminating the need for other AMS modifications that claim to address retraction and entanglement issues. Remarkably, I’ve found that spool weights are no longer necessary. However, as with any solution, individual results may vary. Happy printing!

Tolerances

Compared to plastic spools, cardboard spools are more vulnerable to various external factors, such as moisture, temperature fluctuations, and variations in the production process (up to +/-2mm). Consequently, you may encounter slight variations in the fit, which can range from slightly looser to tighter. In extreme cases, the spool adapter may not fit at all. In these scenarios, you can make the necessary adjustments to the model's scale using the Bambu Slicer for both the X and Y axes. Ensure that you uncheck the "uniform scale" option before proceeding. If your spool's diameter exceeds the default setting, consider increasing the scale by 1%. Conversely, if your spool's diameter is smaller, reduce the scale by 1%, and your setup should be ready for use.

Compatibilty

kexcelled eSun Cardboard Spools tend to be on the larger side of the spectrum. While they can fit without an adapter, when paired with the rounded adapter, they surpass Bambu Labs’ specifications. Consequently, users have a couple of options to address this:

AMS Lid Spacer: Utilizing a spacer for the lid can accommodate the larger spools effectively.
Custom Backside Rollers: Alternatively, consider implementing custom backside rollers specifically designed to support these larger rolls.
For a straightforward solution, leaving the lid open (or at least not locking it) provides ample room for the spool.

For individuals who prefer not to alter their AMS and wish to close the lid, I have incorporated a nearly flat variant that aligns with Bambu Labs’ specifications.

Printing

When it comes to printing, you should produce two adapters for each cardboard spool. It is advisable to steer clear of materials that exhibit low friction, such as Silk-PLA, to ensure optimal performance. Most of the time I use Standard PLA.

Other Filament Brands

This adapter is available for other brand's cardboard spools (Link to Collection):

Comment & Rating (2)

@makoshark3

Print Profile

200mm Diameter | Flat | Full AMS Compatibility

Went with the flat version. Fast print, low filament usage, perfect fit. And it works... Thanks!

@frankieorabona.

The print profile is no longer public

The adapter slips and is too tight. I first printed in PLA but it always slipped and caused the filament to get stuck, but after a couple of uses trying to insert it immediately split. I then tried printing it in TPU to get better adhesion in the AMS and have more elasticity, but it turns out to be too low and especially too tight.

No more

License

This work is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.