"Holy Grail Filament Dry Box" Extended Lids

Update Feb 11, 2026:

If you are interested, I've published rollers for the Dry Box

https://www.printables.com/model/1578015-roller-base-for-the-holy-grail-filament-dry-box

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I found the “ Holy Grail Filament Dry Box ” is a great storage box, but I decided that I wanted to be able to feed the filament directly from it. To accomplish this, I created new lids that increase the height by 25 mm. You can use commercial or printed rollers that are compatible with the flat version of the box.

Additionally, I am developing a roller for the E1 version of the box that accommodates the cones protruding from the bottom. Since I own an E1, I'm motivated to create them, as none of the current printed or commercial roller versions will work. I want to conduct more testing before releasing them, but I thought you might find these lids useful if you're using the flat version of the box.

The 45-degree lid version features a 4 mm hole for a standard PTFE tube and is designed for setups where the feed needs to go up to reach the printer. I do not recommend this lid for machines that are level or lower due to the risk of bending. For level or slightly lower setups, please use the 90-degree version.

I have created two versions of the 90-degree lid: one has a 4 mm hole specifically for the tube, and the other has a 9.25 mm hole for use with a pneumatic quick-release (PC4-M10) to run the tube through. I personally mounted the quick-release on the inside since I kept pushing the tube into the box. I found that the 4 mm holes are actually a tight fit for the tubes, so there is no need for the quick-release to hold them in place.

Note: You may need to drill out the 4 mm holes to accommodate the tube.

I know, what about the single box version? I don't use the single-box version, but hey, the STLs are available, have at it.

PC4-M10 - for reference - Amazon , AliExpress