"Holy Grail Filament Dry Box" Extended Lids

Update Apr 16, 2026:

Had a couple of requests to add to a couple of other versions of the lids. First, one without holes, which I'm not sure is necessary since the plugs were added. The second was to make a 45-degree 9.25 mm hole version.

Update Feb 11, 2026:
 

If you are looking for a roller that fits the Dry Box, I've just published one…

https://makerworld.com/en/models/2385796-roller-base-for-holy-grail-filament-dry-box#profileId-2612979

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I've found that 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