eSun PLA Dry-ish Box kit

Inspired by my inability to find a suitably sized (and priced) sealed container of late, I designed this to fit the standard 1kg eSun filament box. The kit includes an insert through which you can feed a standard 4mm PTFE tube, and optional rollers to aid in smoother feeding. As eSun doesn't provide resealable bags, this is just a simple way to keep their PLA filament a little "fresher" without too much hassle with regards to using the material or reusing the container.

2x 608 (skateboard/fidget spinner) bearings or an equivalently-sized substitute are required for the rollers.

I should emphasise that this is not a proper dry box. I would not recommend using it to store nylon or any similarly hygroscopic material with the expectation that it will remain usable for any extended period. You could probably make it so with some duct and foam tape but that's beyond the scope of my intent.

NB As is the case for most of my uploads, the photographs are of a near-final prototype.

All gaps provide a total of 0.2mm of additional clearance. The bearing mounting posts are 0.2mm oversized, while the outer guides are deliberately set smaller.

A full set will consist of:

1x eSun Grommet 1-1

1x eSun Grommet 2-2

4x eSun Rollers 1-3 (2 must be mirrored - they are not universal)

2x eSun Rollers 2-3

4x eSun Rollers 3-3

You may need to use a 4mm drill bit to clear the inlet before you can successfully feed the PTFE tube. This is deliberately not oversized to aid with making a better seal, despite knowing full well the rest of the container will not be sealed.

The rollers will work positioned either horizontally or vertically with no appreciable difference between the two. Position them against whichever side you want to use as the bottom.