Husky 12 Gallon Dolly Locator

I use the Husky-brand 12-gallon gasket boxes available at Home Depot in North America for storing filament, as they neatly store up to fourteen 1kg spools with little wasted space, and seal very well, keeping all of my filament dry year-round.

I really like dollies for stacking bins like this, but I was annoyed by having to use larger dollies that allow me to see where I'm putting the bin as I'm putting it down, as the shape of these containers is such that they're wider on the top than their actual footprint requires.

So, this is a locator that attaches to the Anvil-brand 18-inch wooden dollies also sold at Home Depot. With four of these installed per dolly, I'm able to blindly and reliably place a container on a smaller 18-inch dolly that more closely fits the footprint of the container but would otherwise be impossible to see and tedious to locate accurately.

I am still careful when placing heavily-loaded containers on the dolly, not just dropping the container and relying on these to bear the container's full weight, as I'm not sure they would. But, the dollies usually slide themselves into place as I gently lower the container down, as long as the ground below allows the dolly to move easily. Overall, they work well for their purpose and keep a tall stack of at least four containers aligned and secure, even when moving the dolly slowly on a smooth floor by gently pushing higher containers on the stack.

This model has separate left/right versions so that it more closely fits the recess in the 12 gallon containers given the width of the attachment area. So, for each dolly, you'll need two left and two right locators. See the photos to see how they are meant to be installed.

I included a hole for adding a small M2 wood screw to keep them from sliding along the dolly after installation. I did end up installing those myself, as I have many of those screws, but I consider them optional, as the carpeting holds them in place even without screws.

Disclaimers:

• I suspect that different dolly brands, or even different manufacturing runs of the same brand, might vary enough in size to make this model incompatible with your dolly. (Though, I bought my dollies a few months apart in the midwestern United States in 2025, and they all fit equally well.)

• This design depends on bending the very thin portion to install it around the wood of the dolly, so materials or print settings that produce a brittle result might not work. I used PETG with settings that I know to produce a reliably flexible result, but I don't know how well PLA or a more brittle PETG would work.

So, you might want to measure beforehand, and/or test printing and installing a single locator, before committing a lot of time and filament to printing a full set for your dolly.