KID'nR - Keep It Dry ... and Rolling! (Silica Gel Box)

You like your filament dry ☂. And yes, there are some silica gel boxes out there already. But most of them are a bit too generic are lacking features like a hollow core … … or a bearing mount option to work as a filament roller. 😍 And last but not least, some are missing the final touch for a cool look and feel (and we all know that this is what really counts). 😎 Here it is, the KID'nR , my approach to rule the spools! … for Spools with an inner core diameter of 51-56mm It's not meant to be generic or to print fast, but it's designed to be sturdy and fit the spool perfectly , based on a fully parametric design , with all the bells and whistles like accent-color spacers and automatically generated text labels . Get the perfect fit for your spool. Leave a ❤ Like if you actually like and use this model. It helps to get some Prusameters for the filament that is needed for all the test prints while creating models to share with you! PRUSAMENT Open Print Tag Spool Upgrade: You already have the KIDnR in use for your PRUSAMENT spools? No need to reprint everything but just use the PRUSAMENT-2-OpenPrintTag Adapter Spacer and you are good to go! Check the files section for the new PRUSAMENT Open Print Tag spool. Related Models 📷 Image redacted — claim this model to add your own media The “Big Brother” - KID'nR XL All the features as the standard model but now for spools from 56mm - 90mm inner core diameter. 📷 Image redacted — claim this model to add your own media The very reason I spent the time on this model was to have the bearing based filament roller option and to use it in my PolyDryer boxes . And here it is: The PolyRoller 🥳 📷 Image redacted — claim this model to add your own media And here it is - finally - the must have wall mount for your PolyDryer: Featuring an addictive snap-in mechanism! Check it out: The POLYmount 😎 Box Variants and Features It might look a tiny bit confusing at the very beginning, as you have different options to choose from. But don't worry, you will get it. 1. Three Canister Types Standard: Core: Roller: 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media Standard : Not much to say, fill it with Silica Gel and your are good to print. Center Core : A bit more air circulation around the silica gel; some filament spools heavily obstructs the airflow on the outer surface of the canister and the core helps to get the required airflow. And it still holds quite a lot of silica gel. Roller: That is why I actually designed this model: Using two MR1482Z bearings (the ones that ship with the PolyDryer), it will give you a perfect, smooth, low resistance rolling experience of your filament spool in your dry box while providing storage capacity for the silica gel. And all you need is a simple mount for an 8mmm axle, that keep the spool in place. Check out the PolyRoller (coming soon) which does exactly this for the PolyDryer from PolyMaker. Be warned: The spool will roll not only smooth but almost friction free! Check the PolyRoller's adjustable break to control the resistance to your liking. 2. Top and Bottom Caps and Spacer Options So you have chosen the canister type, let's look at the top / bottom options: Standard Cap and Lock: Slim: Grippy: 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media Standard Cap (for the top) and Lock ( for the bottom) : It comes with flanges and combined with cool looking spacers that you want to print in an accent color . You can use it with some color code in mind (Orange for Prusament, Teal for Polymaker, Silver for Filamentum… you got it), so you can easily see what is loaded… and it helps to grab the correct KIDnR version when loading a new spool. Slim: These come without the flanges for a minimal foot-print, not adding any mm to the diameter of the canister. It's a bit more tricky open them if you need to, but it's doable. And you asked for a slim version, so here it is, e.g. to use it inside a vacuum bag. The bottom part is optional, but it protect the thread and it just looks cleaner. Grippy: Also no flanges, but this time easy to handle. but will add a bit to the outer diameter. A good stand-alone solution if you do not want to put it inside a spool. 3. Hygrometer Caps 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media Finally, the Hygrometer Cap : The special one 🥷 which adds a hygrometer to your box. Available in all variants (Standard, Slim and Grippy) and always for the Standard Canister (!) . The Little Details All the canisters, caps, lock rings are labeled, with diameter, height and filament name, so you will be able to find the correct one if there are many of them flying around in your space. 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media 📷 Image redacted — claim this model to add your own media Diameter: The outer diameter that should match the inner core diameter of your spool. Height: The height of the canister including cap and spacers, i.e. “edge to edge” (and not the height of your spool!) This value can be important if you use the roller variant in a dry box and need to keep the spool precisely in place. Check the PolyRoller and you know what I mean. Files, Parts, Prrinting and Assembly 1. File Structure For a precise fit there is a specific version for each spool organized in folders. Go to this folder in the files section and you will find all the files you need (and check above what canister type, cap, lock ring, bottom and spacers you want. 2. Parts Hygrometer: The “standard” 45mm one ( Amazon ) Bearings: MR148ZZ bearings (shipped with PolyDryer) ( Amazon ) 3. Print Settings Material: PLA does work, PETG is preferable, but if you put it inside a heated dry box go with ABS, ASA or similar Perimeters: 5 Infill: 40% Support: in general No Only for the roller version: You maybe want to support just the area where the MR1482Z bearing sits. In all my prints it worked perfectly without , but it depends on your printer and settings if it might be preferable to put a tiny bit of support to this area. Make sure to print some parts in accent color as you like, i.e. the spacers and the grippy parts. 4. Assembly For the roller version, carefully press in the MR1482Z bearings in the Canister and the cap Clip in the Spacers Fill it with Silica Gel Close the canister with a Cap, … put the canister into the filament spool … and attach the Lock Ring to keep things in place Supported Spools Here is the list of spools currently supported / tested, with some comments if required: 3D Jake ID 52.0 L 75.4 Black Spool Amazon Basics ID 54.0 L 75.0 Black Spool Ambrosia ID 52.0 L 63.0 Cardboard Spool Bambu Lab Reusable Spool ID 54.8 L 65.2 Requires two additional adapters that you will find in the directory. Ekegoo ID 53.0 L 64.0 Cardboard Spool eSUN ID 53.0 L 63.2 Cardboard Spool Extrudr ID 52.0 L 66.8 Transparent Spool - 750g Fillamentum ID 52.8 L 54.8 Transparent Spool - 750g Prusament ID 51.2 L 67.4 Standard Spool - 750 - 1000g Prusament OpenPrintTag ID 51.2 L 64.5 OpenPrintTag Spool (2025+) - 750 - 1000g Polymaker ID 55.4 L 64.0 Cardboard Spool Protopasta ID 52.0 L 55.0 Cardboard Spool Sunlu ID 54.8 L 68.0 V3 Spool (Released in 2025) Requires two additional adapters that you will find in the directory Your spool is not listed / does not fit? Just drop me a message with the inner core diameter (measure both sides, they might vary), the spool height at the center and the name of the spool for the label. I will create the STLs and add them to this model. All I ask you for is to provide some feedback after you printed it to be sure that it all fits nicely. Please also note, that your spool might be the same as used by some other brand. So check the parameters in the list of supported spools, and also check the OnlySpoolz database. CAD Files and Customization 📷 Image redacted — claim this model to add your own media The model is made with Fusion 360 and it's a parametric design. So you can easily create all the files for your specific spool by just entering the respective values to the parameters in the “Favorites” section: spoolCoreDiameter : The inner core diameter of the spool. It must be within the range of 51-55mm spoolHeigh t: The height of the spool at the center core. spacerHeight : The thickness added by the spacer; do not go below 1mm cannisterLabel : (Yes, I am aware of the spelling error, and maybe I will fix it in the next iteration) The text label on the canister; the value is taken from the “Comments” field! For Fusion 360 to be able to modify the model, you will need to install the following: Google Font: Play Thread Definitions: Fusion-360-FDM-threads Fusion 360 Plugin to manage the FDM treads: ThreadKeeper Fusion 360 Plugin to allow for parametric text values: ParametricText Before you start: The ParametricText plugin in such quite complex models has a big downside: It will take forever for Fusion 360 to update all the bodies after you changed any of the parameters. If you change them, grab a coffee and let Fusion do its job, it will be unresponsive, eventually show a black window, but it will do everything just fine. When you work on the model itself the plugin should not get into your way (as long as you do not change the parameters). If it does, you can disable the plugin and enable it again when you are done with your changes. Some hints: If you open the Fusion 360 file, all bodies are oriented for 3D printing. Check the timeline and you will find the elements to activate / deactivate to have everything arranged correctly. You can export all bodies at once by selecting the root component for export; select one body per file. … and don't forget: Have fun 😎 A final remark: If you are improving the model: Post a Remix! … and I am always happy when I see this 😍. That's why I share my CAD files. But if you are only changing the parameters to fit a specific spool, drop me a message and I would like to add it here. Not only does it help me, but it also helps users find the right model. Attribution Many thanks to @kennyd1gital who made the Filament Spool Desiccant Canister and provided the me the Fusion 360 file, and of course to @Malolo and @gdrag for the initial designs remixed by kennyd1gital. This made it a really quick start and easy to extent the model with additional features and some optimizations without the need to optimize the threads, spacing, and the canister's design.