For a frustration-free dosing experience, whether you slow feed or dose all at once, upgrade your Timemore Sculptor 064 or 064S with my 3D-printed single dose hopper. The most important feature it provides is an effective anti popcorn design and pairing with my optional custom silicone bellows will help you get precisely what you put into the grinder for each dose, up to 0.0g retention on each grind*, all while aesthetically matching the grinder. Adapted from the hopper I made for its bigger brother, the Sculptor 078/S, it features all the same features. Features (New updated design as of April 24th, 2026) (New photos of most current version will be uploaded soon. Current photos are of launch version) Reliable Anti-Popcorning. Whether you dose all at once or slow feed, the beans and fragments stay within the hopper and flow into the grinder. Matching Aesthetics. The single dose hopper replaces the original stock hopper while maintaining its cylindrical aesthetic motifs, with a textured outer surface to match the grinder's surface. Strongly Anchored. Simple installation uses both stock screws (not included) to securely attach to the grinder, taking just a minute or two. Also makes use of the stock silicone screw hole plugs (not included) to plug up the screw holes. Optional Bellows. While the grinder's Rotary Knocker is already very effective at reducing retention, my custom silicone bellows can take it a step further to help bring that retention down to 0.0g* when both are used. Compact Design. All the critical features listed above, condensed into an optimally small form factor. O-Ring Seal. Built-in groove at the bottom of the hopper with a silicone o-ring for an extra effective hopper seal. Included Lid. Helps keep the hopper dust free, like when left for an extended period of time. Lid can cover over the bellows if there is one sitting in the hopper. Important Note About Screws The hopper is compatible with the two stock screws supplied with the grinder. However, these screws are relatively easy to strip, so please take extra care when removing and reinstalling them. For reasons unknown, the stock screw heads have a slightly square profile, which can make them a very tight fit in the hopper's screw holes. The holes cannot be enlarged, as they are also designed to securely retain the included silicone plugs. Use a screwdriver that matches the screw head precisely. Do not over-tighten the screws. Because the stock screws are prone to stripping, purchasing spare screws is recommended. If a replacement screw is needed, use an M2.5 screw with a length between 6-7 mm (stock screw is 6.7mm). The screw head should have a diameter of less than 5.0 mm to fit properly within the hopper. You can also get replacement screws separately here Compatibility Timemore Sculptor 064S (Gen 1) Note: Will not work with the anti-static/anti-popcorn metal piece between the hopper and the grinder, so it will need to be removed during hopper installation (Optional silicone bellows is 100% cross-compatible with Niche Zero and Duo and several other INTROVERT Single Dose Hoppers) Not compatible with Sculptor 078 series (separate listing here) Not confirmed to be compatible with Gen 2 Tools Required For Installation Small diameter (under 4.5mm) phillips 1 tip screwdriver. Make sure the tip matches exactly. Subpar Bellows Option These bellows will have a pronounced distorted form, and possibly other surface blemishes, but they otherwise are fully functional. Although some of the openings of the bellows may look far from circular, they will conform when placed into the hopper. See an example of subpar here Adding Optional Bellows Later If you already own the hopper and would like to add the optional bellows, you can purchase it separately here: Silicone Bellows for INTROVERT Single Dose Hoppers *Disclaimer In some situations like listed below, retention may vary from 0.0g-0.2g Grinding after cleaning the insides of the grinder will cause more retention for