Herb Grinder ROPI with Stash Chamber V3

⚠ Note: This is the third version of the ROPI grinder. It introduced reinforced durability, stronger magnet holders, and a brim variant for tricky print beds. If you want the latest and fully refined version with even smoother grinding, logo options, and overall polish, check out 👉 Herb Grinder ROPI with Stash Chamber V4.

This version focused on durability and print reliability.
Based on user feedback from V2, the magnet holders were strengthened, the locking tab redesigned, and a variant with an integrated brim was added to help with bed adhesion.

Why ROPI Grinder Stands Out

• This is one of the best 3D-printed grinders you can get!
• Developed and tested daily since August 2022
• Magnet-based design that feels amazing and works flawlessly
• Comfortable to grind with smoother edges and improved locking
• Top chamber for convenient stash storage
• Durable — all parts reinforced to last and resist impact
• Easy to print — standard model prints without supports; brim variant helps on tricky beds

Key Features of V3

• Reinforced magnet holders on both top and bottom parts for stronger fit
• Thicker center circle on the middle part for added durability
• Redesigned locking tab to prevent accidental separation during use
• Optional variant with integrated brim for better adhesion if your bed struggles
• Magnet-based design for secure closure and smooth handling
• Three compartments: grinding, ground material, and top stash chamber

Printing Recommendations

• Material: PLA or PETG (both work well)
• Layer height: 0.2 mm
• Infill: 20%
• Supports: Not required
• Variants: standard model or brim version for adhesion help

Parts to Purchase

Neodymium magnets 5 mm × 2 mm (10 pieces)
You can buy them at a local store or order online (e.g., Amazon) for example here.

Clean-Up & Assembly

• Clean surfaces with an iron brush
• Use a heat gun to remove stray threads
• Trim imperfections with a scalpel or knife

Inserting magnets:

• Use a screwdriver with a flat bit surface
• Attach the magnet to the screwdriver tip
• Apply a small drop of glue
• Push the magnet into place while holding the handle of the screwdriver

Something to Keep in Mind

This version is stronger and more reliable than V2, especially for heavy daily use.
However, V4 further improves fit, grinding performance (new shape of holes), and aesthetics with its refined top cover and logo insert.

For the best experience, check out the latest release:
👉 Herb Grinder ROPI with Stash Chamber V4

Community & Licensing

• If you like this model, please download, test, and leave a comment (I read and reply to all of them). A like is also very appreciated!
• Remixing and personal use are allowed.
• For any commercial use—such as events, branding, or resale—please contact: [email protected]
• We are also open to commercial partnerships to promote and sell the grinder.