9x3.5 A1 Mini Gridfinity Bin 3U Dovetail Split Fit

A standard 9x3.5 Gridfinity bin that actually fits on smaller printer beds, thanks to a clean, strong dovetail split with built-in alignment tabs.

See my other models for more sizes. If you need any specific size, ask in the comments and I should be able to make one fast.

This model is a 3-unit-tall Gridfinity bin (~24.8mm tall), split into printable sections so it fits cleanly on the Bambu Lab A1 Mini, and I also included a Bambu Lab P1S profile for anyone printing on a larger bed. I've added alignment tabs along the split so the sections self-register during assembly, keeping the sides perfectly aligned and helping prevent side-to-side movement.

This was a user requested size.

Every model includes both a tight profile and a loose profile. I prefer the tight version because it is very snug and doesn't move. The loose version is there for anyone who wants easier assembly and disassembly or whose printer runs a little looser on tolerances.

Features

• True Gridfinity standard sizing
• 9x3.5 footprint
• 3 units tall to fit more items (~24.8mm tall)
• A1 Mini and P1S profiles included
• Tight and loose dovetail fit options
• Dovetail split for strength with alignment tabs
• Prints flat, no supports required
• Works great with PLA, PETG, or ABS

Perfect For

• Long tools
• Electronics parts
• Desk organization
• Modular drawer systems
• Zip tie storage
• Chip clips

Printing Instructions

Recommended Settings

• Layer height: 0.2 mm
• Walls: 3-4
• Infill: 10-20% (Gyroid or Cubic)
• Supports: None
• Brim: Optional (only if your material tends to warp)

Assembly

• Dry-fit first
• Start with the tight profile if your printer is well tuned
• Use the loose profile if you want easier removal or your machine prints slightly oversized
• Glue is optional, but CA glue or a plastic-safe adhesive works well if you want a permanent assembly

⭐️ If this model helps, boosts are hugely appreciated and help others find this set of split Gridfinity bins.