Spacer Library | M2.5 to M6 (25 Heights Each)

STL's are availbine to download individual Spacers

Tired of waiting for nylon spacer kits to arrive in the mail or trying to cut down longer hardware to fit your projects? This is the Ultimate Precision Metric Spacer Library , fully optimized for the Bambu Lab A1 Mini and all larger Bambu printers!

This collection includes exactly 25 precise heights for the most common electronics and small mechanical screw sizes: M2.5, M3, M4, M5, and M6 . Every model features pre-configured engineering tolerances (+0.3mm to +0.6mm clearance on the inner diameter) so your metal screws slide cleanly right through without snagging or forcing, even when printed with a standard 0.4mm nozzle.

📐 The 25-Height Grid Included for EACH Size:

- 1mm Steps (Micro-adjustments): 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm - 2mm Steps (Mid-range): 17mm, 19mm, 21mm, 23mm, 25mm - 5mm Steps (Structural Extension): 30mm, 35mm, 40mm, 45mm, 50mm 🛠️ Exact CAD Blueprint & Technical Dimensions

If you are incorporating these into your own models, these are the exact physical dimensions used in this kit:

Size Inner Diameter (CAD) Outer Diameter (OD) Main Target Uses

M2.5 2.8 mm 5.5 mm Raspberry Pi, micro-drones, small PCBs

M3 3.4 mm 6.5 mm Arduino, PC motherboards, 3D printer frame mods

M4 4.5 mm 8.5 mm Small robotics, custom mounts, structural frames

M5 5.5 mm 10.5 mm 2020/2040 Aluminum extrusion slot hardware

M6 6.6 mm 12.0 mm Heavy mechanical linkages, workshop jigs

- Material Choice: PETG or ABS/ASA are recommended for functional mechanical strength or high-heat environments, though PLA/PLA+ works excellently for basic desktop electronics mounts. If you found this library useful for your workshop, please leave a ⭐⭐⭐⭐⭐ review and post your makes!

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