FreeSieve (3mm diameter holes, customizable)
Thingiverse
868 model
Free
FreePSU Bracket with 3mm holes
Thingiverse
FreeCabinet handles 3mm holes
Printables
Freesmall bit holder 3mm holes
Thingiverse
FreeBox w/ 3mm x 3mm magnet holes + printable inserts
Printables
FreeFlange Mount for 3mm Wire (M4 Holes)
Printables
FreePush Fit Rods for 3mm & 5mm Rod Holes
MyMiniFactory
FreeLow profile Shelf 170x150 3mm Adjustable holes
Printables
Free2020 V-Slot 90 degree corner plate 3mm holes
Thingiverse
Free2020 V-Slot T-Plate 3mm holes
Thingiverse
FreeExtrusion Bracket 90° (30x30x20mm / 5.3mm holes - M5) for Bosch Rexroth 20mm Extrusions
Thingiverse
FreeNema 17 bracket (holes centred 6mm face-plate now 3mm)
Thingiverse
Free2020 V-Slot T-Plate with none middle slot and 3mm holes
Thingiverse
FreePTFE Passthrough Plug for 19mm (3/4) hole into 3mm (1/8) plexi
Printables
FreeGasmask NATO Thread flow restrictor 3mm hole
Printables
Free3mm Ikea Pax Hole Cover
Printables
FreeG2T Pulleys Assortment 3mm hole to 22mm
Thingiverse
FreeCalibration Cube 20mm with 3mm hole
Printables
FreeHoles for Screwing Into - 3.2 mm to 3.6 mm
Printables
FreeMonoprice MP Select Mini V2 Flexible Filament Guide v2.6 - 3.5mm base, 3mm feed hole
Thingiverse
FreeLightsaber 1.25in / 31.3mm chassis Holds GHV3&18650
Thingiverse
FreeHoles for Screwing Into - 3.2 mm to 3.6 mm
Thingiverse
FreeY axis corner with fixation pad ( 3mm wood screws) ziptie hole
Thingiverse
FreeHeadphone hook with 3mm cable hole
Printables
FreeBowden Tube Clip with 3mm hole
Thingiverse
Free4x 3.5 inch hard drive cage on 140 mm fan mount (Extra holes for Masterbox Q300L/Q500L)
Printables
FreePC fan cover 120 mm, 3 mm diameter holes
Printables
FreePixel Watch 2 & 3 charger w/ cable winder and plug mount (USB-C & USB-A) with 10x3 mm magnet holes
Printables
FreeHold down bracket with 3mm screw hole for Anet A8
Thingiverse
FreeSticky Note Holder with Pen Holes - for 76 mm / 3 in Notes, No Supports (OpenSCAD)
Printables
FreeFiling Cabinet Handle 100 mm centre 3.6mm holes
Printables
FreePrintrbot Original Support Fan Cone 40 mm 3 holes
Thingiverse
FreeFan 40x40x20 Sunon clip on 3mm thick plate with 4mm hole
Thingiverse
FreeDelta effector. 3 mm holes.
Thingiverse
FreeVertical Wind Turbine 3mm hole for generator toy
Thingiverse
FreeTUSH rails with 3mm hole
Thingiverse
FreeGT2 Pulley Set 16, 20, 25, 50 and 80 tooths, five hole sizes.
Printables
Free2 inch RC airplane wheel with a 3 mm center hole.
Thingiverse
FreeIkea Pax/Komplement/Metod cabinet 5 mm hole dowel for 3 mm screws
Printables
Free3 mm hole clearance test
Printables
FreeFan Blade 110 mm, 3 mm hole
Thingiverse
Free30° Angled Multiboard Hook for a 3.7 mm Tool Hole
Printables
Freecd wheel adapter with 3.4 mm hole for bamboo skewer
Thingiverse
Free3 kg (or less) spool holder, 45-80 mm center hole, 608 bearing
Thingiverse
FreeSUNLU Spool reducer 3.0 (hole reducer) 73 x 26 mm
Thingiverse
![Minimalist Ender 3 X Axis Tensioner Belt Alignment Fix +5 mm [right side]](https://media.printables.com/media/prints/201ce716-1b4f-4220-a2be-800f296e04a6/images/13964863_7c5fcc76-9864-48ce-8f80-026c47015070_986b5128-40ee-4ae8-a93d-99e4506b4aad/thumbs/cover/640x480/jpg/ba07096e-e962-4d1a-a92b-18a11f7920c1.webp)
FreeMinimalist Ender 3 X Axis Tensioner Belt Alignment Fix +5 mm [right side]
Printables
FreeQidi Q2 Sealed Poop Chute Bin - 3mm magnet size
Printables
FreeQIDI Plus 4 Idler Pulley Shim 0.3MM
Printables