Free custom STL files and 3D models for 3D printers

Tube junction ⌀50 mm to ⌀40 mm in STL 3D format. Length of this coupler is 50 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a length of 20 mm, the smaller one of 20 mm as well. The ends have a fillet to facilitate the connection of the two tubes.

Download this 3D file of a bowl in STL 3D format. This bowl can be used for sorting small parts in a workshop or on a desk. The shape is wide, with a internal height of 90 mm, a internal diameter at the top of 75 mm, and a internal diameter at the bottom of 40 mm. The total height is 92 mm.

Rectangular-base box with a lid provided as a STL 3D file. Overall dimensions are 84 mm long, 45 mm wide, and 20 mm tall. The box features thin 2 mm walls. Interior and exterior edges are rounded. A small clearance is included to ensure a precise fit between the box and the lid. The internal dimensions, excluding rounding, are 80 mm × 41 mm × 16 mm.

Get this circular box model in 3D STL format. Its diameter is 134 mm and its total height is 20 mm. The wall thickness is 2 mm. A fillet located at the bottom of the box makes it easier to grip objects.

File in STL format of a round-to-rectangular tube adapter with an external diameter of ⌀250 mm and a rectangular section with internal dimensions 250×150 mm. The shell thickness is 3 mm and the total length is 165 mm. The adapter has an offset of 15 mm along the Z axis. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.

3D file of an angle bracket with a central reinforcement in STL format. The dimensions are 153 mm in length, 203 mm in height, 25 mm in width, and 7 mm in thickness. The drill holes have a diameter of 6 mm. Chamfers are applied to the holes for a cleaner fit of the screws. The reinforcing bar enhances mechanical strength and includes two clearances for screwdriver access. This bracket prints without support, placed flat on the build plate.

Download this 3D file of a storage case in STL format. This model contains 5 drawers, arranged in 1 rows and 5 columns. In detail, this means 1 rows of 5 drawers. Each drawer has usable dimensions of 20 mm wide, 31 mm high, and 22 mm deep. The wall thickness is 2 mm. The drawers feature 1 divider each, which allows up to 2 compartments per drawer and up to 10 sections in total. The overall dimensions of the structure come to 134.5 x 37.5 x 28 mm. All the objects in this model were designed to be printed without support.

3D rectangular protective grid file in STL format. The overall size is 150x100 mm, with very large 10 mm cell size for maximum airflow. This grid serves as both a protective guard and a ventilation panel.

Download this 3D square honeycomb grid model in STL format. The overall size is 60x60 mm, with wide 8 mm cell size for optimal air circulation. This type of grid serves both protection and ventilation roles.

Tube fitting ⌀32 mm to ⌀19 mm in STL 3D format. Length of this junction is 65 mm. The thickness of the tubes is identical: 2 mm. The larger-diameter tube has a sleeve length of 35 mm, the smaller one of 20 mm. The ends are not rounded.

3D square protective honeycomb grid model as a STL file. Mounting holes are placed at the four corners (center-to-center 107x107 mm), each with a diameter of Ø5 mm. The overall dimensions reach 117x117 mm, with very large 10 mm cell size for maximum airflow. This grid serves as both a protective guard and a ventilation panel.

Download this STL file of a U-shaped furniture handle. The overall dimensions are 50×140×20 mm. The handle features a square profile combined with a softened transition. A light fillet produces a softer grip. The bores are 6 mm diameter with a center-to-center distance of 120 mm.

3D file in STL format of O-ring with ID (inner diameter) 9.6 mm by thickness 5.3  mm. The outer diameter resulting corresponds to 20.2 mm.

Download this fan guard file in STL format. Mounting holes are placed at the four corners (center-to-center 250x250 mm), each with a diameter of Ø5 mm. The overall dimensions reach 260x260 mm, with very large 10 mm cell size for peak ventilation. This grid serves as both a protective guard and a ventilation panel.

3D file of a round grille for air circulation in STL format. Its male diameter is 115 mm. The slats have an angle of 45° and a high thickness of 2 mm. This ventilation grille has a collar of 10 mm. The full diameter of this model is 135 mm.

Straight tube coupler ⌀125 mm to ⌀80 mm in STL format. Total length of this junction is 105 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 35 mm, the smaller one of 40 mm. The ends are raw.

Square grid model as a STL file. The overall size is 250x250 mm, with very large 10 mm cell size for maximum airflow. This grid serves as both a protective guard and a ventilation panel.

3D model of washer / gasket in STL 3D file format. This part features an inner diameter of ⌀3.9 mm and an outer diameter of ⌀6.9 mm. The total thickness is 4.3 mm. This part has no finish applied.

Straight tube fitting ⌀40 mm to ⌀37 mm in STL format. Total length of this connector is 118 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 38 mm, the smaller one of 40 mm. The ends have a fillet to make tube connection easier.

File of storage drawers in 3D STL format. This model features 6 drawers, arranged in 2 rows and 3 columns. Specifically, this means 2 rows of 3 drawers. Each drawer has usable dimensions of 25 mm wide, 25 mm high, and 35 mm deep. The wall thickness is 2 mm. The external dimensions of the box come to 96.5 x 61 x 41 mm. All the objects in this model were designed to be printable without support.

Download this rectangular protective honeycomb grid model in STL format. Mounting holes are placed at the four corners (center-to-center 210x110 mm), each with a diameter of Ø5 mm. The overall dimensions reach 220x120 mm, with very large 10 mm cell size for peak ventilation. This grid serves as both a protective guard and a ventilation panel.

Tube reducer ⌀200 mm to ⌀50 mm in STL 3D format. Total length of this junction is 80 mm. The thickness of the tubes is identical: 3 mm. The larger-diameter tube has a sleeve length of 30 mm, the smaller one of 30 mm as well. The ends have no fillet.

3D square protective honeycomb grid file in STL format. Mounting holes are placed at the four corners (center-to-center 120x120 mm), each with a diameter of Ø8 mm. The overall dimensions reach 136x136 mm, with very large 10 mm cell size for peak ventilation. This grid functions as both a mechanical guard and a ventilation panel.

Download this STL model of a basic U-shaped handle. The overall dimensions are 35×100×14 mm. The handle has a square section and a softened transition. A fillet along the edges ensures a more comfortable grip. The openings are 4 mm diameter and have a 86 mm center-to-center distance.

3D file in STL format of a round-to-rectangular tube adapter with an outer diameter of ⌀158 mm and a rectangular section with internal dimensions 210×180 mm. The shell thickness is 4 mm and the overall length is 83 mm. Chamfers are applied on the outside of the cylindrical end and on the inside of the rectangular end to ease insertion.

3D model of a right-angle bracket with a central reinforcing bar in STL 3D format. The dimensions are 200 mm in length, 200 mm in height, 28 mm in width, and 6 mm in thickness. The screw holes have a diameter of 5 mm. The reinforcing bar enhances mechanical strength and provides two passages for screwdriver access. Support generation is not required for printing this bracket, printed flat on the build plate.

Tube adapter ⌀40 mm to ⌀37 mm in STL 3D format. Length of this connector is 115 mm. The thickness of the tubes is identical: 5 mm. The larger-diameter tube has a sleeve length of 35 mm, the smaller one of 40 mm. The ends are rounded to facilitate the connection of the two tubes.

Download this cylindrical box in 3D STL format. Its diameter is 105 mm and its total height is 38 mm. The walls have a thickness of 2 mm. A fillet located at the bottom of the box makes it easier to grip stored objects inside.

File of a corner bracket reinforced in STL 3D format. The dimensions are 180 mm in length, 180 mm in height, 14 mm in width, and 12 mm in thickness. The drill holes have a diameter of 5 mm. Chamfers are applied to the holes for a cleaner fit of the screws. The central reinforcement bar improves rigidity and includes two openings for fastening. This bracket prints without support, printed flat directly on the build plate.

3D file of a mounting bracket with a central reinforcement in STL format. The dimensions are 150 mm in length, 150 mm in height, 14 mm in width, and 6 mm in thickness. The screw holes are designed with a diameter of 6 mm. Chamfers are applied to the holes to improve the seating of the heads. The central reinforcement bar reduces bending and provides two clearances for screwdriver access. No support is needed to print this bracket, printed flat on the build plate.