3DBenchy-Toolsfor tuning and testing 3D printers

3DBenchy is a 3D model specially designed for testing and benchmarking 3D printers. The purpose of this 3D model is to print without supporting materials and to print out with a 1:1 ratio. Because of the small size of the 3D model (15.55 cm3), most 3D printers do not need to support the difficulty of printing the model more convenient and less difficult. And not much material is consumed.

The different surfaces of the #3DBenchy model all show typical problems with 3D models: such as surface finish, edge warping, accuracy, etc. It is a small identifiable object that you can download, make and share for free.

 #3DBenchy is a small identifiable object. This STL file is free for you to download, create and share.
Step 1: Shape features

The first layer of detail-the typical first layer of extrusion is clearly displayed through the shallow letters of the bottom of the boat.

Overhanging surface-#3DBenchy provides several challenging areas, such as the interior of bridges that are difficult to reach. Because the overhang problem is the Achilles heel of 3D printing.

Low slope surface-3D printed layered structure is clearly displayed through the slope surface. If it is printed horizontally, the gunwale and bridge top of #3DBenchy will show steps.


High-resolution STL files-STL files triangulated with extremely high resolution to generate smooth surfaces. The maximum deviation between the STL file and the original CAD file is set to 0.001 mm.


The plane is horizontal-the top surface of the box, chimney and deck is flat, horizontal and parallel to the bottom surface.

The surface details are tiny-the height of the letters on the stern is less than 2 mm, and the thickness of the nameplate of #3DBenchy is only 0.1 mm. You can shine and print these tiny details with a high-resolution 3D printer.

The cylindrical-chimney design clearly demonstrates the deviation of roundness, which is used to define a concentric cylindrical shape with an inner diameter and an outer diameter.

Large horizontal holes-The wheels of the boat provide round concealment features that are difficult to touch, and the rear window provides a large round horizontal hole.

Small horizontal hole-The rope represents a small short horizontal hole with a very thin flange on the hull.

Inclined small hole-The rod holder provides a very small blind hole that is slightly inclined.

Symmetry-#3DBenchy makes any deflection and warpage easy to detect because of its perfect symmetry.


Hull-The hull is challenging for 3D printing. It is a draped curved surface that can clearly show any deviations in the draped curved surface.


Step 2: Measurement and calibration


For the best results, use #3DBenchy to test and calibrate your 3D printer by adjusting hardware and software settings.

Use #3DBenchy to test and calibrate your 3D printer for best results by adjusting hardware and software settings.


Compare your #3DBenchy result with the caliper measurement shown in the image below. The results of the 3D printer's dimensional accuracy, tolerances, warpage, and deviations related to changes in printing parameters and material types can be learned. The shape and size of this 3D model are designed to challenge 3D printers.


It is a valuable tool for comparing the results of multiple different 3D printers, no matter how the 3D printing effect of #3DBenchy on a certain 3D printer is, assuming similar printing settings are used.


Small detail stern nameplate-The logo and lowercase letters on the stern are extruded by 0.10 mm.


Total vertical height-#3DBenchy The total vertical height from top to bottom is 48.00 mm. The top of the box is 15.50 mm above the bottom.


Cargo Box Dimensions-The outer dimensions of the container on the #3DBenchy deck are 12.00 x 10.81 mm and the inner dimensions are 8.00 x 7.00 mm. The depth is 9.00 mm.


Rope diameter-The inner diameter of the #3DBenchy rope is 4.00 mm. The depth between the flange and the hull is 0.30 mm.


The size of the front window of the bridge-the size of the rectangular front window is 10.50 x 9.50 mm. Its parallel inner surface cuts into the bridge horizontally.

Chimney roundness-The diameter of the outer top of the chimney and the cylindrical hole are 7.00 and 3.00 mm, respectively. The depth of the blind hole is 11.00 mm.


Overall horizontal length-#3DBenchy's overall horizontal length from bow to stern is 60.00 mm.


Overall horizontal width-#3DBenchy The overall horizontal width from port to starboard is 31.00 mm.


The size of the rear window of the bridge-the depth of the flange is 0.30 mm. The inner diameter of the cylindrical tail window is 9.00 mm. Its outer diameter is 12.00 mm.

Bow drape inclination-#3DBenchy’s high secret key bow has a 40° drape angle to the horizontal.


Bridge top inclination-The top of the bridge is inclined at an angle of 5.5° to the horizontal.


Bridge roof length-the front and rear surfaces of the roof are parallel, and the distance is 23.00 mm.


Step 3: Print #3DBenchy


It is difficult to recommend universal settings for all machines due to the wide variety of 3D printing technologies. Since FFF (Fuse Manufacturing, also known as FDM) is widely used, we recommend the following settings to get the best results.


Printing speed (extrusion): up to 50 mm/sec

Printing speed (stroke): up to 150 mm/sec

Scale:1:1 (dimensions have not been modified, the size of #3DBenchy.stl from bow to stern is 60.00 mm).

Default layer height: 0.1 to 0.2 mm (100-200 microns)

3D printing beads: PLA plastic heating bed temperature is 55 °C, ABS plastic filament heating bed temperature is 110 °C First layer height: 0.3 mm

Filling: 10-25% Printing speed (extrusion): 20-50 mm/sec


Step 4: Download the #3DBenchy.stl file

Download the STL file that is saved in STL file format and can be loaded into all 3D printing slicing softwar


Step 5: Show and share

Show your printed products and communicate with others to improve your printing skills

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