This test includes a (White) Control Set for your default Bridge settings and a (Black) Test Set.

The Bridge distances in this test are 30 mm, 50 mm, 100 mm, and 150 mm.

Disable supports and have 0% infill.

The (White) Control Set should be your printer's default bridge settings.

The (Black) Test Set you can change the Bridge Flow Ratio (Quality section per object), Bridge speed and acceleration (Speed section per object).

Settings should be per object and you can delete the bridge lengths not necessary for testing.

Recommended to test 30 mm (Control and Test) first, then proceed to next level.

Recommended to only change one setting per print job to compare with Control Set, this way you can see what made a difference.

Recommended to research and understand general capabilities of bridging.

My K1SE, by default, was able to bridge all distances in this test and successfully finish the top layer of the bridge. Did it look pretty, no. Could the top surface of the bridge look better, yes. I used TECBEARS High Speed PLA+ with 25 mm³/s Max Volumetric Speed as calibrated. Understand that the bottom of the bridge won't look pretty, but what is important is if a "bridge" (top layer) is actually formed as the end result.

- Any layer height, but default for your nozzle/printer is best for testing - I used 0.2mm layer.

- 2 walls

- NO SUPPORTS

- NO BRIMS

- 0% Infill

- Control Set should be your printer's default settings and bridge settings, but make sure all of the above are true.

- Recommended to only change one setting in the Test Set to compare with Control Set, this way you can see what made a difference.

- Print by Layer

- All Advanced nozzle/filament settings (retraction, Z-slope, etc.) were off, by default.

- Keep Control and Test settings as close to default as possible. Only test Bridge Flow Ratio (Quality section per), Bridge speed and acceleration (Speed section)

Design Concept

The bridge test model features multiple beams of varying lengths—30 mm, 50 mm, 100 mm, and 150 mm—to challenge the printer's bridging capabilities. Each segment tests different span lengths to evaluate potential sagging or defects stemming from complex bridging within 3D printing.

Purpose

This test model is ideal for calibrating and preparing 3D printers to handle intricate structure manufacturing, ensuring accurate print dimensions and stronger inter-layer adhesion. It’s chiefly utilized by technicians needing thorough quality checks on printer setups.

Bridge Test, 30 mm, 50 mm, 100 mm, 150 mm

K1SE, 0.2mm layer, 2 walls, 0% infill, No Supports