This model is designed for testing the correct first-layer flow rate.
1. Print the 0.80–1.20 profile version.
2.1. If the first layer printed with a flow rate of 1.0 looks poor, use the 0.91–0.99 version to fine-tune the setting.
2.2. If you experience layer separation with a flow rate of 1.0, use the 1.01–1.09 version instead.
3. Test the selected setting on a larger model — either add a primitive in your slicer yourself or use my provided model.

3.1 After printing, test the models by bending them. The test print must not crack along the layer after bending. This check should be performed if no issues were detected during the initial inspection.

When removing the model, carefully monitor for any delamination.
 

3.2 Here is your ideal version.