I. Introduction

When the laser cutting machine is not a bevelling model, it will not be able to cut the bevel above the wall thickness of the pipe because the cutting head cannot be deflected and always keep the light out vertically.

For the two L-shaped splicing method I-beams pictured below, if they are cut by a non-bevelling machine, there will be a problem with the wing and web knife paths not connecting to each other, resulting in the parts not falling naturally.

Note: Italic texts with blue highlights are  clickable tutorial links that lead to detailed parameter explanations and usage instructions.

II. Solutions

Various cases and treatment ideas

For this kind of problem, there are different ways to deal with oblique cut in different directions, depending on the desired part effect.

You can first according to the effect of the programme, choose what you need tutorials, directly click on the corresponding link, quickly jump to the desired location.

★ Jump after the mouse in the scroll wheel slide up a little to see the sub-title.

Ⅲ. Detailed Steps

1、X-directional oblique cut

（1）Less material on the concave side, more on the convex side, and ensure toolpath continuity.

①  Import the part and perform 【Collision-Avoid】. Then click 【Optimizaze H - beam web toolpath】.

Note: The 【Optimizaze H - beam web toolpath】function is exclusive to the structural steel version. If you do not see it in the toolbar, please first refer to the guide on 【 How to obtain the steel structure package and enable steel structure】.

② Set the parameters as shown in the figure. Once completed, click OK.

（2）Less or more material on both side, and toolpath continuity.

① Draw a straight-cut H-beam and import it into the software. Perform toolpath collision detection.

② Use the 【Measure】 tool → from the drop-down, select 【Display Normal Vector】. Measure the Z-direction distance from the B-axis start rotation point to the outer surface of the flange.

③ Based on the measured value, draw the male and female ends.

Note: The drawing examples below are shown using TubesT, but you can also use external software such as SolidWorks.

• • • Video Tutorial – Drawing Male ends

• • • Video Tutorial – Drawing Female ends

After processing the parts according to the above method, the subsequent parts can be realised with an effect similar to the ‘male-female joint’.

In addition, the outside of the splice can be drawn in the shape of a notch, creating the effect of ‘outer less material, inner male and female’.

2、Z-directional oblique cut

（1）Web plate free to switch between more/less material

① Select the part and click Reverse/Rotate.

② Select the toolpath/part you want to change, then go to 【Curve Tools】 → 【Quick Rectangle Toolpath】.

③ Video tutorial

（2）Less or more material on web plate, and toolpath continuity.

①  Import the part and perform 【Collision-Avoid】, then click 【Optimizaze H - beam web toolpath】.

Note: The 【Optimizaze H - beam web toolpath】function is exclusive to the structural steel version. If you do not see it in the toolbar, please first refer to the guide on 【how to Activate Structural Steel Permissions】.

② Set the parameters as shown in the figure. Once completed, click OK.

（3）More or Less material on both plate, toolpath continuity

Instead of cutting the web diagonally, draw a right triangle shape and use extrusion cut to make a vertical cut on the web.

① Draw a straight-cut H-beam and import it into the software.

② Measure the distance between the two 45° chamfered edges.

③Drawing 

Note: The following tutorial is an example of drawing in TubesT. However, in practice, you can draw in TubesT as well as in external software such as SolidWorks.

Step 1: Draw a trapezoid where the slanted edge is at a 45° angle to the horizontal.

Step 2: Activate the Intersection Point command, and click the center reference line and the slanted edge to create an intersection.

Step 3: Activate the Perpendicular Bisector command, and click three points in sequence (order matters!).

Step 4: Set the position:

①The base of the isosceles triangle should be slightly longer than the measured value (e.g., use 16.7 mm).

②Confirm the part’s total length.

Step 5: Trim unnecessary segments.

Step 6: Apply the Branch Pipe Tool, then generate the part.

④Video Tutorial：

note that the first step of the measurement should be taken from the end of the web on the side with the toolpath, pulling horizontally to the side without the toolpath, as detailed in step 1 above