Aligning the Horn on Another Object

Align the back face centre of the horn on the front upper edge of the cuboid.

1. In the model tree, select Subtract1.
2. On the Transform tab, in the Transform group, click the  Align icon.
3. On the Align dialog, under Source workplane, click the X field to make point entry active.
4. Place the Source workplane by holding down Ctrl+Shift to snap to the face centre at the back of the horn.

The destination workplane is to be set on the top and nearest edge of the cuboid at an angle of 45° to the cuboid.

Figure 1. The preview of the horn placement is shown in green.

5. Click OK to apply the transform and to close the dialog.

Union the cuboid and horn to ensure mesh connectivity.

6. Select both Cuboid1 and Subtract1 in the model tree.
7. On the Construct tab, in the Modify group, click the  Union icon.

   
   

   

   
   Figure 2. The Align dialog.