Part Modeling > Engineering Features > Hole > Standard Holes > To Create a Clearance Hole
To Create a Clearance Hole
1. Click Model > Hole. The Hole tab opens with the default hole type set to Simple hole.
2. Click to change the hole type to Standard hole. The Standard hole options are shown, with tapping selected by default.
3. Click to clear the tapping option. The Hole tab layout changes, and drilled hole and clearance hole are displayed. Drilled hole is selected by default.
4. Click to select clearance hole.
5. Select a surface on the model on which to place the hole. The selection is highlighted and the default placement Type is set to Linear. This is your placement reference.
You can select the placement reference before you select the hole tool.
The default placement Type varies according to the selection of the placement reference. For a surface reference, the default type is Linear.
You can change the hole placement type by selecting the new type from the Type box on the Placement tab.
6. Drag the offset placement reference handles to the appropriate references to constrain the hole. As you drag each handle, the available references are highlighted as your pointer moves over them. The system automatically snaps the handle to the reference and adds them to the Offset References collector on the Placement tab.
7. To orient the hole to be parallel to or perpendicular to a reference:
a. Click the Placement tab, click the Hole orientation collector, and select a planar, axial, or linear reference.
b. Select either Parallel or Perpendicular from the list.
8. Select the desired hole chart in the box adjacent to thread type. Thread type enables you to select industry-standard hole charts (ISO, UNC, or UNF).
9. Type or select a screw size in the box adjacent to .
* If you enter a screw size that is not available in the list, the system selects the closest screw size. You can also drag the hole diameter handle to select a screw size.
10. Select the required drill depth type from the drill depth type list. By default, the drill depth is set to (Drill up to the next surface).
11. To add countersink, click .
12. To add counterbore, click .
13. To ensure that the entire top of the hole intersects the outside of the solid geometry, on the Shape tab, make sure that the Top Clearance check box is selected.
14. Click .