Add holes to a part and repeat them
A Hole feature puts round holes into a part's design: one definition of diameter and depth, placed as many times as you need on a chosen plane. This exercise adds one hole to a saved part, repeats it, and saves. It's a design feature, not yet a drilling cycle or a program. GCmaker only.
Open a saved solid part, for example the rectangular tube from the earlier guide. In Quick Features, then Features, then Hole, add a Hole feature. GCmaker checks that the feature suits the current shape and that a work plane is available. What you're adding is design geometry; the drilling operation and the program come later, in a setup.
In the hole definition panel select the Plane. The placement X and Y are coordinates in the selected plane's frame, so confirm the plane and look at where the hole lands in the viewport before repeating it. Under Details set Diameter and Flat Depth (both must be positive), leave the field to apply it, and look at the solid. Choose the depth on purpose; don't assume it cuts one wall of a tube or goes right through. Tip Angle and the read-only Full Depth are shown too. Full Depth is simply calculated from Flat Depth, Diameter and Tip Angle; it doesn't mean a drill or a cycle has been set up. Leave Bevel and Apply Segmentation off for this exercise.
A new Hole feature starts with one placement row. Stay in the default Absolute mode and set the row's X and Y on the chosen plane, then check the opening in the solid. The grid also has Mode, Distance, Angle and Origin for relative and polar placement; leave those for a later guide.
Add makes another placement row; Copy + Add duplicates the selected row's settings so you only change the position. All placements share the feature's Diameter and depth; a group of holes with a different size needs its own Hole feature. Copy + Add copies the position too, so until you move the new row it sits on top of the old one. A row that lands on an earlier one, within the placement tolerance, is highlighted yellow and cuts nothing extra; move it to where it belongs. That check isn't a test for holes that partly overlap. Suppress keeps a row but leaves its hole out of the geometry. Remove, or Delete from the row's menu, takes the placement out of the feature. Neither one deletes the part.
Save the .gcmprt to keep the feature and its placements, and inspect the geometry before it goes into operations and a setup. A hole feature doesn't pick a drill or a plasma process, a feed, a work offset or a post; all of that is set in the manufacturing workflow.
Questions people ask
The X and Y are coordinates in the plane you selected. Check the Plane first, then the coordinates.