Hole

Choose a hole type — Clearance, Counterbore, Countersink, or Tapped — then a standard (UNC, UNF, metric coarse or fine) and a size. The dimensions fill in from the charts:

• Clearance holes offer close / normal / loose fits per the inch and metric standards.
• Counterbore sizes the bore and depth for a socket head cap screw, sitting the head flush.
• Countersink uses the flat-head angle convention for the system — 82° imperial, 90° metric — and the matching head diameter.
• Tapped drills the correct tap-drill size and carries the thread callout with the feature.

Every field stays editable after it auto-fills, so shop-specific tweaks are one keystroke away. A Simple mode skips the charts entirely and drills any diameter you type.

Picking stays live: click as many sketch points and circle/arc centers as you like — a bolt circle, a grid, the whole plate. They all become one Hole feature with one spec, so editing it later updates every hole together. Each position gets its own row in the dialog with an × to drop just that one, and hovering a row lights up the matching point in the viewport.

The pattern sketch doesn't need to be visible — its points glow as pickable markers while the tool is active, so a sketch that was hidden by an earlier extrude works as-is.

Holes stay tied to the sketch: move a circle and its hole follows on the next rebuild.

• Through All always makes it out the far side of the part.
• Blind takes a depth measured to the flat shoulder, with an optional drill point cone at any point angle (118° by default) — the bottom of the hole looks like a drill made it.
• The tool figures out which side of the sketch the part is on and drills into it; Flip direction covers the other case.

A tapped hole stores its thread callout for documentation. Tick Modeled threads and the same thread engine behind the Thread tool cuts real helical geometry. On blind holes the threads stop a realistic tap's-lead short of the bottom — full threads never pretend to reach the drill point.

Tick Chamfer entry (and Also chamfer far end on through holes) to break the edges of every hole in the pattern as part of the same feature — 45° or 60°, sized by diameter or depth. It's the same one-step chamfer the Thread tool offers, applied across the whole pattern at once: a forty-hole plate gets deburred tops and bottoms without forty trips through the Chamfer tool. Counterbored holes chamfer the counterbore rim, and tapped holes size the chamfer past the finished thread automatically.

• Draw your pattern with circles at the real fastener positions — the Hole tool picks their centers, and the circles' own diameters don't matter.
• Holes live in the feature history: edit the feature to switch a pattern from clearance to tapped, change the size, or add a chamfer, and everything downstream rebuilds.