Lock

This example builds a cylindrical lock: a plate pocket in the lock edge with a plunge and two predrill holes, and a bore through the face with two smaller through holes.

The Feature Group's structure:

• Lock (FeatureGroup × 1)
  • Plate (Rectangle, Lock Edge)
    • Plunge (Circle, Lock Edge)
    • Predrill 1 (Circle, Lock Edge)
    • Predrill 2 (Circle, Lock Edge)
  • Through Hole 1 (FaceCircle, Face)
    • Through Hole 2 (FaceCircle, Face)
    • Through Hole 3 (FaceCircle, Face)

Children are positioned from their parent: a location of 0 puts a child exactly at its parent's position.

The Feature Group

The Feature Group sets where the lock goes. Every Feature in it is measured from here.

• Coordinate References: L (length) from the Top, W (width) from the Lock edge, and T (thickness) from the Key Face.
• Locations: one location, 44″ from the top and 2.75″ from the lock edge (the backset). The T location is left at 0 and set on each Feature instead.

Locations are measured to the center of the cut.

Plate

The Plate is a Rectangle on the Lock Edge: the shallow pocket for the lock's faceplate.

Property	Expression	Value	Why
TLocation	$Door.Thickness/2	0.875	Centers the plate across the edge
LLocation	0.0	44	Uses the group's location, 44″ from the top
Depth	0.156	0.156	Depth of the faceplate pocket
Bevel	$Door.LockBevel	0	Matches the bevel of the door's lock edge
Length	2.25+1/64	2.265625	Faceplate length, plus 1/64″ clearance
Width	1.125+1/64	1.140625	Faceplate width, plus 1/64″ clearance
Radius1 – Radius4	0.0	0	Square corners, which need a machine with a chisel

TIP

To pick from common expressions such as $Door.Thickness/2, select the property's cell, then select the … button.

Plunge

The Plunge is a Circle on the Lock Edge, a child of the Plate: the deep bore for the latch.

Property	Expression	Value	Why
TLocation	0	0.875	Same as the Plate
LLocation	0.0	44	Same as the Plate
Depth	WLocation	2.75	Bores in as far as the group's backset, to meet the face bore
Bevel	0.0	0
Diameter	1	1	Latch bore diameter
DiameterMinimum, DiameterMaximum	Diameter	1	Only a 1″ tool. Widen the range to allow other tools
DepthMinimum, DepthMaximum	Depth	2.75	Exactly the depth set above

Predrills

Predrill 1 and Predrill 2 are Circles on the Lock Edge, children of the Plate: the screw holes for the faceplate, 0.8125″ either side of its center.

Property	Predrill 1	Predrill 2
TLocation	0.0 (0.875)	0.0 (0.875)
LLocation	0.8125 (44 + 0.8125 = 44.8125)	-0.8125 (44 − 0.8125 = 43.1875)
Depth	0.25	0.25
Diameter	0.156	0.156
DiameterMinimum, DiameterMaximum	Diameter	Diameter
DepthMinimum, DepthMaximum	Depth	Depth

Predrill 1	Predrill 2

TIP

Build Predrill 1, then copy and paste it under the Plate and change only the name and LLocation to make Predrill 2.

Through Hole 1

Through Hole 1 is a FaceCircle on the Face: the main bore through the door for the lock's cylinder.

Property	Expression	Value	Why
WLocation	0.0	2.75	Uses the group's location, 2.75″ from the lock edge
LLocation	0.0	44	Uses the group's location, 44″ from the top
DepthClosestToRef	$Door.Thickness	1.75	Cuts all the way through from the key face
DepthFurthestFromRef	0.0	0	Nothing more from the other face
Diameter	2.125	2.125	Cylinder bore diameter
DiameterMinimum, DiameterMaximum	Diameter	2.125

Using $Door.Thickness for the depth means the hole always goes through, whatever the door's thickness.

Through Holes 2 and 3

Through Hole 2 and Through Hole 3 are FaceCircles on the Face, children of Through Hole 1: the holes for the lock's mounting screws, 1-3/8″ either side of the bore's center.

Property	Through Hole 2	Through Hole 3
LLocation	-(1+3/8) (44 − 1.375 = 42.625)	1+3/8 (44 + 1.375 = 45.375)
DepthClosestToRef	$Door.Thickness	$Door.Thickness
Diameter	5/16 (0.3125)	5/16 (0.3125)

Through Hole 2	Through Hole 3