Shapes and parts#

Field names are as they appear in the Draw tab and the Properties panel.

The shape picker#

Family	Buttons
Outlines	Rect · Round · Sign · Circle · Ellipse · Polygon · Star · Heart · Slot · Shield
Patterns	Spiro · Maze
Parts	Board · Gear · Cam · Ratchet · Escape · Pend · Track · Clock

Ignore drag-sizing: Gear, Escapement, Pendulum, Track. Lose their settings when rotated or stretched: all shapes (they become plain paths). From centre (under the fields): a drag grows the shape from its middle.

Outlines and text#

Shape	Fields
Rect	Width · Height
Round (rounded rectangle)	Width · Height · Radius
Sign (inside-rounded rectangle)	Width · Height · Radius
Circle	Diameter
Ellipse	Width · Height
Polygon	Radius · Sides
Star	Outer R · Inner R · Points
Heart	Radius · Angle
Slot	Length · Width
Shield	Width · Height
Text	Text · Size · Font

Gear#

Field	Meaning
Module	Tooth size. Pitch diameter = Module × Teeth
Teeth	Tooth count (min 4)
Profile	Involute · Cycloidal (clock)
Pressure	Involute only. Pressure angle, 5–35°
Pins	Cycloidal only. Mating lantern pinion's pin count
Pin Ø	Cycloidal only. Pin diameter
Back cut	Cycloidal only. % relief of the flank that never drives
Runs	Cycloidal only. Clockwise · Anticlockwise
Pinion	Cycloidal only. Also draw the mating pinion
Bore Ø · Hub Ø · Spokes · Spoke W · Rim	Wheel body
Backlash	Play between the flanks
Count #	Engrave the tooth count
Pitch ○	Engrave the pitch circle

Properties shows pitch, base, outside and root diameters, the centre distance and the play, and an Animate in mesh button.

Clock#

Section	Fields
Pendulum	Beat (s) · Esc teeth
Going train	Wheels (3 or 4) · Min pins · Great (min/rev) · Max wheel Ø · Tooth taper · Backlash · Pin Ø large · Pin Ø small
Hour hand	Motion work · Arbor spacing
Weight drive	Run (h) · Drop · Drum Ø
Assembly	Arrange linkage · Animate whole clock · Re-lay (when editing)

Emits one shape per wheel, the anchor and the pendulum, plus a clock chip that reopens the designer.

Escapement#

See Escapement settings.

Pendulum#

Field	Meaning
Length	Hanging hole to bob centre. The only dimension the beat depends on
Rod W	Rod width
Bob W · Bob H	Bob size
Hole Ø	Hanging hole

The panel shows the resulting beat and period in seconds.

Cam#

Field	Meaning
Base Ø	Starting diameter of the spiral
Rise/rev	Rise per full turn. Actual lift = rise × sweep ÷ 360 (shown)
Sweep	How far round the spiral runs
Bore Ø	Pivot hole
Lever · Lever W	Handle length and width

Profile: Archimedean spiral, r = r₀ + kθ. The panel shows the pressure angle.

Ratchet#

Field	Meaning
Gear turns	Free direction: clockwise or anticlockwise
Teeth · Outside Ø · Depth · Tip R · Bore Ø	The wheel
Pawls · Length · Width · Pin Ø	The pawls
Clearance	Fit clearance
Cutter Ø	The bit you'll cut it with

Board (cutting board)#

Field	Options / meaning
Shape	Rectangle · Oval · Barrel
Width · Height	Board size
Handle	None · Paddle · Side slots · End slot
Edge gap	Handle slot distance from the edge
Hole · Hole Ø	Hanging hole
Groove · Inset	Juice groove and its distance from the edge

Compound path: double-click to split.

Track#

Field	Options / meaning
Kind	Straight · Curve · Turnout
Length	Straight only
Radius · Arc	Curve
Hand · Crotch	Turnout
End A · End B (Toe · Main · Branch on a turnout)	Socket · Peg · Square
Width · Gauge	Track width and rail spacing
Peg Ø · Neck W · Neck L	Joint size
Clearance	Peg-to-socket slack. The socket follows it
Treads · Tread pitch	Optional tread marks

Grooves are centrelines for a 6 mm cutter. Compound path: double-click to split.

Maze#

Field	Meaning
Width · Height	Maze size
Spacing	Corridor pitch. Rounds up to fit whole cells
Corner	Fillet radius at the bends
Seed	Which maze. The dice button makes a new one
Loops	Share of dead ends reopened into loops

Output: open centreline paths. Wall = pitch − cutter Ø. One entrance top, one exit bottom; the leads overhang by one pitch.

Spirograph#

Field	Meaning
Radius	Size on the stock
Loops	Whole number = lobe count
Pen p	Pen offset. Can pass through the centre