Three stacked spheres with simple facial features and a top hat standing on a small platform

// Snowman (stylized)
// Three stacked spheres with simple facial features and a top hat standing on a small platform
// Categories: Art & Design; 3D Printable

@settings(defaultLengthUnit = mm, kclVersion = 2.0)

// Parameters
rBottom = 40
rMiddle = 28
rHead = 20
buttonR = 3
eyeR = 3
noseR = 3
noseLen = 18
hatBrimR = 26
hatBrimThk = 2
hatTopR = 18
hatTopH = 30

// Arms (stick) parameters
armLen = rMiddle * 1.6
armR = 2.5
armEmbed = 4
armZOffset = rMiddle * 0.15

// Base parameters (for printing)
baseThk = 4
baseMargin = 3 // extra beyond arm reach or body footprint
baseColor = "#bdbdbd"

// Stack positions along Z so spheres just touch
zBottomC = rBottom
zMiddleC = 2 * rBottom + rMiddle
zHeadC = 2 * rBottom + 2 * rMiddle + rHead

// Bodies (pure spheres) — each a half-disk revolved about X
bottomSketch = sketch(on = XY) {
  line1 = line(start = [var -40mm, var 0mm], end = [var 40mm, var 0mm])
  arc2 = arc(start = [var 40mm, var 0mm], end = [var -40mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == rBottom
}
bottomRegion = region(segments = [bottomSketch.line1, bottomSketch.arc2])
hide(bottomSketch)
bottom = revolve(bottomRegion, axis = X, angle = 360deg)
  |> translate(z = zBottomC)
  |> appearance(color = "#ffffff", roughness = 20, metalness = 0)

middleSketch = sketch(on = XY) {
  line1 = line(start = [var -28mm, var 0mm], end = [var 28mm, var 0mm])
  arc2 = arc(start = [var 28mm, var 0mm], end = [var -28mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == rMiddle
}
middleRegion = region(segments = [middleSketch.line1, middleSketch.arc2])
hide(middleSketch)
middle = revolve(middleRegion, axis = X, angle = 360deg)
  |> translate(z = zMiddleC)
  |> appearance(color = "#ffffff", roughness = 20, metalness = 0)

headSketch = sketch(on = XY) {
  line1 = line(start = [var -20mm, var 0mm], end = [var 20mm, var 0mm])
  arc2 = arc(start = [var 20mm, var 0mm], end = [var -20mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == rHead
}
headRegion = region(segments = [headSketch.line1, headSketch.arc2])
hide(headSketch)
head = revolve(headRegion, axis = X, angle = 360deg)
  |> translate(z = zHeadC)
  |> appearance(color = "#ffffff", roughness = 20, metalness = 0)

// Buttons on middle (three small spheres along +X/front)
btnSpacing = rMiddle * 0.6
btnX = rMiddle * 0.92
btn1Sketch = sketch(on = XY) {
  line1 = line(start = [var -3mm, var 0mm], end = [var 3mm, var 0mm])
  arc2 = arc(start = [var 3mm, var 0mm], end = [var -3mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == buttonR
}
btn1Region = region(segments = [btn1Sketch.line1, btn1Sketch.arc2])
hide(btn1Sketch)
btn1 = revolve(btn1Region, axis = X, angle = 360deg)
  |> translate(x = btnX, y = 0, z = zMiddleC + btnSpacing)

btn2Sketch = sketch(on = XY) {
  line1 = line(start = [var -3mm, var 0mm], end = [var 3mm, var 0mm])
  arc2 = arc(start = [var 3mm, var 0mm], end = [var -3mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == buttonR
}
btn2Region = region(segments = [btn2Sketch.line1, btn2Sketch.arc2])
hide(btn2Sketch)
btn2 = revolve(btn2Region, axis = X, angle = 360deg)
  |> translate(x = btnX, y = 0, z = zMiddleC)

btn3Sketch = sketch(on = XY) {
  line1 = line(start = [var -3mm, var 0mm], end = [var 3mm, var 0mm])
  arc2 = arc(start = [var 3mm, var 0mm], end = [var -3mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == buttonR
}
btn3Region = region(segments = [btn3Sketch.line1, btn3Sketch.arc2])
hide(btn3Sketch)
btn3 = revolve(btn3Region, axis = X, angle = 360deg)
  |> translate(x = btnX, y = 0, z = zMiddleC - btnSpacing)
buttons = [btn1, btn2, btn3]
  |> appearance(color = "#000000", roughness = 50, metalness = 0)

// Eyes on head (two small spheres)
eyeX = rHead * 0.95
eyeYOffset = rHead * 0.35
eyeZ = zHeadC + rHead * 0.15
eyeLSketch = sketch(on = XY) {
  line1 = line(start = [var -3mm, var 0mm], end = [var 3mm, var 0mm])
  arc2 = arc(start = [var 3mm, var 0mm], end = [var -3mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == eyeR
}
eyeLRegion = region(segments = [eyeLSketch.line1, eyeLSketch.arc2])
hide(eyeLSketch)
eyeL = revolve(eyeLRegion, axis = X, angle = 360deg)
  |> translate(x = eyeX, y = -eyeYOffset, z = eyeZ)

eyeRSketch = sketch(on = XY) {
  line1 = line(start = [var -3mm, var 0mm], end = [var 3mm, var 0mm])
  arc2 = arc(start = [var 3mm, var 0mm], end = [var -3mm, var 0mm], center = [var 0mm, var 0mm])
  coincident([line1.end, arc2.start])
  horizontal(line1)
  radius(arc2) == eyeR
}
eyeRRegion = region(segments = [eyeRSketch.line1, eyeRSketch.arc2])
hide(eyeRSketch)
eyeRht = revolve(eyeRRegion, axis = X, angle = 360deg)
  |> translate(x = eyeX, y = eyeYOffset, z = eyeZ)
eyes = [eyeL, eyeRht]
  |> appearance(color = "#000000", roughness = 50, metalness = 0)

// Nose (simple revolve approximating a carrot)
noseSketch = sketch(on = XZ) {
  line1 = line(start = [var 0mm, var 0mm], end = [var 18mm, var 0mm])
  line2 = line(start = [var 18mm, var 0mm], end = [var 18mm, var -0.01mm])
  coincident([line1.end, line2.start])
  arc3 = arc(start = [var 17.54mm, var -0.51mm], end = [var 18mm, var -0.01mm], center = [var 17.5mm, var -0.01mm])
  coincident([line2.end, arc3.end])
  line4 = line(start = [var 17.54mm, var -0.51mm], end = [var 1.34mm, var -1.93mm])
  coincident([arc3.start, line4.start])
  arc5 = arc(start = [var 0mm, var -0.5mm], end = [var 1.34mm, var -1.93mm], center = [var 1.23mm, var -0.68mm])
  coincident([line4.end, arc5.end])
  line6 = line(start = [var 0mm, var -0.5mm], end = [var 0mm, var 0mm])
  coincident([arc5.start, line6.start])
  horizontal(line2)
}
region001 = region(segments = [noseSketch.line1, noseSketch.line2])
hide(noseSketch)
nose = revolve(region001, axis = X)
  |> translate(x = rHead * 0.98, y = 0, z = zHeadC)
  |> appearance(color = "#ff7f00", roughness = 40, metalness = 0)

// Hat: brim (thin disk) + crown (short cylinder) merged into one solid
hatBrimPlane = offsetPlane(XY, offset = zHeadC + rHead)
sketch001 = sketch(on = hatBrimPlane) {
  circle1 = circle(start = [var 26mm, var 0mm], center = [var 0mm, var 0mm])
}
region002 = region(segments = [sketch001.circle1])
hide(sketch001)
hatBrim = extrude(region002, length = hatBrimThk)

sketch002 = sketch(on = faceOf(hatBrim, face = END)) {
  circle1 = circle(start = [var 18mm, var 0mm], center = [var 0mm, var 0mm])
}
region003 = region(segments = [sketch002.circle1])
hide(sketch002)
hat = extrude(region003, length = hatTopH)
  |> appearance(color = "#111111", metalness = 10, roughness = 40)

// Stick arms (thin cylinders), kept horizontal for robustness
// Right arm: build along +Y using -XZ (normal is +Y)
armCircleR = sketch(on = -XZ) {
  circle1 = circle(start = [var 2.5mm, var 0mm], center = [var 0mm, var 0mm])
}
region004 = region(segments = [armCircleR.circle1])
hide(armCircleR)
rightArm = extrude(region004, length = armLen)
  |> translate(
       x = 0,
       y = rMiddle - armEmbed,
       z = zMiddleC + armZOffset,
       global = true,
     )
  |> appearance(color = "#6b4f2a", roughness = 60, metalness = 0)

// Left arm: build along -Y using XZ (normal is -Y)
armCircleL = sketch(on = XZ) {
  circle1 = circle(start = [var 2.5mm, var 0mm], center = [var 0mm, var 0mm])
}
region005 = region(segments = [armCircleL.circle1])
hide(armCircleL)
leftArm = extrude(region005, length = armLen)
  |> translate(
       x = 0,
       y = -(rMiddle - armEmbed),
       z = zMiddleC + armZOffset,
       global = true,
     )
  |> appearance(color = "#6b4f2a", roughness = 60, metalness = 0)

// Small print base: diameter covers max of arm span and body footprint; extrude DOWN so top is clearly visible
armReachY = rMiddle - armEmbed + armLen
baseR = max([rBottom, armReachY]) + baseMargin
sketch003 = sketch(on = XY) {
  circle1 = circle(start = [var 71.8mm, var 0mm], center = [var 0mm, var 0mm])
}
region006 = region(segments = [sketch003.circle1])
hide(sketch003)
baseDisk = extrude(region006, length = -baseThk)
  |> appearance(
       color = baseColor,
       roughness = 70,
       metalness = 0,
       opacity = 60,
     )

// Collect parts into a flat array to be rotated
[
  middle,
  head,
  buttons,
  eyes,
  nose,
  hat,
  rightArm,
  leftArm
]
  |> rotate(axis = Z, angle = -90deg, global = true)


Snowman (stylized)

Zookeeper

Zookeeper: The Conversational CAD Agent For Parametric Modeling

Automation

Automating Your Workflow

File Formats

A Practical Overview of CAD File Formats

KCL: A Programming Language for Parametric CAD

Geometry Engine

Zoo CAD Engine Overview