Tutorial Advanced ⏱ 25 minutes

Complete CNC Profile from Drawing

Build a complete CNC milling profile from a dimensioned drawing — the full workflow from reading dimensions to generating CAM-ready geometry.

What You Will Build

A complete component profile with straight edges, fillet arcs, a circular boss, and a slot — demonstrating the full XyzPilot workflow from drawing to CAM-ready geometry.

Operators Used

Point/X,Y Line/P,P Arc/Fillet,L,L Circle/Centre,R Trim/L,to,A Point/Intof,L,C

Read the Drawing and Plan the Construction

Before starting, identify all geometry types in the drawing and plan the construction sequence.

Component dimensions (from drawing):
  Overall: 120×80mm
  Left boss: circle R=20mm at (25,40)
  Right slot: 30×20mm rounded slot at (90,40)
  Corner fillets: R=8mm at all four corners
  Central hole: R=10mm at (60,40)

Construction sequence:
  1. Create outer rectangle
  2. Add corner fillets
  3. Create left boss circle
  4. Create central hole
  5. Create right slot
  6. Trim and clean up

Create the Outer Rectangle

Create the base rectangular outline.

Rectangle/P_TL=(0,80), P_BR=(120,0)
→ L0: bottom, L1: right, L2: top, L3: left

Add Corner Fillets to the Rectangle

Create 8mm radius fillets at all four corners.

Arc/Fillet, L3, L0, R=8  → A0  [bottom-left]
Arc/Fillet, L0, L1, R=8  → A1  [bottom-right]
Arc/Fillet, L1, L2, R=8  → A2  [top-right]
Arc/Fillet, L2, L3, R=8  → A3  [top-left]

Trim all 8 corners (as in Tutorial 1)

Create the Left Boss

Create the circular boss on the left side of the component.

P_boss = (25, 40)  [boss centre]

Circle/Centre, P_boss, R=20, 0
→ C0: left boss, diameter=40mm

Note: The boss extends beyond the rectangle outline.
The intersection of C0 and the rectangle defines the boss profile.

Create the Central Hole

Create the central clearance hole.

P_hole = (60, 40)  [hole centre]

Circle/Centre, P_hole, R=10, 0
→ C1: central hole, diameter=20mm

Create the Right Rounded Slot

Create the rounded slot on the right side.

Slot: 30mm long, 20mm wide, centred at (90,40)
  Left arc centre:  (75, 40)
  Right arc centre: (105, 40)
  Top line: Y=50, Bottom line: Y=30

Line/Parlel, XAxis, D=50  → L4: slot top
Line/Parlel, XAxis, D=30  → L5: slot bottom
Circle/Centre, (75,40), R=10  → C2: left slot arc
Circle/Centre, (105,40), R=10 → C3: right slot arc

Trim lines to circles, trim circles to semicircles

Trim and Finalize the Profile

Trim all geometry to create the final closed profile.

Trim boss circle C0 to rectangle outline
Trim rectangle lines to boss circle
Verify all entities connect end-to-end

Final profile entities:
  Rectangle outline (trimmed) + boss arc + fillets
  Central hole C1 (separate closed profile)
  Slot profile (separate closed profile)

All three profiles ready for CAM setup.

The component has three separate closed profiles: outer boundary, central hole, and slot. Each requires its own CAM toolpath.

Tips & Best Practices

Always read the complete drawing before starting — identify all geometry types first.
Build complex profiles in layers: outer boundary first, then internal features.
Each closed profile (outer, holes, slots) requires a separate CAM toolpath.
Use Measure → Entity Info to verify all dimensions match the drawing.
Use the Toolpath Simulator to verify all toolpaths before machining.