spectraCAD

spectraCAD Engraver Assessment

You will draw the part shown above. It includes a material outline, an inner boundary, and three islands. The islands form the letters C, A, and D.

New Drawing

• File>New

Setup

• Engraving>Engraving Setup

  • Stock Size tab. Change to 3" x 2" x 1.5"

• Edit>Layer

  • Add Layer

  • Name it "Contours"

  • Change the color to "Red".

Draw the Outer Border

• Draw>Rectangle

• Starting at coordinate 0,0 (Bottom left corner), move to the upper right corner and click to create a rectangle.

Draw the Inner Boundary

• Select Offset from the Modify Menu.

• Select the rectangle as the entity to offset. Once selected, the rectangle appears dashed, and the offset appears. Moving the cursor changes the size of the offset.

• Set the offset distance: Click the Type button. The Enter Offset Distance dialog box appears.Enter .25 as the offset value, then click OK or press Enter

• .Click the left mouse button to except.

• Select Fillet from the Modify Menu.

• Set the fillet radius: click the Type button, and the Enter New Fillet Radius dialog box appears. Type .125, then click OK or press Enter.

• Click the Save button on the toolbar, or select Save from the File Menu, or press Ctrl + S. The File Save As dialog box appears.

• Navigate to your CNC folder

• Type the name, CAD.dxf, into the File Name field.

• Click OK or press Enter.

Draw the “Letter” Islands

The C, A, and D are called “islands” because the material surrounding them is machined, but the material inside them is not. They will appear raised on the machined part, just as islands are raised above the ocean's surface.

• Draw the "C" in similar way as the C was drawn in the LMC file. Using Lines, Copy, Arcs, Offsets and Trim/Extend

• Draw the "A" using the Mirror technique in a same way you drew the "M" in the LMC file.

• Draw the "D" using the Line, Offset and Trim commands.