1- Set the parameters of the design from modefy - change parameters, set the width and hight of the box (200mm X 100 mm), set the kerf (0.2 mm), set the thickness (3 mm), and set the width of the tab (20 mm).
2- Start a new sketch, draw a 2 point rectangle with the parametric dimensions
3- Sketch two construction lines, make sure they're at the middle of each rectangle lines.
4- Sketch a 2 point rectangle inside the first rectangle (hole) on its side and set the dimentions (tab width - kerf) (Thickness)
5- Repeat the previous step for another hole
6- Set dimensions to constrain the design, the first hole is 20mm away from the center, and the second hole is 20mm away from the first hole
7- Go to sketch - Mirror, to mirror the two holes along the line, and then mirror the 4 holes to the opposite side as well. (the construction lines are used as mirror lines)
8- At the bottom, Sketch a 2 point rectangle inside the first rectangle, but don't sketch it on the side, sketch it 3mm (Thickness) away from the side and set the dimentions to constrain the design . set the dimentions (tab width - kerf) (Thickness)
9- Set dimensions to constrain the hole, make it 15mm away from the center.
10- Mirror the hole along the line, and then mirror the 2 holes to the opposite side as well. (the construction lines are used as mirror lines)
11- Stop sketch, select the body and extrude a new component at 3mm or thickness
12- We can mirror the new component by constructing an offset plane from constrcute - offset plane and setting it to the middle, and then selecting the component and creating a mirror for it.
13- we can repeat all the previous steps for the rest of the sides, with a few exceptions:
14- For the top and bottom, repeat the previous steps with the following exceptions:
15- Assembly the 6 sides by rigid joints. Go to Assemble - joints , then select an origin point on a teeth and then on a hole and then, they will join. repeat this for the rest of the sides.
16- once the box fits, go to each sketch and trim any construction lines, lines around the holes. Save all sketches as DXF files to be printed on a laser cutter.
17- Use the laser cutter software to setup the sketches. Make a copy of each sketch so you can have 6 sides, make sure they fit on the 3mm plywood sheet, set power and speed (p= 50 s= 20) download the file, go to the laser cutter, select an origin point, check the time of printing, start priniting.