Added few images of lasers and settings to previous weeks groupwork

docs/group_assignments/group2/assignment3.md

@@ -50,6 +50,14 @@ Schematic figure
 As shown in the schematic figure, when the focus is above the laser need to burn more material, 
 the energy is deposited to larger volume. This is probably the reason that the 4mm above did not cut.
 
+The laser cutter is 75 watt Epilog laser fusion
+![laser](./assets/assignment3/laser.jpg)
+
+The settings for the cutter could be loaded from the menu
+![lasersettings1](./assets/assignment3/lasersettings1.jpg)
+
+The settings for the cut and engrave 3mm HDF material are shown below
+![lasersettings2](./assets/assignment3/lasersettings2.jpg)
 
 ## Testing the effect of laser cutting speed and power