adding images

Readme.md

@@ -80,6 +80,7 @@ Given a model, generate the cam paths necessary to produce the piece on a millin
 * Three types of surfacing - facing, etching, 3D contouring
 * Learn to work with 2D and 3D models
 
+![Class4](./class4.png)
 **Exercise - Face Milling**
 
 Create a parametric file useful for milling surfaces of any size.
@@ -100,6 +101,8 @@ Learn to work with 3D Contours in a simple simulation of work for an Architecura
 * Work with Vector files (Illustrator, Inkscape)
 * Work with STEP files (Rhino, Fusion 360, Solidworks)
 
+![Class5](./class5.png)
+
 **Exercise - TTL Sign**
 
 Learn how to prepare interchange files for success in CNC milling. Create and cut the TTL sign by working with SVG files.
@@ -115,6 +118,7 @@ Learn to design and mill interlocking parts
 Use Construction Geometry
 Understand sub-shape binders
 
+![Class 6](./class6.png)
 ### Final Assignment - Cleat Wall Organizer
 
 Using what you have learned and a template, create a cleat-wall organizer that you’ll be able to arrange and mill on your own. Book a time to review and cut the assignment!