added pics

UrumbotXYZ/README.md

@@ -7,3 +7,13 @@ Build frame for slightly smaller machine designed to mill in a 150x150x50 mm vol
 
 <img src=./img/xyz_frame.jpg width=40%>
 
+###  Mar 14-20, 2022.
+
+Assemble and tweak tension to try milling.
+
+<img src=./img/z_axis.jpg width=40%>
+
+<img src=./img/assembled.jpg width=40%>
+
+<img src=./img/integrated.jpg width=40%>
+