Fixture Block

First, I made a rectangle as my base of my drawing and started by smart dimensioning the entire rectangle. Next, I cut the corner off at the bottom, I cut the line on the right side of the rectangle, I smart dimensioned everything on the right side in order to start the circles and slot on the base of the shape. After that, I made the 2 circles and the slot in between the two circles that I created. Next, I 3D sketched lines to extrude to the other side to make the rest of the shape and smart dimensioned them. Next, I completed the left side of the block. Afterwards, I moved up to the top of the shape and created a half circle and extruded it downwards 20mm to make the hole in the left side of the block. Then, I created another circle on the left side on the top to extrude the whole front of the block. After, I changed my material to 1060 Alloy. Then, I made a plane to cut out some of the front circle so I sketched some lines in order to extrude cut part of the circle that I extruded, out. Finally, I calculated the mass which was over by a couple grams so I had to re-evaluate it and fix it.