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grabcad

First, I started by making a line 150mm long and making a line 20mm tall and connecting another line to 60mm and making a circle that was 10 for the radius and connected that circle with a line on top and made another line 10mm. Next, I made the 2 circles in the center 30mm and 20mm and made sure they were 100mm apart. Then, I made sure the line connecting the two 30 radius circles that would be 70 degrees apart from the bottom line and made 2 arcs making it 30 for the radius. Then, I made the big circle, a perimeter circle to 300 and trimmed everything on the right side that needed to be trimmed and extruded it to 100mm, I changed my material to titanium and checked my mass to be perfect. Moving onto part 2, I started by making another circle around the one I already made and made a centerline and made one down to 4mm and made a line on the design and extrude cut it 20mm and did the same thing on the other side. Then I sketched what I need to extrude cut it so I made a line at the top left point to 25mm and made a horizontal line 150mm and a line straight down to 50mm and made a box so it connects in order to extrude cut it and afterwards I checked my mass to come out exactly what I needed it to be. Finally, part 3, I converted the entities and made them offset by 2mm and cut extrude it 10mm inwards and checked the mass and it was exactly 4601.32 grams.