# Step-by-Step SolidWorks Solution for Problem 2 Below is a **step-by-step guide** to create the 3D model as shown in the drawing using **SolidWorks**. This includes how to sketch, extrude, cut, and dimension the part. All dimensions are in **MMGS** (millimeter, gram, second). --- ## **Step 1: Analyze and Plan** - **Shape:** The part consists of a main rectangular body, a semi-cylindrical back, a front slot, and a circular hole. - **Main Features:** - Rectangular base - Semi-circular back - Front fork/slot - Hole through the semi-cylinder --- ## **Step 2: Create Main Body (Rectangular Section)** 1. **Start a new part** in SolidWorks. 2. **Front Plane → Sketch** - Draw a rectangle: **Length = 450 mm**, **Height = 225 mm**. - **Extrude** the rectangle to a **thickness of 100 mm**. --- ## **Step 3: Add Semi-Cylinder at the Back** 1. **On the left face** (back side), start a new sketch. 2. Draw a **semi-circle** with: - **Radius = 150 mm** (centered vertically on the left face, at mid-height: 112.5 mm from base). - **Draw horizontal line** connecting the ends of the semi-circle to form a closed region. 3. **Extrude Cut** (remove) the material outside the semi-circle, or **Extrude Boss/Base** if you prefer to add the semi-cylindrical feature as material. - **Depth = 100 mm** (same as part thickness). --- ## **Step 4: Add Front Fork/Slot** 1. **Front face → Sketch** 2. Draw two rectangles to represent the slots: - Each slot: **Width = 50 mm**, **Height = 125 mm**, **Spacing = 75 mm** between slots, as per dimensions. - The slots start **100 mm** from the bottom. 3. **Extrude Cut** through all to remove the fork slots. --- ## **Step 5: Add Center Hole** 1. **On the semi-cylindrical face (back) → Sketch** 2. Draw a **circle**: - **Diameter = 100 mm** - Centered at the origin of the semi-circle (i.e., 112.5 mm above the bottom and 150 mm from the left edge) 3. **Extrude Cut** through all. --- ## **Step 6: Dimension and Finalize** - **Add all necessary dimensions** to fully define sketches. - **Check all measurements:** - Total length: **450 mm** - Overall height: **225 mm** - Thickness: **100 mm** - Fork slot widths: **50 mm each** - Spacing: **75 mm** between fork arms - Slot height: **125 mm** - Back semi-cylinder: **R150 mm**, **hole Ø100 mm** --- ## **Step 7: Save and Export Drawing** - Save your part as `Homework 3 Problem 2 Last Name`. - **Create drawing** from part, add top/front/right views, and fully dimension as per conventions. --- ## **Summary Table of Key Dimensions** | Feature | Dimension | |----------------------|----------------| | Overall Length | 450 mm | | Height | 225 mm | | Thickness | 100 mm | | Semi-Cylinder Radius | 150 mm | | Hole Diameter | 100 mm | | Slot Width | 50 mm (each) | | Fork Opening | 75 mm | | Slot Height | 125 mm | | Slot Position | 100 mm from bottom | --- ### **Final Answer** Follow the above steps to construct the part in SolidWorks. Your final model should match the provided dimensions and features. The drawing file should have all required views and be fully dimensioned. **If you need a written description for a report:** > The part consists of a 450 mm x 225 mm x 100 mm rectangular block, with a semi-cylindrical back (R150 mm), a central circular hole (Ø100 mm), and a forked front with two 50 mm wide slots (125 mm tall, spaced 75 mm apart), starting 100 mm from the bottom face. --- **If you have any questions about a specific step, let me know!**