SolidWorks Boss-Extrude and Cut-Extrude — Episode 4 Complete Beginners Guide (Updated June 2026)

If SolidWorks is a language, Boss-Extrude and Cut-Extrude are its most common verbs. Everything you model in SolidWorks starts with these two features — add material with Extrude Boss, remove material with Extrude Cut. What most beginners don't realize is that once you master these two features along with the sketch tools from episodes 2 and 3, you can already model 70% of the mechanical parts manufactured in Maharashtra's growing AURIC corridor — the ₹71,343 crore zone with 62,405 committed industrial jobs. Episode 4 is where your 2D sketch knowledge becomes a 3D engineering reality.

▶ Watch on YouTube

How Boss-Extrude Works — Turning a 2D Sketch into a 3D Solid

Boss-Extrude (often called Extruded Boss/Base on the Features toolbar) takes a 2D closed sketch profile and pushes it a specified distance in a direction perpendicular to the sketch plane, creating a solid body. It is the most fundamental 3D modelling operation in SolidWorks — and in virtually every other solid modelling software too, since extrusion is an universal CAD concept. To use it: draw your sketch on the Front, Top or Right plane (or a custom plane), close the sketch, click Extruded Boss/Base on the Features toolbar, type the extrude depth in the PropertyManager and click OK. The sketch becomes a solid. For your very first SolidWorks part, draw a rectangle 100mm × 60mm on the Front plane, extrude it 20mm Blind, and you have a rectangular block — the foundation of thousands of real industrial components.

End Conditions Explained — Blind, Through All, Up to Surface and Mid Plane

The End Condition dropdown in the Extrude PropertyManager controls how SolidWorks determines the stopping point of the extrude. Blind: extrudes a fixed distance that you type. Through All: extrudes until it exits the last face of the model — useful for hole cuts where the part thickness may change during design. Up to Surface: extrudes until it meets a selected face, plane or surface — used when the stopping face is complex geometry. Up to Next: stops at the next solid face it encounters. Mid Plane: extrudes half the distance in each direction from the sketch plane, keeping the sketch centred. Offset from Surface: extrudes to a specified offset from a selected face. For most beginner exercises, Blind and Through All cover 90% of use cases. Up to Surface becomes essential when you start working on multi-body parts and assembly-context features.

Cut-Extrude — Removing Material to Create Holes, Slots and Pockets

Cut-Extrude removes material using exactly the same sketch-driven process as Boss-Extrude. Select a face of your existing solid to sketch on, draw the cut profile (a circle for a hole, a rectangle for a slot or pocket), exit sketch, and click Cut-Extrude on the Features toolbar. The same end conditions apply — a Through All cut creates a through-hole regardless of part thickness; a Blind cut creates a blind hole (pocket) to a specified depth. A critical tip: when cutting a hole using a circle, make sure the circle is fully defined (by centre position and diameter dimensions) before cutting. An under-defined circle that slides around will produce a hole in the wrong location on the final part — the kind of mistake that costs a machining shop a scrapped component worth ₹800–₹2,000 in material and setup time.

Direction, Taper Angle and Thin Feature Options in Extrude

Three less-obvious options in the Extrude PropertyManager are worth knowing early. First: the Direction option — by default, Boss-Extrude pushes the sketch in the direction perpendicular to its plane. You can click "Direction 1" and select an edge or axis to extrude at an angle instead. Second: the Taper Angle (Draft Angle) option inside the Extrude dialog — this applies draft to the extruded walls without needing a separate Draft feature, which is handy for simple prismatic parts going into die casting. Third: Thin Feature — tick this checkbox and SolidWorks treats an open sketch (not closed) as the centreline or edge of a thin wall and applies a wall thickness. This is how you extrude I-beams, U-channels and structural profiles directly from open-path sketches without needing to manually close every profile.

Designing a Real Mechanical Bracket Using Only Extrude Features

Here is a complete bracket design exercise using only Extrude features — the same exercise we run in Episode 4. Step 1: Draw a 120mm × 80mm rectangle on the Front plane, extrude 15mm Blind (this is the base plate). Step 2: Select the top face of the base plate, draw a 100mm × 50mm rectangle centred on the face, extrude 40mm upward (the vertical wall). Step 3: Select the front face of the vertical wall, draw two 10mm-diameter circles at the correct positions, Cut-Extrude Through All (the mounting holes). Step 4: Select the base plate top face, draw four 6mm-diameter circles at the corner positions, Cut-Extrude 15mm Blind (the bolt clearance holes through the base). In 4 features and 4 sketches, you have a real engineering bracket ready for dimensioning and drawing creation in Episode 9.

Which Companies in Pune and Sambhajinagar Hire SolidWorks Part Designers?

Companies actively hiring SolidWorks part designers across Maharashtra's manufacturing belt include the following: In Pune, Tata Technologies at Hinjewadi Phase 1 posts openings for SolidWorks Design Engineers at ₹4–₹7 LPA for freshers and ₹9–₹15 LPA for engineers with 3–5 years of project experience. KPIT Technologies, Bajaj Auto at Akurdi (164+ engineering openings), Mahindra at Chakan, Force Motors and Mercedes-Benz R&D all recruit part designers with SolidWorks proficiency. In Sambhajinagar, Skoda Volkswagen at Shendra (Plot A-1/1), Bajaj Waluj (Plot G-137), Endurance Technologies (Plot E-92) and Toyota Kirloskar's AURIC facility maintain in-house design departments. In Sangli, the Kupwad MIDC belt and Sangli's SMMMA (250+ industries) support a steady demand for mechanical drafters and CAD designers at ₹3–₹5.5 LPA. Bharat Forge Kagal near Kolhapur and Lubrizol's ₹1,680 crore Maharashtra facility are additional strong employers. ABC Trainings centres in Wagholi, Hadapsar, Cidco, Osmanpura and Sangli are positioned to connect you directly with these opportunities.

FAQs

What is the difference between Boss-Extrude and Extruded Surface in SolidWorks?

Boss-Extrude creates a solid body (volume with mass). Extruded Surface creates a zero-thickness surface shell with no volume. Surfaces are used in industrial design and complex organic modelling where you need to control the shape without dealing with solid thickness. For all standard mechanical engineering parts — brackets, housings, shafts, gears — you will use Boss-Extrude to create solids. Surfaces are an advanced topic covered in SolidWorks Surface modelling courses.

Can I extrude two separate closed contours in one sketch to create two bosses at once?

Yes — if your sketch contains multiple separate closed contours, the Extrude PropertyManager lets you choose "Selected Contours" to extrude only specific loops, or it will extrude all non-nested contours by default. For example, a sketch with a large rectangle and a small circle inside both creates one solid body: the rectangle extrudes as the boss and the circle extrudes as a pin on top. This is called a multi-contour sketch and is very efficient for parts with multiple bosses sketched in one operation.

What happens if my sketch has an open contour when I try to Boss-Extrude?

If your sketch contour is not fully closed — even a tiny gap between endpoints — SolidWorks will either fail the extrude or generate a thin surface instead of a solid. Check for gaps by zooming in on each sketch corner or using Tools → Check Sketch for Feature to diagnose open contours. The Repair Sketch tool can automatically close very small gaps. If the gap is intentional (e.g., you want a Thin Feature extrude), tick the Thin Feature checkbox in the Extrude PropertyManager and specify a wall thickness.

Is the Cut-Extrude the same as a Hole Wizard in SolidWorks?

Cut-Extrude and Hole Wizard both create holes, but they work differently. Cut-Extrude uses a sketch circle (or any shape) to remove material with full control over the cut geometry and end condition. Hole Wizard is a specialised tool for creating standard engineering holes — clearance holes, tapped holes, counterbore and countersink holes — with the correct geometry for standard fastener sizes (M6, M8, M10 etc.). Hole Wizard automatically adds the correct diameter, depth, thread type and head clearance dimensions. For standard fastener holes, always use Hole Wizard — it saves time and ensures your holes meet the correct ISO or ASME standards that your manufacturing partners expect.