SOLIDWORKS

Model a two-stroke engine cylinder block part

Software: SOLIDWORKS
Platform: Windows
Length: 1 h 27 min
Resolution: 2560 × 1600
Output: SLDPRT, STEP, X_T

Samples play on a computer

87min

2Kclicks

378keys

Windows

Task

Build a single-part 3D solid model of a model-engine cylinder block (two-stroke engine body) from the supplied dimensioned diagrams: diagram_01.png and its details diagram_01_detail01.png to diagram_01_detail04.png. The diagrams show top, front, right side and isometric views. Work in millimetres.

The block is one solid body with an overall envelope of 131.1 x 108 x 80 mm. It has these elements:

Crankcase. A revolved crankcase with an internal revolved cavity, an integral side boss and a revolved front housing (R26 / R25 per the right side view).
Cylinder barrel. An 80 mm square-section barrel with R10 corner fillets and a through cylinder bore of Ø40.
Cooling fins. Four 2 mm thick cooling fins patterned at 6 mm spacing. Three 2 mm lower side fins, also patterned at 6 mm.
Head flange. A thin head flange with four head bolt bosses and 4x Ø4 head bolt holes.
Exhaust stack. A revolved, bored exhaust stack, joined to the crankcase by a 4 mm connecting web and an upper boss of Ø12.
Mounting lugs. Two 5 mm mounting lugs with mirrored Ø8 mounting holes (R4 on the front view).
Side tabs. A pair of mirrored 5 mm side tabs, each with an R5 end and a Ø6 hole.
Blend fillets. Apply blend fillets of R1 to R5 where shown, including R4 crankcase edges, R5 side boss blends and R2 web, bore and cavity blends.

Follow the figured dimensions on the diagrams: 22.1 / 38 / 26 / 45 and 108 (48 / 36.5 / 23.5) in the top view, 80 (26 / 28 / 26) and 131.1 (22.1 / 21.5 / 23.5 / 64) in the front view, and 25 / 56 / 27 in the right side view.

Model it professionally:

Give every sketch and feature a descriptive name, for example "Crankcase Revolve", "Cylinder Bore Ø40" and "Cooling Fin Pattern 4x6mm".
Fully define the sketches.
Use revolves for the rotational features, linear patterns for the fins and mirrors for the symmetric holes and tabs.
Assign the material Plain Carbon Steel.
Add these custom properties: Description (a short description of the cylinder block), PartNo = "Engine-Cylinder-Block" and Material = "Plain Carbon Steel".
Keep a single Default configuration.

ReferenceSheet 1

Loading the drawing

Rubrics16

R1
The model shall be a single solid body with an overall bounding box of 131.1 x 108 x 80 mm.
R2
The model shall use millimetres as its unit system.
R3
The model shall contain a revolved crankcase feature with a revolved-cut internal crankcase cavity.
R4
The model shall contain a cylinder barrel extruded 80 mm with R10 corner fillets.
R5
The model shall contain a through cylinder bore of Ø40.
R6
The model shall contain 2 mm thick cooling fins arranged in a linear pattern of 4 instances at 6 mm spacing.
R7
The model shall contain 2 mm lower side fins arranged in a linear pattern of 3 instances at 6 mm spacing.
R8
The model shall contain four Ø4 head bolt holes in head bolt bosses at the cylinder head flange.
R9
The model shall contain a revolved exhaust stack and a revolved front housing, each with a bore.
R10
The model shall contain 5 mm mounting lugs with Ø8 mounting holes mirrored about the part's symmetry plane.
R11
The model shall contain mirrored 5 mm side tabs, each with a Ø6 hole.
R12
The model shall contain a 4 mm connecting web and a Ø12 upper boss between the crankcase and the exhaust stack.
R13
The model shall have the material Plain Carbon Steel assigned, giving a mass of approximately 1.10 kg.
R14
The model shall carry custom properties PartNo = "Engine-Cylinder-Block" and Material = "Plain Carbon Steel", plus a Description property.
R15
The model shall use descriptive feature names in the feature tree, such as "Crankcase Revolve" and "Cylinder Bore Ø40", rather than default names.
R16
The model shall contain a configuration named Default.

Gold outputEngine-Cylinder-BlockSLDPRT, STEP, X_T

Drag to turn, then scroll to zoom

00:00 / 1:27:10

Events12,551

00:00.011Move710, 845 → 711, 845

00:00.043Move712, 845 → 837, 731

00:01.187Click837, 731

00:01.314Move837, 733 → 798, 802

00:01.602AppSolidWorks

00:01.619Move797, 802 → 793, 796

00:02.307Move794, 796 → 821, 820

00:02.395Move824, 822 → 944, 882

00:02.499Move976, 894 → 1018, 910

00:02.530Move1034, 917 → 1385, 982

00:02.683Move1404, 982 → 1520, 974

00:02.795Move1523, 974 → 1528, 987

00:03.155Move1528, 988 → 1528, 990

00:03.179Move1530, 990 → 1836, 1133

00:04.099Click1836, 1133

00:04.211Move1836, 1133 → 1760, 1030

00:05.148AppAMD Software: Host Application

00:05.171Move1760, 1030 → 1764, 1037

00:05.347Move1764, 1038 → 1764, 1042

00:05.523Click1764, 1042

00:05.603Move1764, 1042 → 1765, 1040

00:05.651Move1767, 1040 → 1768, 1034

00:05.707Move1768, 1033 → 1764, 1016

00:05.779Move1761, 1010 → 1082, 890

00:06.955Move1078, 887 → 114, 407

00:08.651Click114, 407

00:08.882Move115, 406 → 133, 394

00:09.291Click133, 394

00:09.587Move140, 392 → 992, 950

00:10.339Move994, 950 → 1100, 977

00:10.747Move1099, 978 → 388, 802

00:11.931Move380, 794 → 158, 97

00:16.483Move156, 97 → 148, 97

00:17.730Move147, 97 → 142, 97

00:18.051Move141, 97 → 139, 89

00:19.196Click139, 89

00:19.291Move140, 91 → 211, 148

00:19.394Move280, 192 → 314, 212

00:19.419Move381, 257 → 448, 300

00:19.444Move484, 322 → 894, 630

Loading events

Narration500

00:00
Opened SOLIDWORKS, selected a new Part document, and waited for the Part1 workspace to load.
Start a new SOLIDWORKS part.
00:05
Dismissed the units menu, selected the Front Plane in the FeatureManager, and entered Sketch1.
Begin a sketch on the Front Plane.
00:10
Activated the Line tool and positioned the sketch cursor within the Front Plane to begin drawing.
Create sketch geometry.
00:19
Drew connected horizontal and vertical line segments, forming the initial stepped profile on the Front Plane.
Construct the outline of the part profile.
00:30
Continued drawing connected segments to complete the stepped outline, then selected the resulting sketch region.
Finish the closed sketch profile.
00:39
Exited the active line operation, selected the left portion of the profile, and added a horizontal dimension displaying 70.34 mm.
Constrain the sketch geometry with a dimensional measurement.
00:50
Entered 60 in the Modify dialog for a sketch dimension and confirmed it, updating the left horizontal dimension to 60.00 mm. Clicked in the sketch area and selected sketch geometry afterward.
Set the left horizontal sketch dimension to 60 mm.
00:58
Selected another sketch dimension, edited it, and confirmed the change; the right-side horizontal dimension displayed 84.68 mm before the dimension selection was cleared.
Adjust a right-side horizontal sketch dimension.
01:09
Edited the selected horizontal dimension by entering 40 and confirming it. Selected sketch geometry and left the profile showing a 40.00 mm right-side horizontal dimension.
Set the intermediate right-side horizontal dimension to 40 mm.
01:22
Selected the outer-right sketch dimension, entered 20 in the Modify dialog, and confirmed the value.
Set the outer-right horizontal sketch dimension to 20 mm.
01:27
Selected sketch geometry and applied or confirmed a 20.00 mm horizontal dimension on the right side, then selected the vertical profile edge and continued dimensioning.
Establish the right-side spacing and prepare the profile for a vertical dimension.
01:35
Entered 50 in the Modify dialog and confirmed it, setting the right-side vertical dimension to 50.00 mm. Selected the left vertical edge afterward, leaving another vertical measurement displayed at approximately 60.15 mm.
Set the right-side vertical sketch dimension to 50 mm.
01:44
Edited a sketch dimension through the Modify dialog, entered 50, and confirmed it; then adjusted the view while the stepped sketch remained open.
Set a sketch dimension to 50 mm and review the updated profile.
01:50
Opened another sketch dimension, entered 30 in the Modify dialog, and confirmed it; then selected and repositioned sketch annotations or geometry in the drawing area.
Set the selected sketch dimension to 30 mm and refine its displayed placement.
02:02
Opened a further sketch dimension, replaced its value with 30, and confirmed it; then selected the resulting dimension and adjusted its placement, leaving the sketch fully defined.
Set another sketch dimension to 30 mm and finish constraining the profile.
02:15
Attempted to create a Revolve feature from the open sketch; acknowledged the prompt to automatically close the sketch, then displayed the Revolve preview with Line1 as the axis and 360 degrees.
Create a revolved solid from the completed stepped sketch.
02:26
Rotated and adjusted the Revolve preview, then completed the feature; the document changed to Part1 and the FeatureManager displayed Revolve1 with a solid body.
Finalize the revolved part and inspect the resulting model.
02:36
Rotated and zoomed the completed part through several view adjustments, inspecting the stepped cylindrical form from multiple angles.
Review the finished revolved model.
02:48
Rotated the SOLIDWORKS part model through several views using middle-button interactions and adjusted the view with scrolling.
Inspect the model from different angles.
02:59
Continued rotating and repositioning the part, moving it lower in the viewport and selecting the right cylindrical end near the end of the interval.
Examine and select a model face or component.
03:08
Rotated the part through multiple orientations and adjusted the view, ending with the stepped cylindrical body shown from the opposite side at a smaller scale.
Review the model geometry from additional angles.
03:17
Continued manipulating the model view, then entered Sketch2 on the Top Plane through the FeatureManager.
Open Sketch2 for editing on the Top Plane.
03:28
Activated the Line tool in Sketch2 and began positioning a sketch line over the top-plane model view.
Create sketch geometry in Sketch2.
03:39
Continued drawing connected line segments in Sketch2 to form a tapered quadrilateral-like profile on the left body, canceled or exited active line operations with Escape, and left a vertical dimension of 32.88 visible.
Construct and dimension sketch geometry.
03:52
Entered 40 mm in the Modify dialog for a Sketch2 dimension and confirmed it, then clicked around the sketch while the updated 40.00 dimension remained visible.
Set the selected Sketch2 dimension to 40 mm.
04:01
Selected another Sketch2 dimension, entered 10 mm in the Modify dialog, and confirmed the value; then clicked the sketch and dismissed the active selection.
Set a second Sketch2 dimension to 10 mm.
04:11
Selected sketch geometry and used the relation toolbar to apply an equal-length relation to two lines, leaving the selected lines highlighted.
Constrain related sketch lines to equal length.
04:21
Zoomed and panned across the sketch, clicked the model face and sketch entities, and changed the active selection to the large face.
Inspect and select sketch or model geometry for further editing.
04:32
Adjusted the view and clicked sketch entities, then selected two lines so the relation toolbar appeared with Equal available.
Select related sketch lines for constraint editing.
04:42
Zoomed into the upper-right sketch vertex, clicked the point and nearby geometry, and left Point1 selected.
Inspect or select the sketch vertex and its coincident geometry.
04:52
Reviewed the active Sketch2 view, clicked within the model area, and left the sketch geometry visible on the revolved part.
Inspect the current sketch and model view.
05:02
Adjusted the view and selected sketch geometry, then dragged and clicked to manipulate the displayed dimension or entity; returned to the sketch with the 40.00 and 10.00 dimensions visible and a 10.51 measurement shown.
Inspect and adjust sketch dimensions or geometry.
05:15
Entered 5 in the active dimension field and confirmed it, then zoomed and selected the dimension; displayed the updated 5.00 dimension while the sketch became fully defined.
Set the selected sketch dimension to 5 mm.
05:24
Rotated the model using middle-button interactions and switched from the Sketch tools to Features, leaving the revolved part in a 3D view with the sketch outline and dimensions visible.
Review the completed sketch in the 3D model context.
05:34
Selected the sketch profile and opened Boss-Extrude, displaying a yellow extrusion preview with Blind end condition and a 10.00 mm depth; clicked within the feature controls while keeping the preview active.
Create an extruded boss from the sketch profile.
05:46
Changed the Boss-Extrude depth to 80.00 mm, rotated the model to inspect the extrusion preview, and left the feature preview active.
Adjust and inspect the extrusion depth before confirming the feature.
05:54
Selected several model edges while the Fillet tool remained open, then clicked in the graphics area.
Select geometry for a fillet operation.
06:06
Selected additional edges for the fillet and displayed the yellow full-preview fillet on the part, then accepted the feature; the model returned to the normal view with Fillet1 in the feature tree.
Create and confirm the rounded-edge feature.
06:13
Rotated and zoomed the completed part in the graphics area, inspecting the new rounded edges from several angles.
Review the completed fillet geometry.
06:24
Continued rotating and zooming the part, changing from a front-side view to an underside and rear-side inspection view.
Inspect the model from additional viewpoints.
06:33
Rotated and zoomed the part repeatedly, moving through side and angled views and briefly selecting a circular end face.
Examine model surfaces and the filleted result.
06:43
Zoomed closely onto the circular end face and adjusted the view while keeping that face selected.
Inspect the selected circular face and nearby geometry.
06:53
Rotated and zoomed the SOLIDWORKS model with middle-clicks and scroll gestures, changing from an angled view to a close view of the cylindrical end and surrounding filleted body.
Inspect the part geometry from different angles.
07:03
Entered Sketch3 on the part and selected the rounded front face as the sketching region, then activated the line tool.
Prepare Sketch3 for adding sketch geometry on the front face.
07:14
Worked in Sketch3, used the rectangle tool, and zoomed in on the front face while positioning sketch geometry around the existing rounded profile.
Create construction or reference geometry around the front-face profile.
07:25
Drew a large centered rectangle over the front face using the Rectangle tool, leaving its construction diagonals visible and the sketch under defined.
Add a rectangular sketch profile around the existing face.
07:35
Selected the rectangle’s line entities and adjusted or inspected them with the sketch controls, then cleared the selection while keeping the rectangle and diagonal construction lines visible.
Refine or constrain the rectangular sketch geometry.
07:45
Zoomed and repositioned the sketch view, selected a rectangle edge, and displayed its line properties with a vertical relation and length value.
Inspect and constrain the selected rectangle edge.
07:55
Opened and edited Sketch3 in SolidWorks, selected the outer rectangular sketch geometry, and added or adjusted a vertical dimension that displayed approximately 74.20 mm.
Define the outer sketch size.
08:09
Modified the selected sketch dimension by entering 65 and confirming it, changing the displayed vertical dimension to 65.00 mm; zoomed in and exited the dimension edit.
Set the sketch height to 65 mm.

08:18
Exited the active dimension interaction and selected sketch geometry while viewing the 65.00 mm dimension; adjusted the view and left the sketch fully defined.
Review and constrain the sketch geometry.
08:27
Zoomed and panned around the sketch, selected the rounded inner profile briefly, then returned to a wider view of the part and outer construction rectangle.
Inspect the constrained sketch profile.
08:40
Switched briefly through Windows Explorer and the recorder, then returned to SolidWorks and activated the Arc tool while zooming the part view out.
Prepare to add arc geometry to the sketch.
08:49
Used the Arc tool to place a curved segment across the top of the outer sketch area, then selected the resulting arc for editing.
Create a top arc in the sketch.
08:59
Exited the transient selection state, zoomed and scrolled around Sketch3, and clicked sketch geometry while reviewing the 65 mm profile and upper arc.
Inspect and position the sketch geometry for dimensioning.
09:08
Scrolled and repositioned the sketch view, then selected the upper arc/endpoint region to expose a distance readout of approximately 5.63 mm.
Select sketch geometry and inspect its spacing before editing a dimension.
09:22
Opened the Modify control, entered 5, and confirmed the value; then zoomed and selected the upper-right sketch dimension/geometry for further editing.
Set or adjust a sketch dimension to 5 mm.
09:32
Edited the selected dimension through the Modify dialog, entered 5, and confirmed it; then zoomed out to review the fully defined sketch with 5.00 mm annotations at both upper ends.
Apply the second 5 mm constraint and verify the sketch becomes fully defined.
09:42
Scrolled to frame the part, opened Circular Pattern, and selected a sketch point/geometry as the entity to pattern while leaving the pattern preview active.
Begin creating a circular pattern from the sketch geometry.
09:51
Selected the arc for the circular pattern and adjusted the view; the preview displayed four instances evenly spaced over 360° around the sketch center.
Configure and preview a four-instance circular pattern.
09:59
Clicked around the SolidWorks interface, briefly hid and restored the application, and left Sketch3 visible with the fully defined dimensioned profile over the part.
Continue working with the dimensioned sketch profile.
10:09
Switched from the Sketch tab to Features and opened the Boss-Extrude command, leaving its preview and PropertyManager visible with an 80.00 mm blind extrusion and thin-feature settings.
Create an extruded boss from the selected sketch region.
10:19
Rotated the model and selected a sketch region for the Boss-Extrude preview, changing the view to inspect the translucent extrusion around the rounded-square profile.
Inspect and select the intended extrusion region.
10:30
Rotated and zoomed the model while selecting additional sketch regions, updating the translucent Boss-Extrude preview around the front profile.
Refine the selected extrusion contours and inspect the preview.
10:39
Continued rotating the model and clicked the front sketch area, leaving the rounded-square region highlighted in the Boss-Extrude preview.
Review the selected contour before completing the extrusion.
10:48
Rotated and zoomed in on the part while keeping the sketch regions selected, enlarging the translucent extrusion preview and dimensioned profile for inspection.
Inspect the extrusion preview from different orientations.
10:58
Adjusted the SolidWorks view and selected different sketch regions while previewing the Boss-Extrude feature on the rounded-square profile.
Inspect or refine the extrude profile and selected contour.
11:08
Changed the Boss-Extrude depth from 80 mm to 177 mm, inspected the resulting extrusion preview, and exited the feature-edit display back to the model tree.
Test the extrusion depth and review the resulting solid.
11:17
Selected Sketch3 in the feature tree and changed the sketch selection state, leaving the rounded-square sketch highlighted on the part.
Select and inspect Sketch3 geometry.
11:28
Reopened the Boss-Extrude editing panel, selected Sketch3 and a sketch region, and rotated the model to inspect the extrusion preview from front and angled views.
Review the selected contour and extrusion preview from multiple orientations.
11:41
Selected multiple sketch regions and rotated and zoomed the model, updating the translucent Boss-Extrude preview around the rounded-square face.
Inspect the combined contour selection and preview geometry.
11:51
Rotated and zoomed the active Boss-Extrude preview, then clicked the depth field and entered 2.
Begin editing the extrusion depth.
12:02
Opened the Boss-Extrude feature, adjusted the view of the part, and exited the feature preview to return to the model tree.
Review or modify the selected extrusion feature.
12:13
Opened Linear Pattern, selected Boss-Extrude2 as the patterned feature, and displayed the pattern preview on the part.
Create a linear pattern from the selected boss extrusion.
12:23
Selected Front Plane as the pattern direction, rotated the model to inspect the preview, and edited the pattern settings.
Configure the direction and spacing for the linear pattern.
12:38
Changed the pattern spacing to 6 mm, opened the selection context menu, and continued editing the pattern direction selection.
Refine the linear pattern parameters and selections.
12:48
Selected Top Plane, changed the instance count to 4, and rotated and zoomed the model while reviewing the resulting pattern preview.
Finalize the pattern direction and number of instances.
12:59
Opened the warning for LPattern1, reviewed the message that some feature instances were disjoint and would not be created, and opened the feature context menu.
Inspect and address the linear pattern feature error.
13:05
Confirmed deletion of the Linear Pattern feature, then opened the Linear Pattern command again and displayed its parameters on the model.
Recreate or edit the deleted linear pattern feature.
13:14
Selected Boss-Extrude2 as the pattern feature and selected a model reference for Direction 1, leaving the Linear Pattern preview active.
Define the feature and direction for a new linear pattern.
13:26
Selected Top Plane for Direction 1 and adjusted the linear-pattern setup, producing a preview of repeated geometry on the end face.
Configure the pattern direction and inspect the resulting preview.
13:35
Continued adjusting the Linear Pattern preview and viewing the repeated instances from different angles while keeping Top Plane as Direction 1.
Review the pattern spacing and instance arrangement before accepting it.
13:46
Accepted the linear pattern and returned to the model, where multiple repeated plate-like features appeared; then zoomed and rotated the part to inspect the result.
Create the configured pattern and verify the modeled result.
13:56
Rotated and zoomed the completed part through several views, inspecting the repeated end features and surrounding cylindrical body.
Visually review the completed patterned geometry.
14:12
Rotated and zoomed the piston model in the SolidWorks viewport, changing from a close-up of the ringed top to a smaller full-part view.
Inspect the model from different viewpoints.
14:22
Rotated and zoomed toward the piston rings, then selected a ring edge or face, highlighting the ring components in blue.
Inspect and select geometry around the piston rings.
14:32
Adjusted the view around the piston crown and selected additional ring geometry, leaving multiple ring bands highlighted and measurement guides visible.
Review the ring pattern and related geometry.
14:42
Rotated the piston to a side and underside angle, clicked ring edges and faces, and highlighted a lower ring band with measurement graphics.
Inspect the lower piston-ring geometry from another angle.
14:53
Continued rotating and selecting the piston-ring geometry, then opened the Reference Geometry menu and displayed options including Plane, Axis, Coordinate System, Point, and Bounding Box.
Begin creating or inspecting reference geometry for the part.
15:03
Selected Plane from the Reference Geometry tools, picked a model face, entered 8 and confirmed it, then adjusted the view while the Plane feature panel showed a fully defined plane.
Create and define a reference plane on the piston model.
15:12
Resized and toggled window visibility while interacting with the SOLIDWORKS part, then selected Plane1 in the FeatureManager tree.
Prepare the selected reference plane for sketch editing.
15:22
Opened Sketch4 for editing on Plane1 and adjusted the view with several scroll actions.
Inspect the sketch plane and existing geometry.
15:27
Opened the view-orientation control and changed the displayed view while keeping Sketch4 active.
Adjust the viewing orientation for sketch work.
15:37
Activated the Line tool and zoomed or repositioned the sketch view with repeated scroll actions.
Begin adding or editing sketch line geometry.
15:46
Canceled the active line operation, selected sketch geometry, then zoomed in and entered line-edit mode on the rounded inner profile.
Inspect or modify the selected sketch geometry.
15:56
Adjusted the view, selected a vertical segment of the inner profile, and left that segment highlighted with its relation and parameter fields visible.
Inspect the segment's sketch constraints and parameters.
16:06
Selected geometry in Sketch4, pressed Escape, and activated the Arc tool; the sketch remained open with the rounded profile and surrounding reference geometry visible.
Prepare to create or edit an arc in the active sketch.
16:16
Placed and dragged an arc along the upper-right portion of the rounded sketch profile, leaving a blue arc preview and visible radius/length measurements.
Create an arc segment following the upper contour of the sketch.
16:26
Continued positioning the arc around the right side of the profile, adjusted its endpoint, and pressed Escape to stop the arc operation.
Refine the arc segment to match the profile contour.
16:36
Zoomed and panned into the upper-left sketch area, then selected an edge/line; the tangent-relation shortcut menu appeared beside the selected geometry.
Inspect and constrain the relationship between the sketch entities.

Create and iteratively refine a detailed SOLIDWORKS engine-cylinder-block part, adding revolved, extruded, cut, patterned, mirrored, filleted, and reference-geometry features through numerous constrained sketches. Save the finished model as “Engine-Cylinder-Block,” inspect it from multiple angles, and access appearance, document settings, and print/save workflows.