
Master 2D sketching, sketch constraints and parametric part modeling in Onshape.
In this essential course we will be modeling 13 (thirteen) 3D parts
to strengthen and reinforce your skills and understanding of sketch constraints and feature creation.
Sign in to Onshape, set units to millimeters, and create a private document. Sketch a circle on the plane, drop the center, then add a line and a construction line.
Sketch five circles on the front plane to form an anchor plate: a 6 in center and four 20 in outer circles, with the outer circles constrained to be equal.
Align four circles in Onshape using horizontal and vertical constraints, midpoints, construction lines, and equal diameter constraints to create a fully constrained sketch.
Master constraining and extruding regions in Onshape by creating a profile with circles and arcs, applying tangent and horizontal constraints, trimming, dimensioning to 60, and extruding to 15 thickness.
Sketch construction lines on the front plane in Onshape, set dimensions at the origin, and place two circles with diameters 20 and 15, then apply an equal constraint.
Sketch arcs and lines with the line tool, placing points and creating a three-point arc. Apply concentric and tangent constraints between the circle, arcs, and lines to ensure smooth transitions.
Fully constrain a sketch for extrusion in Onshape by applying parallel and equal constraints and dimensions. Extrude the sketch region with a symmetric end type to a 15 unit thickness.
Master completing a rod holder in Onshape by constraining tangents, trimming, and mirroring a sketch region, then extruding it symmetrically to a 1 inch depth.
Learn how to create the initial sketch for a guide block in Onshape, set units to millimeters, draw a profile with lines, and apply horizontal, vertical, and colinear constraints.
Apply symmetry to sketch regions using the symmetry constraint on vertical lines and a symmetry line. Prepare to fully constrain the sketch regions in the next lesson.
Constrain the sketch region in Onshape by applying dimensions to vertical and horizontal lines, establishing the origin with horizontal and coincident constraints, and preparing to turn the sketch into 3D.
Extrude a sketch region into a three dimensional solid with a fifty millimeter symmetric extrusion, align the center to the origin, remove unused sketches, and review in isometric view.
Create a parametric rectangular base in Onshape by defining A and B as 6 and 4.5 inches, sketching on the top plane, and extruding to 0.5 inches.
Detail the base in Onshape by sketching slots and holes, constraining points and edges, applying dimensions, extruding features, and mirroring to create a symmetric base.
Learn to extrude a block in Onshape by sketching with precise dimensions and perpendicular constraints, then finalize the extrusion in an isometric view.
Learn parametric part modeling in Onshape by sketching a rectangle on the top plane and extruding and cutting to form a chain hoist base with symmetry and dimensions.
Learn to sketch arcs in Onshape by creating circles, applying equal constraints, and dimensioning arcs to 180 and 60, then extrude and prepare for a sweep.
Create a private block stopper document in Onshape, set units to inches, and sketch the base region on the front plane with 4 in and 0.25 in, then isometric view.
All 3D Parametric modeling packages requires a great deal of 2D sketching and sketch constraints in part creation.
Some of the key takeaways in this Onshape essentials course are:
• You will gain understanding of 2D sketching
• Mastery of sketch constraints
• Follow along with highly detailed light to moderate instruction.
• Course Exercise Files included in the lecture to assist you in part creation process.
• Level up to assembly and free-form modeling with high confidence that you have mastered the very fundamentals of part creation.
Why master 2D sketching?
In the context of CAD, all 3D parametric objects usually starts out as 2D sketches.
When creating technical drawings your 2D sketches ends up very similar to your final drawings.
2D sketches holds the very foundation of your 3D model and 2D drawings.
Why master sketch constraints?
Constraints are the tools that binds and reinforces your sketched geometry.
In a typical machine, constraints are like the nuts and bolts the holds the assembly together.
Without constraints all of our sketched geometries are loose and unstable.
By the end of this course, you will have a solid foundation on 2D sketching, mastery of sketch contraints and parametric part creation in Onshape.