Notes /highlights from getting started with onshape talk by [[User:Matt]] as a part of [[K-Scale_Lecture_Circuit]][[File:Onshape notes.png|400px|thumb]]====== Starting with 2D Sketches ======Begin CAD designs with 2D sketches on planes, then extrude to create 3D shapes. ====== Dimensioning ======Proper dimensioning ensures accuracy, transforming sketches from blue (undefined) to black (fully defined). ====== Extrude Tool ======Converts 2D sketches into 3D objects. Options like "new," "add," and "remove" are key for modifying shapes. ====== Rollback Bar ======Allows reverting to previous steps in the design, useful for troubleshooting and understanding the sequence of operations. ====== Using Constraints ======Applying constraints like coincident, perpendicular, and parallel defines precise relationships, making the design robust and easier to modify.

===== Starting with 2D Sketches= Extruding Specific Shapes ======Begin CAD designs with 2D sketches on planesSelect specific parts of a sketch to extrude, then extrude to create 3D shapesallowing for complex and controlled modeling.

===== Dimensioning =Symmetric Extrusion ======Extrude a feature equally in both directions from a central plane for balanced and symmetrical parts.

Proper dimensioning ensures accuracy, transforming sketches from blue (undefined) to black (fully defined)====== Multiple Parts Management ======Avoid creating multiple disconnected parts within a single part studio.Use assemblies

===== Extrude Tool =Extruding Closed Shapes ======Only closed shapes can be extruded. Converting lines to construction lines helps define closed shapes without affecting the extrusion process.

Converts 2D sketches ====== Boolean Operations ======Combine multiple parts into 3D objects. Options like "newone using Boolean operations," "add," though designing parts separately is often advised for clarity and "remove" are key for modifying shapessimplicity.

===== Rollback Bar= Trim Tool ======Allows reverting to previous steps The Trim tool helps clean up sketches by removing unwanted lines and intersections, aiding in the design, useful for troubleshooting and understanding the sequence of operationscreating complex shapes.

===== Using Constraints =Sequential Feature Order ======The order of features (like planes, sketches, and extrusions) in the feature list is crucial. Moving a feature before its dependencies will cause errors.

Applying constraints like coincident, perpendicular====== Advanced Sketch Relationships ======Besides basic dimensions, you can define angles and parallel defines precise relationshipseven perform arithmetic operations within dimensioning.This includes converting units directly in the dimension input (e.g., making the design robust and easier adding inches to modifymillimeters).

===== Editing sketches and maintaining integrity = Fillet Tool ======Filleting edges not only improves aesthetics by rounding corners but also reduces stress concentrations, making parts stronger.Filleting can both add and remove material, depending on whether it’s applied to external or internal edges.

Changing ====== Creating Assemblies ======Assemblies allow you to bring multiple parts together and define their interactions.Parts can be fixed in space or mated using different types of mates (e.g., fasten, revolute).Fastened mates lock parts together in a sketch updates all dependent featuresspecific orientation, but deleting while revolute mates allow rotation around a sketch can cause errors, emphasizing careful management of dependenciesfixed axis.