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Notes from onshape talk by [[User:Matt]] as a part of [[K-Scale_Lecture_Circuit]]
====== 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.
====== Editing sketches Sketches and maintaining integrity Maintaining Integrity ======
Changing a sketch updates all dependent features, but deleting a sketch can cause errors, emphasizing careful management of dependencies.
====== Extruding Specific Shapes ======
Select specific parts of a sketch to extrude, allowing for complex and controlled modeling.
====== Symmetric Extrusion ======Extrude a feature equally in both directions from a central plane for balanced and symmetrical parts.
===== Multiple Parts Management =Extruding Closed Shapes ======Only closed shapes can be extruded. Converting lines to construction lines helps define closed shapes without affecting the extrusion process.
===== Extruding Closed Shapes =Trim Tool ======The Trim tool helps clean up sketches by removing unwanted lines and intersections, aiding in creating complex shapes.
===== Boolean Operations= Advanced Sketch Relationships ======Combine multiple parts into one using Boolean Besides basic dimensions, you can define angles and even perform arithmetic operationswithin dimensioning.This includes converting units directly in the dimension input (e.g., though designing parts separately is often advised for clarity and simplicityadding inches to millimeters).
===== Trim = 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.