Usually a back of the napkin grade sketch with a couple of key dimensions added in. I'm new at this. Drawing the sketch sometimes points out things I hadn't realized before. I have gone beyond the point where I wished I had made a sketch before starting...
I use Draftsight for 2D drawings I use as well for customers I do design work for. Want to go forward to the 3D world, but have no time to learn it. Been playing with a couple of the free programs out there. I don't care for cloud based programs, but do like the looks of Autodesk Fusion 360.
I use SolidWorks for CAD, SprutCAM or HSM Works for CAM. I am also working at developing skills in Fusion 360 for an integrated CAD/CAM package.
I find it simpler to do my sketching in SolidWorks rather than with paper and pencil. There's no need for an eraser as I work through the design process.
I use to use many of the products mentioned above. I moved to Fusion 360 a few months back and dont look back. I can 2d draw, 3d draw, print out the drawing plan, and create CAM for my cnc.... Really good software and for the home it is free.....
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