Three comments.
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The best way to avoid filleting problems is using Rhino 7 and making all fillets at the same time (using FilletEdge command).
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This free Rhino plugin (TutorialPanelPlugin) will improve qualty of your tutorials: New feature request - tutorial pane
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There are two kinds of Rhino users: those who push osnap control under the panel and those who do not. I do, and I use dark colors as well.