The plastic coded wire rack in my kitchen sink has rusted through and left stains on the porcelain and told me in no uncertain terms that it was time for a replacement.
In my 21st Century it means asking someone the name of the object followed by a web search. In the end I found a rubber mat at a discount store for $2.99. ($3.25 if you add in the tax.)
Just before I put the mat in the sink I took a closer look. It's something I've done more and more for ideas for my Engineering Drawing course. This I imagine is similar to musicians looking for patterns and inspiration in sounds I'd never remember. For me everyday objects get a brief consideration as a homework or exam problem. (The latest midterm had a variant on COVID-19 icon.)
I realized that the lines of holes in the mat were not orthogonal (perpendicular to the sides), but at a slight angle. And then there were the ridges. Could I actually ask the students to do that in 3D, or more importantly, could I?
And with that I was off on a 21/4 hour jaunt through AutoCAD land. Here's the result:
This is the type of drawing which, in the past, I would say makes the world a safer place for democracy by keeping the students off the streets.