Treadwell Plans are in Downloads Section

[kresty]

I build robots. I use metric all the friggin' time. Stepper motors and bearings are all in metric, these days. I tend to switch back and forth based on the units the raw materials will be in. There's no use talking about 3mm styrene when it's actually .125 in (an eighth) because the error propagates and 'causes problems later.  As I have complained many times, it's just difficult to get metric stuff here in the states. Took me two years to finally find some hardware suppliers that'll sell me metric bolts at a reasonable price. The metric stuff at the hardware store next door is literally 25 times more expensive than the ASE equivalent

I hate that the metric selection at the hardware store is so poor, same chain I think.  At least they have some

Oh, and I hate that the units we do use are getting skinnier.  1/2 plywood isn't 1/2 inch any more, and a gallon of paint isn't a gallon.  What's with that?