Treadwell Plans are in Downloads Section

[Lichtbringer]

There's no use talking about 3mm styrene when it's actually .125 in (an eighth) because the error propagates and 'causes problems later.

The crux is .... no matter if those errors propagates, as only 3mm is available and no 3,175 (i assume it´s that way in most metric using countries, too), there is no way to get the second - which makes it hard to use them.