Since Mush has kindly explained to me that one can felt wool stuff in the sink, I now have another question:
Do wool items felt at the same ratio?
For example ... the pattern I am making (felted military belts) says to knit 62" and the final felted product should measure 48".
So ... (and here is where Vuboq shows why -in some circles*- he is considered to be a MATHEMATICAL GENIUS), I have knitted a belt which measures, pre-felting, 54".
Thus, the final felted product would be ...
X/54 = 48/62
62X = 2592
X = 41.8"
Is that right?
Let's look at another example ... I have an incomplete belt which is currently measuring 33". I am out of yarn, so if I bind it off and felt it, I would need to find a friend with what inch waste?
X/33 = 48/62
62X = 1584
X = 25.5"
25.5" - 3" (for attaching the belt buckles) = 22.5"
Hm ... do I even know anyone that thin?
*some circles meaning groups of children, ages 3 or younger