Good morning Cole. 
I dont know if there is one right answer, depending on the quality of wood, 
(open grain vs closed, knots,and how it was cut, And Dont forget, if the wood 
is green or dried....) could make a difference. But having said that I normally 
leave 1/4" -1/2" for waist . (but that is just a general rule of thumb, for 
me.) If you want to be real frugal You could go much less, I mean if I use your 
example 3 1/2" square cut billet,You could make that square into a 3 1/2"round 
spindle in a prefect world, but I find that there will almost always be some 
error and you will find a small flat spot is you dont leave the room for the 
waist, (now if you can live with a small error, that fine, but if you cant? 
...) 
I guess it depends on what you are looking to do and who is doing the work. 
I while back I was talking to Tim. (he was a machinist. and I am a 
pipe-fitter), we were talking about tolerances, He is use to working with in 
.001 ( or smaller.) and I told him a good pipefitter should work with in + or - 
1/4". Now how do you find the common ground the tolerances are hugely 
different? For me Close is good, and for him Exact is a must. 
I hope this helps? ;-) 

I have to get to work now. 
I hope you have a good day. 
C.A.G. 
----- Original Message -----

From: "cole" <coleandrew...@gmail.com> 
To: legacy-ornamental-mills@googlegroups.com 
Sent: Friday, April 17, 2015 2:26:21 PM 
Subject: Waste 

When glueing up billets what is good rule of thumb to figure on waste? For 
example I want a round column of 3 in. Is 3 1/2 in square enough usually by the 
the time I turn it round? 

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