Wooden Lungs
Member
- Joined
- Apr 9, 2011
- Messages
- 178
scgwhite said:Great work Lungs. Do you mind me asking - did you cut the large curved arches from a wider straight baem, or did you find curved stock? I'm building an oak orangery which calls for some large (1800mm long) braces to support a purlin - I cut all other small braces from straight stock but would like the advice of an expert about the large braces.
Wuffles said:scgwhite said:Great work Lungs. Do you mind me asking - did you cut the large curved arches from a wider straight baem, or did you find curved stock? I'm building an oak orangery which calls for some large (1800mm long) braces to support a purlin - I cut all other small braces from straight stock but would like the advice of an expert about the large braces.
I believe he did cut it from a larger beam, was mentioned in another thread about the arch. Let me try and find it.
Here you go: http://festoolownersgroup.com/member-projects/arched-braced-truss/
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I am dictated by what the sawmill give me to an extent. The archs were cut from long rectangular blanks. I tried to orientate the grain to suit the archs but this is not always perfect, there were some large knots which you should always try and enclose in surrounding good grain. Knots on the arris are a bad idea but cannot always be avoided. You have to work with what you've got!! Ideally these sections would be cut from "compass timbers". These would be carefully selected trees that generally grow on the slope of a hill and have natural curves. But obviously the facility to do this is limited. We try to use second rate Oak for heavy structural work as it is considered bad practice to use top grade for framing. All the good stuff is put in our kiln and used in the Joinery.