Are Most extended shipovye connections of separate elements (details) in knots, in frameworks, and the most simple is the way are viscous on an unary direct through thorn (fig. 15).
the Marking and formation of thorns and eyes. Razmertka ugolnikom and a surface gauge:
1 - the tyre; 2 - eyes, zapilivanie; 3 - a thorn; 4 - eyes; 5 - a marking of two bruskov a square
The Thorn is interfaced to a nest (eye), the planes it densely adjoins to walls (cheeks) of an eye that is reached by an exact marking by means of a square and a surface gauge, and then exact prosaws. Complexity consists that it is necessary so to execute prosaws that on preparations there was a half not touched with a saw on a thickness of pencil lines (risok). Thus on a thorn razmetochnye risks will be appreciable from an outer side of edges, and in eyes - on cheeks. .
Observe certain sequence of operations at manufacturing of the elementary knot from two details: at first mark bruski under a thorn and an eye, then zapilivajut a thorn, check its conformity to a nest marking, form a saw and a chisel an eye. Then dry collect details, check their parallelism, density prileganija. In necessary cases adjust, clean a chisel.