Wire forms

I'm trying to model a formed wire using sweeps following 3D sketches and am having endless problems with the sketch becoming over-constrained.
Could someone who models this sort of thing regularly (and reliably!) please give any tips on how they do it, and/or email me a model with a good example.
TIA, John H
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here. All logos and trade names are the property of their respective owners.