Some years back (around 2006/07 there was a party on Fred's stie who made a tool where one end allowed one to stick 4 pieces of solder in one end to vive one an easier wayt to form the headers, on the other end, was fout pieces of slid rod the same size as the solder that alowed youj to creat the header collector slightly larger than the for the exhaustt to git into, the lightly crmip them down tightly on the "pipes"
Where it is right now, I can't say (only because I went looking for it!)