Double and Treble Knit

You begin a double or treble knit in the same manner as the single knit.  After a few time around your dowel with a single knit, count back 2 rows and slide your wire back through a stitch made 2 rows ago.  Continue to do this, and you've got a double knit chain.  Double knitting is probably the style you'll want to make most often, as the single style appears too open for Viking chains.    If you count back 3 rows and slide your wire back through a stitch made 3 rows ago and continue in this way, you've got a treble knit chain.

Evening Out Crooked Stitch Distribution

Guaranteed, you'll end up with a stitch that is too close to the one above it.  You can even out the space by making a very loose stitch and then tightening those on either side of it a bit more than you usually would.  You can also take your needle and gently "pry" the stitch downward a bit.  Again don't worry too much about it, your adjustments will hardly show after the chain is drawn through the drawplate.

Joining a New Wire

Eventually, you'll run out of wire.  When you do, clip the wire where it comes out from behind two "sides" and use the needle or needle-nose pliers to push the stubby part under another stitch as if it were a regular stitch. Cut a new piece of wire about 16" long and make a small hook on one end.  Weave the other end back thorough the stitch you just finished, as if you making the same stitch a second time.  Make sure your hook catches underneath the stitch you're redoing (to hide it.) Follow the first wire but bring it out under the end of it.  Take the wire over the cut off end as you travel to the next pair of "sides" to stitch together.

Finishing Your Chain

When your chain is as long as you want it (it will gain 20% of its length by being drawn), leave about 6" of knitting wire hanging from it.  You may need to use it if you're chain ends up being too short.  Irene From Paterson says, "you can force a small mandrel into the chain again, then a larger one until you have the right size to continue to knit, but this is extremely difficult and a huge bother, sot it's better to knit too long than too short."

Check over your chain to be sure all cut ends and beginning hooks are well buried.  If anything is loose, you the needle to push it into place.

If you're knitting is uneven, you may want to slip as big a knitting needle as possible through it and roll it back and forth on a tabletop between two pieces of leather.