I expolored this very option for my 1642 - from buying the $600 outboard stand that Jet offers, to making one. I finally settled on adapting a Vicmarc outboard tool rest to the Jet - which proved to be the simplest, most affordable and stable solution. You'll find a thread on this forum in regards to that project, complete with pictures and the specs needed to make the adaptation.
The Vicmarc rig costs $285 plus shipping (Craft Supplies stocks it) and, when mounted to the Jet, is rock solid. The advantage is only one leg goes to the floor - so you don't have to worry about leveling a tripod or having to work around three legs which protrude out. to adapt the Vicmarc, you only have to drill and tap four holes into the Jet's legs to hold the mounting bracket. Been using it for six months without a flaw. Took all of two hours to set up. Also, I supplied Craft Supplies with the pictures and specs, in case they had an inquiry of how to adapt it to the Jet. Good luck!