OK, thanks for the information, Julie. You could add a mini warp to each side, but, if it were me, I’d be a tad concerned about keeping my selvedges nicely tensioned, with that many threads been added at each side. Another approach could be to put the two mini warps on the inside of those borders, rather than the outside., keeping them in their cross as you thread them. You would still have to keep an eye on them and their tension, as you weave, but your selvedges are tied on and should be easily manageable as you weave. With placemats - your edges are part of the design and visible to anyone using them ;-) Maybe someone has some suggestions.