I would use wire nuts that have a brass insert with a set screw that you
tighten onto the wires, after trimming the excess hanging out the insert you
screw on a plastic cap. When finished it looks just like a twist-on wire
nut. A "Marr #2 insulated wire connector" is listed as good for two solid or
stranded #10 wires down to five #14s.

"toller" wrote in message
...
I have to make some connections inside an electrical box between #10 solid
and stranded #12.
I tried wirenuts, but it doesn't seem particularly secure.
I have only used crimp connectors on standed; can they be used on solid?
If not, then what? Thanks.