[labdude]

When I mention overlap, I don't mean on top of. More like stacked, so there is no increase in acrylic thickness. Like this=, not like this+. Clear??? as mud?
Nice theory on fracture strength. A patient who is rough on an appliance, is rough on an appliance.
I have so little breakage and repair work, it is about 0.00001 percent. Probably less. Wires and acrylic.
Wire does re-enforce the acrylic. Maybe makes it stiffer, still it bends also with the acrylic. Seems a fracture at least stays together if it has wire in it. A lot of breakage happening requires a look at acrylic thickness, undercut block outs. Also a good look at what type (maker) of acrylic you use, or combination of liquid and powder.
My lack of breakage comes form a lot of time spent on various acrylic monomer and polymer combinations. Also the way it handles when layed on the model, how fast it cures etc.
I use Hygenic repair resin liquid in all polymers. I use only JBC colors. They grind in the colors. And for clear I use GL Super fine polymer.