[kkalin78]

I use biscuits when I need glue up a big board like table top. Not sure about additional streights but they absolutely help in alligment and putting clamps correctly. As result it requires much less time for me and less chance the glue will dry during assembly. Also the board itself will require less sanding after. It was really important when I didn't have thickness planner. To make biscuit I use router and router bit. Looked at the tool some time ago but it looks a bit over expensive for seldom use.