I bought a biscuit joiner years ago, I almost never use it unless working with sheet goods. I bought a 4mm cutter for the shaper which I find is often better for edge applications if I want to use biscuits.

I don't edge glue with biscuits when making panels, I normally just use my finger tips to check for alignment. If I'm really worried about alignment I'll run the boards through the shaper with a glue joint cutter.

Due to the type of work I do, my biscuit joiner spends most of the time on the shelf..............Regards, Rod.