[AuburnDave]

I've notice that there are several different materials used for router lift insert rings. Some manufactures use some sort of plastic, others are aluminum or other some other metal. I know most twist lock, though a few manufactures have either magnetic versions or a snap in/out toolless version (rockler.) Seems like most have gotten away from having to physically screw them on/off.
Does anyone have any insight into what works best or the pros and cons of each.

 

[AuburnDave]

Ever since a pc type template guide came loose and hit the bit at 15000 rpms I stay away from metal when I have a choice.

That's been my fear of the metal ones, especially the magnetic versions (incra)
I guess I'm just trying to make sure there's not a major flaw with the plastic ones and I'm missing it. I absolutely refuse to deal with the screw down versions.