The old one needed to go - as you can see. It was part of an old office desk.
With no pin/ no safety for rails/featherboards/fencing etc it was used rarely due to the shear terror of it.
I followed this design which seemed reasonably doable for my skill level.
Most of the instructions and assembly were good-a few things missing here and there but i got through. I chose a Jessem Rout-R-Lift II for the insert.
Took me awhile -but close now, just need to make the fence and install a kill switch.
Most of the mistakes are luckily on the inside.