When selecting a jigsaw to mount on the underside of my table saw extension, I avoided any with fail-safe switch protections. This older models simply turn on and off, and if the mains power fails and you forget to reset the machine, they’ll carry on where they were left off. This model will remain attached to the Perspex plate, so there is little chance of me forgetting to reset the switch will result in an accident. The Perspex is roughly 10mm thick and I am using dichloromethane plastic weld to hold everything in place.
Simple Tilting Router Table Insert / Table Saw Extension – https://www.youtube.com/watch?v=vqZN9DwCO90