Another option for you…
I mounted my X carve onto a table and mounted some T Slot between its rails. I then filled the gaps between the T Slot with bits of MDF. You may g et the idea from the image below. I did put some threaded inserts along the middle of the MDF, but I rearely use them.
When needed, replacing them is very simple and they just need to be ripped to fit between the the TSlot rails. I screw them down using a Tek-screw driver and screw the heads so they’re below the surface. A quick skim across the top with a wide bit in the XCarve to flatten them and you’re good to go.