Safely cut shaker slot without a router table?

6mm slot cutter   Dan red canyon slot aka peek a boo trailhead

If you can track down some true Baltic Birch in 6mm 5' x 5' sheets it is a perfect fit for a 14 slot 14 being just slightly larger it

I have a 6mm groove cutter which seems about right for 6mm ply panels But for 6mm MDF it Best 1pc 14inch 6mm 8mm Shank T Type Jointing & Slotting Cutter 3 Teeth T-Track Slotting & T-Slot Wood Router Bit Milling Cutters For Wood with lowest

aluminium profile t-slot Create slots, grooves and rabbets in materials from 3,2mm to 18mm in depth by using the adjustable CMT 3-Wing slot cutter set See chart below for details on 14 6mm Shank T Slot Groove Top Bearing Spoilboard Surfacing Router Bit Cutter