Chuck up a 3/4" 14 degree dovetail bit and mount the spacer fence. If you are using the Oak Park router table and spacer fence the mounting holes are predrilled on both. You will use mounting holes 2 and 4 on both the spacer fence and table. Set the depth of cut at 1/4". Use the set-up block to check the bit height and spacing as shown.
Mark an X on the edges of your material that will be against the 3/8" rail on the spacer fence.
If you experience chipping or breakout, sandwich your material between two pieces of scrap wood and clamp together.
Cut the dovetails across the end of your material. Use a backer block to keep the material verticle as you cut.
The space between the dovetails MUST be 1/2" to fit the 1/2" dovetail slots cut in the liner material.
When cutting the second piece, clamp the off-set block over the rail on the spacer fence. Make sure the DOVETAIL side of the block is towards the cutter. Make the first cut.
Remove the off-set block and continue cutting the dovetails to the end of the material.