[4DThinker]

I've pattern flush trimmed 1.5" thick hardwood for table legs in the past. That was using a bottom bearing 1.625" cutter spiral flush trim bit in a router table. Before flush trimming I band sawed the legs within 1/16" or so of the final surface.

 

[4DThinker]

The straight bit I have has a 1 inch blade surface and can't do this.
GM1917

When that happens to me I invest in a longer bit. Consider it an investment for current and future projects. With simple straight bits I used a template bushing plate insert and make templates that are smaller than the finish part by the difference between the router bit and the bushing diameters. Long straight bits are usually less expensive than long pattern bits. Always with a 1/2" shank.

This is my routable top: Veritas Tools - Router Tables and Accessories - Router Table Top
Unfortunately no longer available.
4D