What is dimensional tolerance? This creates a tolerance band you’ll be striving to fit into and if additional processing is needed. But **think** tolerance band and trying to put upper and lower edges inside it.

As long as you are concerned with the minimum dimension - which would be the kerfed out edge at the bottom. Outside cut dimensions would be correct at bottom but not top, inside dimension, say hole would be smaller in diameter by .030"- .040".

Walls would still be sloped. However, when cleaning up the walls to be perpendicular , a second process step, it would be dimensionally as designed.

What is you tolerance ±? Skew it towards the dimension you want: say tolerance is .010" for and outside dimension. Nominal dimension is 10.000". So tolerance band would be 9.990" to 10.010" for acceptable part.

Do offset of add .008" for outside cut. Finished upper section will be 10.016" or .006" oversized, bottom 9.986" or .004" undersized. Can you live with that?

If tolerance is equal to or larger than kerf, then you can make the offset from top to bottom fall inside tolerance band. (assumes laser cuts at nominal dimensional - will have to add or subtract laser variation).

Fit up of edges will determine acceptability without further processing of edges or if some is needed - then skew adjustment as needed.