Laser cuts 3-5 degree angle through wood and Acrylic

[HalfNormal (HN)]

Lasers have an hourglass beam at the cutting area aka kerf.

What is the best kind of focusing lens

I found some info on focus here [The Basics Of Focus] and more here https://www.everythinglasers.com/forums/topic/laser-lenses-optics-and-focus/#laserbeams