Nozzle growing a beard while engraving

[Stroonzo (Jeff)]

This is also a very effective means of preventing the “bearded lens”:

Using a 4” Lens in the 1” Position is Amazing

I finally did this experiment today. This is something I have contemplated for a while. The reasons driving me to want to try this were: increase the safe Z distance from the cone to the material reduce the potential for contamination entering the beam opening at the top engrave acrylic without air assist (because it engraves so much better without it). Doing this without air assist will cake the acrylic on the nose cone and often lends itself to lens damage. I bored out the tip of…