Can I engrave borosilicate glassware without compromising its structural integrity? Can I use a pen engraver (the kind that's like a tattoo gun with a diamond tip) to engrave my initials on labware without compromising it? I am in a lab space with a shared acid wash, and my glassware keeps getting boosted. I'm worried about e.g. heating a beaker and having it shatter because of the propagation of microfractures potentially caused by the engraver.
Any scratch weakens glass somewhat. However, a vibratory engraver is very likely to shatter the vessel.
You can label glass permanently by etching with warm concentrated $\ce{NaOH}$ or room-tempeerature $\ce{HF}$, perhaps with a stencil. Use great caution with $\ce{NaOH}$, and even more caution with $\ce{HF}$. Both are very caustic, and $\ce{HF}$ can release toxic fumes and cause deep tissue damage.
There are commercial etching creams with HF that might be less likely to splash.
Note that etching weakens glass slightly, but less so then engraving.