I do engraving with a home built machine.
This lets me make lines of about .018 width on flat surfaces. Text of .14 height has good legibility, if the font is simple. I use the design software “Cut2D” by Vectric.
Here is the design for the back of a typical 5 weight reel.
The “S/N 67” is the reel serial number and is there mostly for my benefit (future identification). I can hide this on the inside of the reel if you would prefer.
The mayfly is a typical line sketch from my repertory.
On a reel with a blank (unengraved) back, the area here occupied by “North Branch Reels” would instead have additional porting holes.
To create the engraving toolpath, I traced lines from a JPG file:
If you have some picture that you to have engraved, I will be glad to quote for the design time. I am not set up for 3D, only simple 2D line work.