Summary

Simple Bamboo Pen Jig with the pen clip to the side.
Simply rotate the pen clip and continuing as many lines of text etc that you want.

I personally find that engraving them vertically gives a darker engraving - this Jig can be used Horizontally or vertically.

Cut from 3mm Basswood - no need for a backing as the pens sit perfectly on the Honeycomb - I have absolutely no issues using this - I have left the length a little longer as I did have some longer pens in one batch (not had the longer ones since though)
The cut outs are 1cm wide and 14cm long - you can of course amend this should you need.
Have fun.

Use the recommended settings for basswood and you will be good to go.