Joe,
That's great! While not as severe as a stroke, I lost half of the tip of my left hand ring finger in a wood planer about 13 years ago, and thought for awhile I was going to have to learn how to play left handed. So, in a limited way, I know what a relief your must feel to be able to play again, even at some diminished level. My vibrato has never recovered and my speed is more limited, but I find ways around it. Still feels like getting stung by a bee every time I fret using that finger, but that's life.
I'll find out what kind of ink the shop uses. I know the black is costing me $3.57 per pound and I had to buy a 55lb box of it. There is a great silver color I wanted to use until I found out it costs $6 per pound. The good news is I can do a lot more than just my initial run of 100 enclosures with that 55lbs of paint, so it works out to be cheap per enclosure. But I hate up front costs.
My Mouser bill is through the roof.