I have another thought on this idea. I have a piece of acrylic from my landlord using it as a make shift storm window. I replaced it with an actual glass window now, and the acrylic is now mine, so I am going to cut it myself to make that 9 degree template I need. I want to mark it as the purchased one is, and I got to thinking how to do that. Well, I have an electric engraver and using a ruler and a fine point sharpie that should be just right to make those markings. Again, using the steel ruler to guide me with the markings I need and the engraver to make the markings deep enough. then go back over with the sharpie and leave the markings embedded so they can be seen better. What do you think? Hope I stated this right to follow? One can even use different colored fine point sharpies if needed.