Homemade Fluid for Glass Engraving?

[Jeremy Leasure]

Sister brought her engraver down to play with, but ran out of the blue fluid used when cutting glass. Is there a homemade something or other that would work fine? Thought about a few drops of Ivory dish soap in water. Hers is water based, runs through a pump and a small reservoir in the bottom of the engraver. Recycled over and over.

Can't think of anywhere around her that would have it, hence the question.

[Mark Sipes]

Is this for laser or rotary engraving???? For Laser coating the glass with a clear soap film is fine. for rotary I use windex in a spray bottle. I got tired of putting the bag under the spindle. so a bath towel worked fine with a mist. windex works great as a coolant.

[Jeremy Leasure]

Signature 8080 so rotary, thanks :)