Wow! That was an interesting thread at IGS. I never knew so much went into home made
slides. My wife is a stained glasser, and she has a glass cutting table top saw. Lubricated by water. The blade dresses the edges while it cuts, so there really isn't any more work needed...unless you want shaped edges. But then she has a glass grinder for that. She bought this saw used for $100. I made my first bottleneckslide on it in about 30 seconds or so. Now I have slides all over the place.
