Yep, even the smallest trim saw will cut 1" diameter.

Koz wrote:

After reading all this over and all the methods that "might" work
I'd say take it to your local rock shop or any rockhound. The
diamond saw could whip out a dozen of these in short order without
all the headaches.

Koz

Stan Schaefer wrote:

(Ken Sterling) wrote in message
ws.com...


Gang,
Got a piece of glass tubing (similar to Pyrex) which is .490 ID,
.625OD and I need to cut a piece about 11/16 long. File won't
touch
it, glass cutter won't do it, have been trying to score the
outside
with a thin "cutoff wheel", which scores it, but the stuff won't
"snap
off" as expected... just shatters, even past the score mark. Am
I
going to have to cut completely through with the cutoff wheel to
do
this?
Ken.


Is that 11/16" or 1 1/16"? Any Pyrex I've ever encountered would
scratch with a file and break cleanly, but I've not cut anything
quite
like what you describe for dimensions, that's almost gauge glass
thickness. I'd say it was time for a diamond wheel and a lot of
water
for cooling. I've also seen a jig for cutting thick-wall glass
tubing
for lasers using a hand hacksaw and a chunk of banding iron for a
blade. Abrasive compound was used for the actual cutting media.
Messy, any way you cut it.

Just thought of another way I'd seen for cutting big carboys and
bottles. You use a diamond and scribe all the way around your cut
area, wrap with nichrome and heat the area up with a Variac for
current control. Then take a wet rag to the scribed line and it
should crack through. Worth trying.

Stan