The First Way

A simple way to cut, or rather break off a piece of glass tube evenly is to make a cut all round the tube with a three-cornered file92 and you can break it off at the line without trouble.

Fig. 85. A Cutter For Glass Tubes

The Second Way

An easy and sure way to cut glass tubing off smooth is to use a gauge glass cutter; 93 this is a V steel rod with a seat on one end and a steel cutting wheel on the other. The arm of the rod holding the wheel is marked off in fractions of an inch like a rule and a stop with a set screw in it slides on this rod as shown in Fig. 85.

92 The right name of a three cornered file is a three square file.

98 You can buy one of these tools of Hammacher, Schlemmer and Co., Fourth Ave. and 13th St., New York.

To use the cutter set the stop on the rod at the length you want to cut the tube; then put the rod with the cutter on it in the tube and with the seat outside; press the V rods together tight and turn it and the tube in opposite directions when it will make a good cut and you can break the tube in two easily.