Monday, July 30, 2012

Set Up:
-         2 mm Pyrex rod
-         8 mm Pyrex tubing
-         # 1 tip
-         Matches/mats/towel/glass cutter/screen
-         Blow tube/cork

T- Seal (8 mm tubing):
-         Cut 2 pieces of 8 mm tubing (8" and 6" piece).
-         Use a # 1 tip.
-         Cork one end, of each piece of tubing.
-         Heat the middle of the 8" piece of tubing and blow a small bulge.
-         Heat the tip of the small bulge and blow out the bulge (see last Monday's lesson).
-         Flint knap the rough pieces, leaving a small part of the small bulge.
-         Heat the end of the small, 8 mm tubing and the hole in the other tubing, remove from heat, push them together then slightly pull them apart.
-         Heat one side and allow to collapse
-         Remove from heat and blow to diameter of surrounding tubing.
-         Slowly, repeat for the other three sides.

Patching holes (2 mm rod):
-         Use a #1 tip.
-         Heat the area with the hole and the 2 mm rod.
-         Touch the rod to the hole, remove from the flame, and pull off the rod.
-         Heat the area with the hole, remove from the flame, and blow the tubing to the surrounding diameter.
-         Remove any excess glass with a cold piece of glass.
-         Continue heating and blowing until the tubing is uniform.

           If you had taken my "Scientific Glass Blowing Class", up until now, everyone has a "F".  Once you've completed, todays lesson sucessfuly, you now have a "D".

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