Instructional video tutorial. Simple glass blowing technique of closing the end of borosilicate glass tubing and thickening the glass before blowing a nice spherical enlarged bubble.
Used in this clip is 8mm x 1.5mm Borosilicate Pyrex Tubing worked on a low cost high velocity torch head attached to a TradeFlame Map Replacement disposable gas bottle available from most hardware or industrial supply outlet.
Post time: Oct-10-2017