Marking Tubing Reference Lines
Timm Bogenhagen from the EAA staff demonstrates an easy way to mark a reference line on long pieces of tubing.
Welding Helmets Overview
Not all welding helmets are the same. Charlie Becker from the EAA staff reviews the basic and some special features of helmets and discusses how more than one helmet is useful when welding aircraft structures.
Modified Seine Knot - Alternate Method
Jasen Golden from Rainbow Aviation Services demonstrates an alternate sequence to tie the modified seine knot for rib stitching fabric covered aircraft.
Joining tubes together requires shaping the tube end to get a good tight fit. Charlie Becker demonstrates a technique he learned from Paul Poberezny to fishmouth tubing for good tight fits.