27/12/10

Business Name

Through Hulls

It was very cold when I welded the through hull in so I put this electric bar fire heater inside the sub for about an hour to get the chill out of everything.  Then I preheated the joint with the blowtorch, welded it and then covered it all up with my welding gloves and blankets.  Finally I put the fire on inside again for another hour to let it cool down slowly.  This method kept everything warm for ages.  In the picture, its just sitting there heating up.

Submersible Build Log