That's about as close to a serious injury as I'd want to get. Its amazing how fast it happens. Its hard to focus when its cold but maybe you can figure out how to keep going with sub-assemblies that can be worked on inside.
Greetings and Happy New Year to a fellow restorationist. Its a long road but lots of fun. JohnH makes a good point regarding the safety of the furnace. Most RV furnaces don't get much wear and tear so even older ones tend to be in good shape. How...