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I will fuse some fibers and label them. Two will be fused just once with the bend pointing up and back toward the windows, and two will be fused twice, first with the bend up and back and next with the bend in front and down.
I will fuse some fibers and label them. Two will be fused just once with the bend pointing up and back toward the windows, and two will be fused twice, first with the bend up and back and next with the bend in front and down.
5/25/18
Yesterday Jim said my fusing problems may be because I adjusted the set screws for the valves leading to the spaces above and below the piston in the fusing unit. I adjusted them because I thought the ferrules would have come together too hard without an adjustment.
Jim thought that the top ferrule was moving down too quickly because I had the pressure from the regulator set too high. Maybe if I had just lowered that, I would not have needed to adjust those set screws. However, the pressure is a little above 40 PSI now and the descent and ascent speeds depend on where the set screws are set.
I noticed that when the ferrules are supposed to be clamped together I can still easily raise the top one. Yesterday I thought I had figured it out. I thought the downward pressure increased after the horizontal pressure was applied. I thought that might be why the top ferrule descended slowly. Today I am not sure because the top ferrule still goes up fairly easily after the horizontal pressure begins. It increases as it is moved higher, but when you first push it up it moves easily. That makes sense because moving the ferrule up means you compress the air above the piston and increase the downward force. I am not sure that the pressure is really 40 PSI when the ferrules are together. I don't have to push up with 40 pounds to move the ferrule up.