Thanks lemony,
Yes it is a BB 10,000. I love it. I thought the same thing about the length of the 6'' neck. I was wrong. I can get an 18'' fluffy foam column with no problem of pushing it out the top.
Me and a buddy made the cone. We used a DIY oven , with a propane heater and some air vents. Built a jig to hold a piece of 3/8'' acrylic and pushed the center of it once it was soft. The tricky part was getting the correct diam. to match the tube it was going to be welded to. That process involved a different jig. Out of every 5 we would push we could only use 3. on average.
I used a Bondo spreader and cut it to the inside diam of the neck for a neck cleaner. Works great.
Yours looks great. How tall is it overall?
Try to keep the BB pump out of the light. I am starting to get algae growing in the clear pump cover. I think I am going to put a coat of black fusion paint on it,