In the case of my test float the balsa provides the buoyancy, and as you say a possible overall shot load of say 8BB or 2 SSG. If changes are made to the materials used in the float then the shot load will change even if the overall volume and shape remains exactly the same. Substitute the nail with a piece of cane and you might have to add another couple of BB.
Sorry, I don't understand, are you now supporting what I was saying? Aren't you, or are you, or what are you saying? Unless you're going to hark back to that LOB about being the same diameter again, or have we killed that one.
Cane, reed and peacock inserts add buoyancy to a float, wire and plastic don't whatever their diameters. Is that it or are you going to contradict taht which you just said again?
The steel nail is much denser than water (could look it up but we know it's several times denser) yet we can successfully shot the float to have an inch of steel above the water despite it being much denser than water.
You can't, it's impossible. As soon as you add sufficient shot to counter the buoyancy of the wood IN ITS ENTIRETY the whole thing sinks until the lowest shot touches bottom and then the remainder of shot and the float will suspend due to the buoyancy of the main body of the float.
(That's the idea of suspension floats used in pike fishing, but I hope I'm not getting out of your depth there.)
In your example with the nail, or let's say fine wire as in a pole float, there has to be a very tiny amount of the buoyancy part touching the surface or the last tiny shot on the deck. You cannot have all the buoyancy part of the float submerged by the shot and just have a bit of wire tip showing because wire won't float. It's one reason the tackle companies sell float grease to add buoyancy to the wire as grease floats, I think, I'm pretty sure it does, or can you prove me wrong on that one?
So, are we still on about diameters now or simple buoyancy?
---------- Post added at 21:16 ---------- Previous post was at 21:04 ----------
So Woody, if you now take your inverted loaded insert waggler and draw out the brass insert until it's the same diameter as the tip, you'll have a float with the same length of tip showing for a given shot load and the same sensitivity (responsiveness to a pull from below) whichever way up you fish it.
Did I have a loaded insert waggler with a brass insert?
Where did that come from? Still, I refer you in part to the answer given to the Honourable Member earlier.