“Wax to make removable pins during glue up” ?????? Your question doesn’t quite make sense to me? If you want a wax to resist epoxy during glue up. The paste wax or whatever the thickest one you have will do what you want instead of floor wax. For the most part, waxes are waxes.
I call them temporary pins ..... after scale are glued/finished shape/ and epoxy set I remove them . Then i cut new pins on right length ...........and peened them
Three reasons. It is much easier to shape the handle (without overheating) without the metal pins in place, especially if using mosaic pins. Also, if you want to peen, you can not do that if you have ground down an already inserted pin while shaping the handle, so that there is no pin protruding, or the hole has not been reamed to accommodate the expanding peened pin.
Because I don t know what I m talking about , sometimes
Anyway , I use two set of pins ...one set to finish scale/handle without glue , which mean that pins are grinded and flush with scale .So when i glue handle i use real size pin so i can peen them . But sometimes i glue scale and finish them with pins on and then get out pins and insert new one so i can peen them ......so first post make sense 
I have used dowels also, especially for corbys. It’s just easier to get the right size with pins. I have several pins of each size I use that I use over and over...
