One of the recommended procedures to wax Pearsalls thread was to use white wax, store bought paraffin to be exact. I had some in the block form as purchased from the store.

I got this bright idea. (guess it's still the little boy in me). I took a 5ml syringe and cut the needle end off. I melted enough wax to fill the syringe. It worked beautiful. the wax, once melted, remains softer than when purchased. With the plunger still in the syringe, it allowed me a push tube. It keeps the wax clean and can just push it up as needed.

It did a beautiful job on the thread and left no build up.

Just thought I would pass along for you do-it yourselfers.