Those are amazing Hans, thank you. Looking at them I am not surprised, they show the same skill and thought that went into his tools. My Frank Matarelli bobbin holder is the only non ceramic one I use. All he did differently, in respect of the tube, was choose an appropriate material. Simple but no one else has done it.
"Political correctness is a doctrine, fostered by a delusional, illogical
minority, and rabidly promoted by an unscrupulous mainstream media, which
holds forth the proposition that it is entirely possible to pick up a ****
by the clean end"