Two questions:CarlosV wrote:Something to point out (pun intended) is that the fiber needles were doped with different formulations of wood hardening solutions - some of them toxic and therefore not practically useable today. Without the doping the fibers, in particular bamboo, will wear prematurely. A 1924 Gramophone magazine article mentions one of these formulas, which includes gum arabic, see below (copied from the Gramophone web site):
Place a dozen or So fibres in ordinary gum to soak for a few days, then put in small tin saucepan with half gum and half water, bring to gentle boil for a few minutes, take out and wipe clean each fibre, and lay in flat tin or porcelain plate, and leave to dry thoroughly for a day or so, slightly warm them in oven or in ti over gas, and they are ready for use.
As a test I have used a doped fibre needle on a friend's instrument, playing eleven sides of different records, some of which were heavy recordings, without deterioration of clear tone. I may mention that the dope being a " water mixture " is antithetic to the material of records, so any minute debris worn off into the grooves will not adhere, as would a elope of shellac spirit varnish (used by one eloper I came across).
1. When people talk about fiber needle construction, people usually employ the past tense. However, bamboo needles are being manufactured and sold today, so some hardening techniques are surely being employed nowadays. Does someone know the technique they are using?
2. Eleven sides without deterioration... Seems to be a really hard needle. Will it then be any better than a steel needle regarding record wear?
Thank you in advance.