Klarinet Archive - Posting 000960.txt from 2000/08

From: "Mark Charette" <charette@-----.org>
Subj: Re: [kl] Reamers
Date: Mon, 28 Aug 2000 22:29:58 -0400

From: "William Wright" <Bilwright@-----.net>
What type of tool is used on
a wood clarinet in the first place? Must the tool spin so fast that it
would melt or soften plastic material? Is it suited (perhaps with
modifications) to cutting plastic rather than wood? And so forth.
------
I can't answer the clarinet question, but as a former occasional machinist
(albeit with much lesser qualifications than Anne Bell) I'll tell you that
the tools and turning speeds of different materials varies widely. Before
turning or drilling any ferrous or non-ferrous material I would consult a
guidebook which would give me appropriate speeds with and without
lubricants, tool cutting angles, tool material, maximum feed speeds for
desired surface qualities, and more. I've turned, machined and drilled many
different materials (including lignum vitae, an incredibly dense wood) and
chewed up both tools and materials by not following that guide ...

A manufacturing plant trys to maximize production by turning under maximum
speed and figuring in tool wear - stopping a machine often to change out the
tooling & recalibrating the setup is expensive. Dull drill or turning bits
will smoke and destroy the surface characteristics on wood. On some plastics
they'll start chipping and chattering and burning, on other plastics it'll
cause reflow of the material or other unwanted effects.

Reamers for different woods, metals, and plastics have differently angled
cutting surfaces so they can cut efficiently and smoothly.

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