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From Pumping Station One
Boyer Schultz 6-12 Surface Grinder (view source)
Revision as of 21:29, 8 August 2018
, 21:29, 8 August 2018→Safety: added wheel inspection section
=== Safety ===
=== Safety ===
==== Wheel Inspection ====
<blockquote>When a grinding wheel is received in the shop or removed from storage, it should be inspected closely for damage or cracks. Check a small wheel by suspending it on one finger or with a piece of string. Tap it gently with a light nonmetallic instrument, such as the handle of a screwdriver.
If the wheel does not give a clear ring, discard it. All wheels do not emit the same tone; a low tone does not necessarily mean a cracked wheel. Wheels are often filled with various resins or greases to modify their cutting action, and resin or grease deadens the tone. Vitrified and silicate wheels emit a clear metallic ring. Resin, rubber, and shellac bonded wheels emit a tone that is less clear. Regardless of the bond, the sound of a cracked wheel is easy to identify.</blockquote>
==== Operation ====
==== Operation ====
