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Gemstones, Minerals & Fossils
Lapidary
Robilt Faceting Machine
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<blockquote data-quote="AtomRat" data-source="post: 198908" data-attributes="member: 3111"><p>By parallel head, he means that the whole 'arm mechanism' moves as level in height as the lap ( disk ). The tip of the pole which holds the rock should touch the surface of the disc evenly and not dig deep or lift leaving a gap under if you slide the arm from one side of the disk or the other set at an angle ( make sure you dont do this test on a copper or diamond lap. The main lap )....if that makes sense..</p><p></p><p>The hard stop is the pin or bolt ( bush & screw ) that the indezing arm stops at whichever angle it is set top. So the part the arm lands on or uses to stop at the correct angle. If its been used lots it could be worn down by a fraction and cause difficulties starting off with the machine</p></blockquote><p></p>
[QUOTE="AtomRat, post: 198908, member: 3111"] By parallel head, he means that the whole 'arm mechanism' moves as level in height as the lap ( disk ). The tip of the pole which holds the rock should touch the surface of the disc evenly and not dig deep or lift leaving a gap under if you slide the arm from one side of the disk or the other set at an angle ( make sure you dont do this test on a copper or diamond lap. The main lap )....if that makes sense.. The hard stop is the pin or bolt ( bush & screw ) that the indezing arm stops at whichever angle it is set top. So the part the arm lands on or uses to stop at the correct angle. If its been used lots it could be worn down by a fraction and cause difficulties starting off with the machine [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
Robilt Faceting Machine
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