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Gemstones, Minerals & Fossils
Lapidary
How Close Can I Cut ?
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<blockquote data-quote="Wally69" data-source="post: 565365" data-attributes="member: 1916"><p>Depends on the material and how it chips Keith, the other thing is to get a sweeping curve , you generally need to do a couple of passes to get the curve shape right. I think 1mm is the closest I would go with a saw blade, but this doesnt leave any margin for saw creep of having a bad day. I have oversawn a couple of times but have been able to redraw my shape by moving it slightly. Once I have had to reduce my intended size and a couple of times have had to adjust the shape due to big chips due to a shitty saw blade and too much pressure.</p><p></p><p>Corner chips will generally be removed in the cabbing process but at the end of a cut some materials will let a larger chip fly off, so I always leave the exit cuts at about +3mm and grind down ........ and always question if I could have gone closer <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" />layful: 8.( <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" />layful: 8.(</p></blockquote><p></p>
[QUOTE="Wally69, post: 565365, member: 1916"] Depends on the material and how it chips Keith, the other thing is to get a sweeping curve , you generally need to do a couple of passes to get the curve shape right. I think 1mm is the closest I would go with a saw blade, but this doesnt leave any margin for saw creep of having a bad day. I have oversawn a couple of times but have been able to redraw my shape by moving it slightly. Once I have had to reduce my intended size and a couple of times have had to adjust the shape due to big chips due to a shitty saw blade and too much pressure. Corner chips will generally be removed in the cabbing process but at the end of a cut some materials will let a larger chip fly off, so I always leave the exit cuts at about +3mm and grind down ........ and always question if I could have gone closer :playful: 8.( :playful: 8.( [/QUOTE]
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Gemstones, Minerals & Fossils
Lapidary
How Close Can I Cut ?
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