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YYC: Slat for deck of CNC machine
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<blockquote data-quote="Alexander" data-source="post: 6031" data-attributes="member: 7"><p>If you want to apply tolerances to your drawing you should use GD&T (geometric dimensioning and tolerance) GD&T is a bunch of symbols and rules to remember. They tell the person manufacturing your parts what the allowable deviation from nominal is. Before i go applying tolerances to your drawing i must say in the province of AB we more commonly use imperial measurement. All material available here will be in imperial so i will suggest changing the thickness from 12.5mm to .5" Here are some simple rules that apply to your drawing. First add decimal points even to the round numbers. Then in the ledger leave a note such as .x = +/- .75mm .xx= +/-.125mm this will help the machinist understand what is required. .75mm is a assumed for fabrication if no tolerance is given and .125mm is the default tolerance for machined parts IMO.</p></blockquote><p></p>
[QUOTE="Alexander, post: 6031, member: 7"] If you want to apply tolerances to your drawing you should use GD&T (geometric dimensioning and tolerance) GD&T is a bunch of symbols and rules to remember. They tell the person manufacturing your parts what the allowable deviation from nominal is. Before i go applying tolerances to your drawing i must say in the province of AB we more commonly use imperial measurement. All material available here will be in imperial so i will suggest changing the thickness from 12.5mm to .5" Here are some simple rules that apply to your drawing. First add decimal points even to the round numbers. Then in the ledger leave a note such as .x = +/- .75mm .xx= +/-.125mm this will help the machinist understand what is required. .75mm is a assumed for fabrication if no tolerance is given and .125mm is the default tolerance for machined parts IMO. [/QUOTE]
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YYC: Slat for deck of CNC machine
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