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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| alliedhightech:mcmaster [2021/04/23 23:31] – mcmaster | alliedhightech:mcmaster [2021/04/24 18:03] (current) – mcmaster | ||
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| Line 76: | Line 76: | ||
| * Post 1.49" | * Post 1.49" | ||
| * Could I mount stopcock to it somehow? | * Could I mount stopcock to it somehow? | ||
| + | * Feeler gauge test | ||
| + | * Pointed inside | ||
| + | * About 30 um variation | ||
| + | * Good enough for now: not great but not terrible | ||
| * Main crank 40 TPI | * Main crank 40 TPI | ||
| * Wheel is marked in um (635 um) | * Wheel is marked in um (635 um) | ||
| Line 96: | Line 100: | ||
| * Net: 12.65 - 0.840 - 0.277 + 0.116 = 11.649 | * Net: 12.65 - 0.840 - 0.277 + 0.116 = 11.649 | ||
| * ...but I'm using magnetic sheet. Not the same | * ...but I'm using magnetic sheet. Not the same | ||
| - | * Ah I am using 50-150-500, but I put it on a magnetic sheet | + | * 50-500-500 instead of 50-150-500 |
| * Magnet: 735 um | * Magnet: 735 um | ||
| * Cloth: 450 um (840 um official) | * Cloth: 450 um (840 um official) | ||
| * Let's use official number | * Let's use official number | ||
| * 12.65 - 0.840 - 0.735 - 0.277 + 0.116 = 10.914 mm | * 12.65 - 0.840 - 0.735 - 0.277 + 0.116 = 10.914 mm | ||
| + | * Crank: 25.4 / 40 = 0.635 mm | ||
| + | * 10.914 / 0.635 = 17.2 cranks | ||
| + | * Remainder: 0.119 mm | ||
| + | * Settings | ||
| + | * 225 RPM CCW | ||
| + | * Rotation: full speed (8) | ||
| + | * Osc: 3 | ||
| + | * 0.05 um silica | ||
| + | |||
| + | ===== 2021-04-24 ===== | ||
| + | |||
| + | Continue lapping | ||
| + | same settings | ||