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BackBe rendered, to get proper hole sizes threeUHeight = 133.35; //overall 3u height panelInnerHeight = 110; //rail clearance = ~11.675mm, top and bottom railHeight = (threeUHeight-panelOuterHeight)/2; mountSurfaceHeight = (panelOuterHeight-panelInnerHeight-railHeight*2)/2; hp=5.08; mountHoleDiameter = 3.2; mountHoleRad =mountHoleDiameter/2; hwCubeWidth = holeWidth-mountHoleDiameter; offsetToMountHoleCenterY=mountSurfaceHeight/2; offsetToMountHoleCenterX=hp;//1hp margin on each Could replace step IDs with a diameter between 16-19 mm: https://www.keyelco.com/product.cfm/product_id/826 Keystone #500, CR1220 battery holder, http://www.comf.com.tw/ProductDetail.asp?no=148 Keystone type 2993 negative battery contact Keystone type 2993 negative battery contact Keystone type 1058 coin cell battery CR-1025 coin cell vertical Panasonic CR-2450/VAN battery, https://industrial.panasonic.com/cdbs/www-data/pdf2/AAA4000/AAA4000D492.PDF battery CR-2450 coin cell holder Keystone #500, CR1220 battery holder, Memory Protection Devices P/N BC12AAPC, http://www.memoryprotectiondevices.com/datasheets/BC12AAPC-datasheet.pdf BC2003 CR2032 2032 Battery Holder BH-331P Battery Type C Plug Shenzhen Jing Tuo Jin Electronics Co 918-118A2021Y40002 ( https://datasheet.lcsc.com/lcsc/1912111437_Jing-Extension-of-the-Electronic-Co--918-118A2021Y40002_C399939.pdf ) also compatible with SOIC-8, 3.9x4.9mm².
- 0.956284 facet normal 0.343415 -0.685181.
- 0 0 N N 1.
- Normal -8.095816e-001 -3.787311e-003 5.869951e-001 vertex 4.101425e+000.
- Vertex -3.13695 1.34924 18.1565 facet normal -0.265169 0.618852.