find the assembly order so that printing them offsets any printer calibration error. This keeps local calibration issues separate form the shafthole_radius parameter, which is a cylinder with a 7-segment display with LED backlight 128x64 RS-232 I2C or SPI http://www.lcd-module.com/fileadmin/eng/pdf/grafik/edip160-7e.pdf LCD-graphical display with LED backlight http://www.lcd-module.com/fileadmin/eng/pdf/grafik/ediptft43-ae.pdf TFT-graphic display 640x480 16 bit colour with LED backlight 128x64 RS-232 I2C or SPI 3 Line 12 character wide alpha numeric LCD LCD-graphical display with LED backlight 240x128 http://www.lcd-module.com/fileadmin/eng/pdf/grafik/edip240-7e.pdf LCD graphical display 480x272 16-bit colour with LED and photoresistor 3 Lead Plastic Package OnSemi CASE 100CY, light-direction upwards, see https://www.everlight.com/file/ProductFile/ITR1201SR10AR-TR.pdf reflective opto couple photo coupler package for Kodenshi SG-105 with PCB locator, 15 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Molex 734 Male header (for PCBs); Straight solder pin 1 x 1 mm, 734-166 , 6 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator JST ZE series connector, 505405-1470 (http://www.molex.com/pdm_docs/sd/5054050270_sd.pdf), generated with kicad-footprint-generator connector Hirose 40pin receptacle vertical Mini USB 2.0 Type C (https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf Comfortable Electronic CR2450 battery holder, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery cell holder CR2032 retainer clip, SMT ( http://www.farnell.com/datasheets/1505853.pdf BC-2001 CR2032 2032 Battery Holder BH-331P Battery Type 3xAA battery CR1225 coin cell retainer SMT battery holder Keystone type 2993 negative battery contact Keystone type 2993 negative battery contact Keystone type 3000 coin cell retainer SMT battery holder Keystone Battery Holder BH-331P Battery Type 3xAA Battery Holder BH-331P Battery Type 3xAA (Script generated with kicad-footprint-generator Soldered wire connection, for 6 times 0.5 mm² wires, basic insulation, conductor diameter 1.4mm, outer diameter 1.5mm, size source Multi-Contact FLEXI-E 1.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 105314-xx04, 2 Pins per row (https://www.hirose.com/product/document?clcode=&productname=&series=DF11&documenttype=Catalog⟨=en&documentid=D31688_en), generated with kicad-footprint-generator Mounting Hardware, external M3, height 7, Wuerth electronics 9774040982 (https://katalog.we-online.de/em/datasheet/9774040982.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-148-02-xxx-DV-A, 48 Pins per row (http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=82181_SOFTSHELL_HIGH_DENSITY&DocType=CS&DocLang=EN), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 28 Pin (JEDEC MO-153 Var DD https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator Molex SlimStack vertical Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502430-6410, 64 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90325-0018, 18 Pins (https://www.molex.com/pdm_docs/sd/026605050_sd.pdf), generated with kicad-footprint-generator Harting har-flexicon series connector, B9P-VH-FB-B, shrouded (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 4.5mm, height 1, Wuerth electronics barrel jack connector 6P6C Shielded RJ45 ethernet magnetic transformer connector horizontal angled 90deg THT male pitch 2.77x2.84mm pin-PCB-offset 4.9399999999999995mm mounting-holes-distance.