LR 3D Printer

thingiverse

LR (LabRat) 3D Printer. 3d printer intended at first to test different mechanical parts and firmware proved to print decently to be used as learning printer or backup printer. I like to test any upgrade before implementing it but I feel uncomfortable to do this on a calibrated printer so I designed this printer and used parts laying around after upgrading both main printers. Main features: - as simple as possible; - easy to assamble and disassamble; - configurable according to desired dimension and/or available components. Can be configured for any square or rectangle bed below 200x200 mm and, why not, upgradable to I3 configuration [LR 2.5](https://www.thingiverse.com/thing:4320334); As my both printers are wheels based the adopted solution was simple. For the base frame I used 2020/2040 european aluminium profile 5mm slot. Can be used any type. For the X/Y/Z axis V-slot profile. For tapping the extrusions holes ( M6x10 and M5x10 screws) I used an actual screw with chamfered tip and 2020 [Extrusion Thread Tapping Jig](https://www.thingiverse.com/thing:2764774). For X/Y carriages I remixed [Improved X-carriage by Nystao](https://www.thingiverse.com/thing:2833791) . There are 2 variants for X carriage : for Anet (E10/E12) and for Creality (Ender, CR10). Wheels axis M5x30 screws X and Extruder motor holders : solution used at Anet E10/E12 (inside wheel under x axis) and wheel tensioner with custom printed eccentric. Wheels axis M5x45mm. For all Wheels I used 8mm spacers. Mine bed is the weakest link: 180x180mm, 120x120 silicon 12V heating pad and cork sheet and only 1.6mm aluminium sheets (Should be used thicker aluminium plates but I did not have). [Bed leveling knob](https://www.thingiverse.com/thing:3460581) Endstops - all are adjustable. I used only the microswitch from Reprap endstops. For Z [Compact Opto Servo Probe](https://www.thingiverse.com/thing:3756428) . X/Y belt tensioners: [fessyFOO's Yet Another Belt Tensioner](https://www.thingiverse.com/thing:2502801) or any other belt tensioner for 2020 profile. Extruders: I used original Ender 3 extruder with [gearbox for standard bowden extruder](https://www.thingiverse.com/thing:3361955), and [Pitan extruder](http://www.thingiverse.com/thing:2728600) Firmware : Marlin 2.0 for Ender 3 except of course bed dimensions, x/y offsets, board and display. All parts printed in PLA. It was my playground for about six months testing opto-servo probe, Pitan, Drakon and gearbox extruders, SKR 1.1, SKR 1.3 and Anet 1.0 boards. In "Thing Files" I added a 3mf file for 3d view of assembly (in 3d builder for Windows 10 users). It's designed in Designspark Mechanical free and export as STEP format is not available. Printed things: - Vibration a.k.a. ripple a.k.a. shadow a.k.a. ghosting test - https://www.thingiverse.com/thing:277394 - Cali Cat - https://www.thingiverse.com/thing:1545913 - 3D Benchy- https://www.thingiverse.com/thing:763622 - Spiral Sphere Ornament - http://www.thingiverse.com/thing:3265323 - Christmas Tree Light - https://www.thingiverse.com/thing:2670306 09.01.2020 replaced in STL.zip "Y carriage.stl" 11.04.2020 updated in STL.zip "E motor holder.stl" and "Eccentric.stl" 01.05.2020 added Confiduration.h and Configuration_adv.h, Marlin 2.0 18.06.2020 added 2040 profile for Y axis configuration. Use Y carriage 3 or 4 wheels , Y motor mount and corner brackets from [LR 2.5 3D printer](https://www.thingiverse.com/thing:4320334). For more pictures and videos https://photos.app.goo.gl/PNfaTJG17P3fEyeN6