1405 Simple X Expanded (Single/Double Precision)

youmagine

Expand the bearings to boost rigidity. Move the drive motor to the center to enhance stability. The minimum print area required for the motor mount is 80mmx147mm. Multiple BedEnd files have been uploaded for various bed screw widths. The minimum BedEnd required print area will depend on the BedEnd used. Increase idler bearings to 608 size for a better match with belt width and wider adoption worldwide. Build in (2) switch mounting locations for fans and power sources. Install built-in LED receptacles to illuminate power and fan symbols. This design can be configured as either single or double precision. For single precision, remove the bearing on BedEnd and install a tension block. The double precision configuration is shown. The Printrboard cannot be mounted under the machine, where the X motor is now. Mounting the Printrboard in a well-ventilated area will help protect the stepper drivers from overheating. It's crucial to keep printed plastic structural parts cool. I've included mounting locations for fans at heat sources (motors, extruder, etc.). Overheating must be avoided. I've also included a printable bed mount post if you want to use springs, featuring a captive nut. If you're going to mount directly using heated bed mounting holes, the heat will transfer through the screw and soften the mounting bracket. In this case, I recommend clamping a 3/8" wood dowel in the BedEnd and using a wood screw to mount your heat bed to the dowel. The wood will act as a thermal insulator. Additionally, some sort of insulator must be placed between the heated bed and the plastic BedEnd part. In the graphic, I show a sheet of cork under the entire surface, but it's only required between the heater and the plastic. Covering the rest of the area helps improve the efficiency of the heater. I've printed several iterations of this design, and everything seems to come out as expected. I'm designing my upgrades to the 1405 as I go, and haven't yet completed the 1405 build. Consequently, I haven't yet run this specific design, but there isn't much new here, so I don't expect any issues. If you find something wrong or that needs improvement, please let me know. Feedback and suggestions are welcome and encouraged. The evolution of this design was inspired by discussions about expanding bearing spacing for the 2014 Simple models. Thanks go out to those who supported the effort with their ideas, time, effort, and R&D. I simply combined those ideas into a 3D model. Please review the conversation: http://www.printrbottalk.com/forum/viewtopic.php?f=21&t=6860