Core-T Printed Wheels All Axis Spectra Driven

thingiverse

Update 11-06-14 I've made significant improvements to the Core-T's Z-axis. Excessive play from heavy weights on a 3060 extrusion had caused issues, but I found that narrower bearings were the main culprit. Replacing them with a more constrained design solved the problem. I'm exploring linear bearing designs at an equal cost to traditional bearings. Zinc-plated BBs or airsoft pellets could also provide a solution. Update 10-15-14 A major breakthrough: the Z-axis can now handle weights easily due to upgraded motors. This modification makes my belt-driven design similar to another printer I've worked on. To share, it includes parts like motor brackets available from SWFL3D: http://www.thingiverse.com/thing:15180. Update 09-29-14 Exciting News! After extensive work, the X and Y axes of Core-T are operational and remarkably smooth thanks to improvements in carriage designs which removed the need for costly 5 mm screws. There's a link here for further build info. Now that both axes function as intended, let's turn attention towards completing the Z-axis: http://www.thingiverse.com/thing:313048 The project involves CoreXY kinematics driven by a spectra line, ensuring it avoids expensive openbeam and V-slot designs which typically range between $20 to $50 each, although it depends on sources such as https://makerslide.org. This design uses only printed wheels, no linear bearings, eliminating one-time costs. Here's my link for further study: http://www.instructables.com/id/The-Easy-and-Cheap-Bridge-On-Metal-Sheets/, http://en.wikipedia.org/wiki/Fused_Deposition_Modelling. My project initially ran with belts before settling on a more viable spectra design after an unexpected shortage. In fact, my designs can now be adjusted for various build sizes with these spectra components from here: http://reprapworld.com/wiki/Spectrum. Core-T also incorporates 20 mm T slots. You should consult http://reprap.org/wiki/T-slotted and take a peek at some parts to give this idea a test run! Core-T prints 30 mm by default. Core-T uses a MKII design of which was shared in full for everyone at https://drive.google.com/folderview?id=0Bw6sIqP7a4lTMDl6VE9VNGFYZ0U&usp=sharing. Credit: the following individuals who have generously allowed Core-T to flourish - here is LoialOtter, AndyCart & capitaenz! http://www.thingiverse.com/things by their username! Also you can visit at: www.hobbyKing.co.uk/Content/ProductCat/PF_CADfiles/Corespec3D.stl.