This is my custom designed 3D printer currently named the Tazmania 3D Printer. The printer is meant to resemble the Lulzbot Taz 6 3D Printer. My goal in designing this printer was to have no compromises and achieve near perfect dual extrusion print quality.
Features in the design
---Misumi linear rails
------Dual 15mm width rails for the Y axis
------Quad 12mm width rails for the Z axis
------42mm width rail for the X and U axis
---Independent dual X carriages for dual extrusion (IDEX)
---300mm x 300mm x 360mm print volume
---Dual E3D Titan Aeros 1.75mm
---110v silicone heater for fast heating times
---Lulzbot Taz like auto bed leveling
---High torque Nema 17 stepper motors
---Duet Ethernet 32 bit controller
---24v power supply for smoother stepper motor movement
---Paneldue 4.3" touchscreen
This design is still in development. Many of the parts still need to be adjusted and look better. The current version is a rough draft essentially. I plan to have the printer designed and built by summer 2018. I will provide updates occasionally. By the time the printer is built I plan to have a thorough set of instructions to build the printer, a full bill of materials, as well as prints to align certain parts and assemblies. As of right now, the printer costs a little over $3,000. Mind you, all parts currently listed in the spreadsheet attached are mostly sourced from the USA, so you might be able to build it for less if you source some parts from China.
I designed this printer using Autocad 2018 and Fusion 360. The design uses a few parts sourced from Aleph Objects and E3D-Online and a few parts derived from Aleph Objects' parts.
Parts sourced from Aleph Objects in the design are
---the corner brackets
---the y axis brackets
---and the y bed plate
Parts sourced from E3D-Online in the design
---E3D Titan Aero
Parts derived from Aleph Objects are
You can find the Aleph Objects parts at http://download.lulzbot.com/TAZ/6.02/
You can find the E3D-Online parts at https://e3d-online.dozuki.com/c/Titan_Aero
Almost all parts are pretty much done, and have been adjusted and made to be aesthetic. A few parts may change once I test tolerances for things like lock nut slots. Still needs a number of minor parts to be designed or modified like bed corners, wipe mount, flush switch mount, and a few more.
Updated the Z_Upper.stl, Z_Lower.stl and Tazmania_3D_Printer.dwg and added the Bed_Corner.stl file. All that is left to do is adjust the X carriage belt clips, and design the flush switch mount.
Big updates to the Y axis. Updated the Y_Foot.stl, Y_Motor_end.stl, Y_Corner.stl, Bed_Corner.stl, and the Tazmania_3D_Printer.dwg. I also added the Frame_Foot.stl file because I apparently forgot to do so before. Probably one more update to come for the y axis, once I test parts.
Big updates all around. Currently, I am printing and tweaking the Y axis, so that is the area that has been changed the most. I have also made some aesthetic changes as well. I will update the renders tomorrow, as well as post pictures in a week or two of the build itself.
After much research I have decided to make a few changes to my design that are in progress. The biggest is to use a belted z axis instead of ball screws. I have chosen this for a number of reasons. The first being that using a belted Z axis would save a few hundred dollars. The second is that it actually performs amazingly well, and would reduce the possibility of binding if a ball screw were to be used. My belted Z axis would use planetary geared stepper motors, 10mm wide steel reinforced GT2 belts, and a unique pulley system that would provide equal force to the X axis in both the downward and upward direction to prevent against bouncing. See here... http://tinypic.com/view.php?pic=eq8ppx&s=9#.WlKDHGinHcs
Other changes coming...
--- 10mm wide steel reinforced GT2 belts for all axis'
--- Custom designed control box
--- Cable chains
--- Nema 23 stepper motors for the XYU axis'
Changes made today...
--- Started build log
--- Added list of parts that are tested and finalized
--- Added a render of the current design
--- Updated the Tazmania.dwg file
I have temporarily put this project aside for a number of reasons. The first being that I wanted experience custom designing and building a 3D printer from scratch before I made this ~$3000 custom designed 3D printer to build from scratch. You can check out the other 3D printer I designed for this purpose on my profile. Even though that printer is almost done, I have learned a good deal in the process that will effect this design; Those changes are forthcoming. The second reason is I am still debating what to do with the Z axis. I have almost finished a design for a belted Z axis that uses a 1:4 pulley system instead of a planetary stepper motor to eliminate play and save cost, but I am still not sure if it would be a more practical choice. I would appreciate any input. The last reason being that my budget is limited and there are a few other small projects I want to get out of the way first. I now expect to have this printer made in a little over a year. I have not abandoned this project, I am still set on building this printer.
Parts That Are Tested And Finalized