TITANXY (Fixed Build Plate, Quad Z Screw, CoreXY)

UPDATE SEP 23 2019
this design is CC BY
Fusion 360 files are here Fusion

lots of changes since the below summary

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TITAN-XY is a large CoreXY 3d printer with a fixed Build plate and XY Gantry that moves along the Z axis

Current build is based on Openbuilds Vslot with 40x40 extrusion for the vertical beams
Single Nema 23 Z motors drive 4x acme screws that raise and lower the XY Motors and Gantry
Completely fixed build plate keeps prints stable.

Current Specifications
X Build volume = 295mm actual available motion
Y Build volume = 385mm Max (300 usable)
Z Build volume = 340mm Currrent (400 once complete), can be easily upgraded to 900mm

Aluminum Heated bed with Silicon heater and Glass and PEI Print surface, Buildtak Magnet flex plate system used

X & Y use 0.9 degree Nema 17 Motors with 14tooth GT2 9mm Pulleys
Z used 1.8 degree Nema 23 Motor

Duet Wifi controller used, 24v power supply
Direct Drive Bondtech BMG Extruder, E3D V6 Volcano, LDO 0.9 Cool Power nema 17 Stepper,
BLTouch bed probe

X & Y Axis using cheap chinese MGN12 Linear rail and carriages, (dual rails on X to enable easy carriage mounting, and to increase rigidity

Design was inspired by H-Bot & C-Bot

Link to Work in progress - Build of Material List
Link updated for public access