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3D Printer Build

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jbolt

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#1
I need another project like I need a hole in my head but I have another project for my business that has parts that screamed 3D printer. A few months ago I purchased a Creality CR-10 because of the low cost to build volume. Its a nice printer for figurines and doo-dads but after many hours of tweaking I'm not getting satisfactory results in higher temp materials at reasonable print speed. I get a lot of ghosting especially in the Y axis at anything above 30 mm/s which is unsatisfactory for print times. The moving mass of the table and un-braced design of the Z axis rails lends to too much shaking. I also had problems with missed steps until I increased the stepper driver voltage on the Y axis motor.

After much research and looking at off the shelf printers I decided to just build what I want. I'm not recreating the wheel by any means. My build is based off the HyperCube Evolution which is a corexy design which is a remix of someone elses design . https://www.thingiverse.com/thing:2254103 . I have up-scaled so my build has a build volume of 400mm x 400mm x 400mm.

Specifications are:
CoreXY design
400mm x 400mm x 400m build area
30mm aluminum extrusions for the frame.
20mm aluminum extrusions for the built table frame
Nema 17 62 oz in 400 step motors on the X, Y & Z axis
Dual Z screws driven by a single motor
GT2 2mm pulleys with 6mm belts
12mm linear rails on the Z axis and 10mm on the X & Y
E3D-v6 24v hot end
Titan Extruder (will start as a Bowden setup)
120vac silicon heater for the bed
1/4" MIC-6 aluminum build table
Auto bed leveling
Duet Ethernet controller
24v 20A power supply
Currently not planning on a display as I run my prints from my desktop PC.

CAD Model
HC-OJS01.png


Parts printed on the CR-10. Printed in PETg
20171114_193112.png


Progress so far. Parts are still trickling in. Bed heater and optical limit sensors are on a slow boat from China and will not be here until December.
20171114_214305.png
 

ttabbal

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Jun 12, 2017
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#2
Consider installing vibration dampers on the stepper motors. They really quiet things down, and as they prevent vibration from transferring to the frame, they should help prevent artifacts in the prints.
 

jbolt

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Dec 3, 2013
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#3
Thanks, I did that on the CR-10 and it helped with the noise not so much with other issues. On the new one the motor mounts are printed plastic so that should help.
 

brino

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Jan 2, 2014
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#4
Watching!
popcorn.gif


Thanks for sharing.
-brino
 

jbolt

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Joined
Dec 3, 2013
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#5
Progress update.

To my surprise most everything came it, even the two items from China. The last piece I'm waiting for is the aluminum plate for the heat bed.

I have the Z axis assembly installed and I installed the drive belts for the XY. I'm now working on getting the electronics mounted. I decided to take a minimalist approach to the mounting. I'm generally not a fan of not have things in enclosures but this build seems to lend itself to the open electronics.

20171117_203823.png
20171117_203900.png
20171117_203914.png
20171119_140403.png
 
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