H Configured 3D Printer
Description
I used Stock Drive Products (http://sdp-si.com) largest G2 belt which is 87.323 inches (2218 mm) long (P/N A 6R51MB09060) as well as their 10mm Self Lubricating Acetal Bearings for the 10mm Z-Axis (P/N A 7Z44MPSD10MAF), as well as a Z-axis LM10LUU version bearing holder. Use whichever you prefer.
I used thingiverse.com/thing:20850 Taylors Gregs Wades MK6 filament feed for Ultimaker, by Taylor Alexander, and designed a Bowden feed mounting bracket (short and long) to accept the filament feed system. With my Filament feeder (3mm), I was trying to utilize Wired1's thingiverse.com/thing:31322 dove tailed design in my Hot end slide.This will require additional effort since my fit did not work out as anticipated.
I was shooting for a build volumn of 10"x10"x10" (394 mm x 394 mm x 394 mm). The belt length was a limiting criteria. I'll spend more time on this issue at a later time. I wanted to get a prototype platform working at this time. I'll post the Alibre files for those of you that may be using Alibre as your 3D modeling software and choose to modify my work as well as a .dxf assembly layout drawing.
Being that this is my first thingiverse publication, I kindly ask your forgivness for any mistakes I may have made. I will work toward making future postings more professional.
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Hi, thank you for sharing this nice design. I am trying to build it. Could you please explain what did you use to mount z-motor and lead screw? The parts seem different from printed parts. Thanks in advance
I had some aluminum bar 1/4" x 2.0" which I cut into two pieces 2.5" long. I mounted the stepper motor to the top plate, and on the bottom, I bored a hole out to house a 10x22x6 bearing. I sandwiched the plate and bearing with a Misumi thrust washer (JZW10) and shaft collar (SCSJ10-6) on each side of the bearing plate. This fixes the lead screw shaft to chassis to eliminate any z-axis motion. I added three photos of the above. Should be getting back to the build shortly. Incidentally, before I started in 3D printing, I built a CNC machine which allows me to fabricate in various material medias.
Sorry All, Sort of stepped aside from the build due to Holiday obligations and a couple of school science projects for a couple of neighbor children. Should be getting back into it some time in February.
This is very cool. I especially like your tiny hot end! Makes my ultimaker's hot end look huge by comparison. I still have the same question as I had with ckaos' design: How badly does the cross bar skew out of square when you make fast motions? Have you considered turning the X-bars horizontally and using three linear bearings (two on one side, one on the other) for this reason?
That is a excellent printer you have engineered. Thank you for sharing it. Do you know when you will print with it, some videos would be awesome. Do you have any estimates of the travel speed in the X-Y plane?
Looks very nice, I got excited about ckaos and CoreXY in general, but never got beyond building the upper gantry.
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Can you provide more info on the hot end, maybe post the design files ?