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I am also adding a Digital PID Temperature Controller with a relay and thermocouple to run the enclosure heater for filament drying. Since the...
Lookin' pretty sweet! I think you're almost there. I'm not sure how you are going to run your belts above and below the gantry though. I really...
I didn't realize you were increasing your build area to 20"x16" - I haven't seen any decent prices for anything over 16"x16". I have read that...
Seems kind of pricey for that thin of a piece! And I would be afraid of trying to mount that thin of a piece of material semi-permanently to my...
Vertical movement of your lower rod will provide tensioning adjustment for your red belt. And if you move your Z stepper and drive pulley closer...
I suspect that for greatest longevity it would be best for the plate the be left at the top (almost fully coiled springs) - not something it will...
During one print cycle, the average printer cycles up and down the Z axis twice. Once for homing/calibration and once for the actual print. So...
There are also these @ 3.5lbs. each: http://www.amazon.com/dp/B0085ZXEDW/ref=biss_dp_t_asn They are a little larger but are only $12.67 shipped...
You already have a horizontal rod available for your upper pulleys - 8mm right? You could use 8x15x24 linear bearings ($0.80 from robodigg) - or...
I like it! Properly balanced, constant force springs would also reduce Z axis drop forces in the event of loss of power to the steppers. In fact...
Now those would do the trick quite nicely! A Rostock-like setup would probably be ok (and definitely cheaper) - but I believe the performance of...
I have a friend that designed large format (12" x 24" or bigger, can't remember) 3D printer with counter weights for his Z-axis. Haven't seen one...
That arrangement would also further reduce belt length which would be a plus w.r.t. potential stretching effects from the weight of your Z plate...
I would be afraid of belt stretching effects introducing Z height error. However, I would avoid belt crossover regardless; I see no way of doing...
Yes, my design uses largely uncut rails for multiple reasons: max build volume, build simplicity, and ability to build directly with available...
I am in the process of designing and building an H-Bot Core xy type 3D printer with a 400x400x400mm build volume and fixed build plate. Another...
Let me know your thoughts about the CRAMPS after you fire it up with a BBB and check it out... I'm now waiting for the arrival of my BBP 1S:...
Just got my Openbuilds rails in (along with a bunch more boxes of other components).... :( was not all all happy with the state of the rails....
I'm not sure I understand your vertical/horizontal references. Whether I mount the gantry plates horizontally (=) or vertically (||) the hot end...
You can mount them via the top or back. I actually may still opt for the back mount. It's just a matter of how much of a quick release it will...
