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Thread: Mount and Reservoir Discussion
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06-10-2015, 11:13 PM #10
- Join Date
- Sep 2013
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- 308
There are about 8 extra io pins( i dont have the details memorized because we havent started using them yet)
a more direct Z height will definitively get implemented something like a g code to the micro that says goto this height travleing at this speed.
more on calibration..
We are working on a 3dmentional matrix of points that can be used to interpenetrate out all the non-linearities for all the places the laser can be in the build volume... but dam thats a wordy way to say it, and a year ago I wouldn't have understood what I just wrote.. so ill try to put it into an analogy too. This analogy by the way is actually how i prefer to think of it:
say you had a clear cube of Jellow and inside this cube of jelow was a bright red capital letter T.
To get the Red T in the clear block of jellow you cast the T first, then placed flopy red T in a cube and then poured clear jellow around it.
Great just one problem, The Upper Right tip of the T is sagging down, but the upper left side is bent towards you and also bent up.
What can you do to correct this.
what if you had put iron balls in the upper right and upper left parts of the T. Then you could use magnets pull on the balls just enugh to unwarp the
Saggy T. The balls would squish and warp the jellwo around them, Such that the T could become less saggy.
Now what if you had 100 magic balls that you could move magicaly in the jellow, then you could really straighten out that saggy T to perfection.
In this analogy above the magic balls are our calibration points. We get to magically move the balls because we have a mathematical representation ( a 3d matrix ) of the jello cube / build volume. The atoms of jellow are akin to every resolution point in our build volume, just like the position of each atom in affected by the balls near to it, we interpolate the position of every resolution point so that our calibration points affect the resolution points near them.
Currently we only have done the work to have 1 ball at each corner of the cube shaped build volume, so we only have 8 balls and there only in the corners.
This means currently we can only remove linear artifacts, for example we can correct for things like the entire T leaning, but we cant yet unwarp a specific part of the T. Some day we will do work to allow you to decide to have as many calibration points as you like, and when that day comes your printer could be much more accurate.
hope that analogy made thing better not worse
Glad to here of the progress on the injector pump idea already Toasterboy!
lets see whats next.., pump size.. We have been making our own pumps so now its time for my napkin math
Today I was printing in a 6 in diamter cylinder, and there are 206 pump rotations per mm so ....
6* 2.54 = 15.24 cm diameter
15.24/ 2 = 7.62 cm radius
7.62 * 7.62 = 58.06
58.06 * 3.14 = 182.32mL
182.23/2000 pumps per cm = .091 mL per pump rotation
The pump uses between 100 and 200 mA depending on speed which is controlled via votages between 3 and 20 volts.
as for how its doing in the z resolution. I think there is a recent post where I explained this in some detail... ill see if i can find it...
EDIT: found the posts with details about z resolution, there on the 3rd page of update 51 thread.. here is a link
http://3dprintboard.com/showthread.p...Printer!/page3
Great questions everyone, Im happy to answer them now while the community is still small, someday there may be thousands of people joining and posting, and Ill be glad to have all the help I can get from those of you who are here now learning about the peachy printer in detail before anyone elseLast edited by rylangrayston; 06-10-2015 at 11:33 PM.
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05-20-2024, 12:56 AM in Tips, Tricks and Tech Help