Green things are grounded and blue things move in the Y direction.by nicholas.seward - Developers
Repetier supports CoreXZ but I don't know about auto leveling. (Note: I have leveled my CoreXZ 1 time over the last year. That includes about 12 car trips.)by nicholas.seward - Developers
Yes my Marlin hack can go diagonal just fine.by nicholas.seward - Repetier
It sounds like a stepper is going the wrong direction. With the 3:1 it can get confusing. Try the below and report back. What happens when you do the following? (I assume you are doing a G92 X0 Y0 between each move or something equivalent.) G1 X10 G1 X-10 G1 Y10 G1 Y-10 I wouldn't use G91. No slicers output it so its support may be spotty for some firmware solutions.by nicholas.seward - Repetier
That is awesome! I press bearings in by placing them on a hot plate and then pressing the part down on top of it. If you don't like the play on the threaded rod, add something to shim it. Teflon tape is good if it is already close.by nicholas.seward - Polar Machines, SCARA, Robot Arms
I do not remember what version I used.by nicholas.seward - Developers
Change the acceleration values down until the table is okay. You also want to speed up normal moves but not the rapids.by nicholas.seward - Developers
Congrats! That looks very well built. Looks like you have lots of room to push up the performance based on your rapids. I wouldn't be suprised if you couldn't print 2 or 3 times faster.by nicholas.seward - Developers
Quotescottyo Quick question: When you load the XZ spools, do you mirror the wraps, or wind both spools the same direction? (Does it matter?) It doesn't matter. Once together you might have to flip stepper wires or change stepper direction in firmware but that is typical.by nicholas.seward - Developers
I will order a duet setup today. As to when I will have it done, probably before Christmas would be a safe time frame. I know I have to build a few before then. I don't see myself replacing electronics on working machines. 1) correct 2) correct (capitals are motors and lowercase letters are directions.) If X and Z both rotate clockwise one rotation when looking at their face-plate then the xby nicholas.seward - Developers
I would be glad to test it. I personally have 10 and tons of my students have them also.by nicholas.seward - Developers
Keep in mind that they probably mean a 1:1 CoreXZ and not a 3:1 one. I really threw a wrench in the mix by not making it 1:1.by nicholas.seward - Developers
Before I read the third paragraph, I would say it was a wiring issue or a bad driver. However, you say they make interesting grunting noises. With standard firmware the steppers should move smoothly. Y should work as it should and X and Z will cause weird diagonal motions. Is that what is happening? If not, it probably isn't a firmware issue and is probably a electronics issue.by nicholas.seward - Developers
Here are pictures for 3 approaches to the effector. I attached the string redirect for the black version.by nicholas.seward - Developers
Dc42: Is the x to z drive ratio 3:1 or is it adjustable?by nicholas.seward - Developers
I printed a square ring that slipped over the stepper. It ha 4 holes on two opposite sides. Two holes have string going to pulleys and two go to the tuner. I wish I had a picture or a model right now but I am out of pocket. In two days I can give you a model. However, I don't like this method and have gone another direction on my new ones. I will take a few pictures in a couple of days andby nicholas.seward - Developers
You can just ask how many strings leave the gantry in the y direction (12) and how many strings leave the effector in the x direction (4). That gives you a 12/4 or a 3:1 ratio.by nicholas.seward - Developers
QuoteGRAYWOLF Quotenicholas.seward @GRAYWOLF: Going off the rails here but you could do it with a static heating element. Transmit thermal instead of electrical energy. Kepping it slightly off topic - Would one of them infered heaters work? Yeah or even induction heating.by nicholas.seward - Developers
@GRAYWOLF: Going off the rails here but you could do it with a static heating element. Transmit thermal instead of electrical energy.by nicholas.seward - Developers
Quotepaucus I need to try it by hand I guess, but I would imagine that a long bridge WOULD be affected by gravity, so if you made it vertically it would be much straighter... maybe my intuition is wrong. Anyone try it? But sagging is due to gravity, so if you remove it, it should not sag. And with FDM bridging is the big problem to getting better prints of ANY geometry... Paucus Absolutely. Bby nicholas.seward - Developers
@Paucus: The problem with just rotating the whole printer is that it gains you very little. The plastic forces are much much greater than gravity forces. For the same reason that you have seen printers work in various orientations, you won't get much benefit from changing the direction of gravity. Bridging may be improved (gravity does come into play with bridging) but overhangs will still havby nicholas.seward - Developers
No endstops. Everything can be driven by hand so it takes no time to manually home the machine. My theory is it is something else to adjust and something else that can fail. However, it would be easy to add stops.by nicholas.seward - Developers
Checkout RichRap's Sli3dr. I don't know where his layout came from but it is also coplanar but has the added benefit of being antiracking.by nicholas.seward - General New Machines Topics
I am pretty sure Topolabs got bought out. I want to say it was AutoDesk but it could be Adobe. I did a google search to verify and there is no public information about a buy out so take that with a grain of salt.by nicholas.seward - Developers
@JustAnotherOne: Yeah, you are right. I looked up CureEngine and it is indeed C++. There is no magic wand of compiled vs scripting languages that will account for the difference between the runtimes of Skeingforge and Cura. It is all about smart design. (For some perspective, my student's code initially took hours to do his nonplanar slicing. It now takes less than a minute. I also know thaby nicholas.seward - Developers
@JustAnotherOne: By speed not being an issue, I mean that JS can be just as fast as CURA (or faster). Cura and Skeingforge are both written in python. JS usually benchmarks above python (that is even before stuff like asm.js that will get you to within a factor of 3 of C performance). However, that is not the point. My claim is that with smart algorithm and data structure choices (similar toby nicholas.seward - Developers
@JustAnotherOne: 1) Speed is not really an issue. Cura is a great example of a high level language implementation that is fast. With smart algorithms and data structures many operations can be O(1) or O(log(n)). I never used Skeingforge but I suspect that it does many things with O(n) complexity or worse. 2) I will look at Cura but remember that it was designed for planar printing. There aby nicholas.seward - Developers
Here is another result of my students generalized nonplanar slicer. He is planning on making it open source although it isn't polished enough for a product for those that don't want to dig in the code. I personally am trying to hobble together a nonplanar slicer for html5. My baby steps in no particular order are... 1) Allow wavy layers for fun. (Nick Parker test the strength and didn't geby nicholas.seward - Developers
@Dejay. I would like to note that gravity has very very little effect on how a printer works. Take any rigid printer and flip upside down for proof. The 5D slicing that I am working on doesn't concern itself with mechanical properties but it will likely make the part stronger. The secret will be to make it just as easy or easier to use than a 3D slicer.by nicholas.seward - Developers
@VDX: Why do you think the Carbon3D can go so much faster than any other "endless" approach? Have we just not pushed the other methods to their limit? (I hope the answer is that we just haven't thrown the same amount of lumens/power at the problem as Carbon3D has. I hope this because I am sure Carbon3D have filed a patent and I don't want to wait a couple decades to have this kind of speed inby nicholas.seward - General