I see you used Fzz and Fzz bearings for corners P3 and P4. You didn't cover the alignment issues that this might cause or address in either post. I was wondering what the purpose of the different sized bearings on the corner posts P3, P4 was?London eye puns
It doesn't cause any alignment problems because the belt segments that ride on the larger pulleys don't have to be parallel to the guide rails. I used larger pulleys to get some extra clearance between the belt segments G and K, and A and J when the X axis is positioned near the corner pulley blocks.
The belt teeth face each other at segments G and K and A and J. I didn't want there to be any possibility of them contacting each other.Baixar musicas da novela para ver te melhor
You could probably just use F bearings instead of the Fs because the belts don't bounce around when the machine is operating. Hey Mark, we designed our own Core XY system and we are having some issues. I was hoping you might be able to help us troubleshoot. Do you have an email address I could send you the details? Best, Brandon. Nice Writeup Mark. Glad to know the pitfalls as I begin the design process of my corexy printer. First of all I want to thank you for making such a well thought out post on CoreXY layouts.
I've been using your information religiously for the last few months for my opensource CNC mill.Tao nick an xin
I know that CoreXY isn't the best for this application but I wanted to see if it was possible. I'm proud to say A-H are parallel to their residing axes I think that's the plural of axis? Anyways, I'm having problems with the belts CDEF having higher tension than the rest, and I'm wondering if you have any insight on why that might occur? In order to get the rest of the belts tense enough, CDEF has to be really tight and I'm afraid it will cause damage to the machine.
I must point out that my machine is much larger than most CoreXY applications, but I figured if everything was nice and parallel it could function. Thanks again for everything you've done for the CoreXY community. I'm glad you find the information useful. The tension in the belt, at least under static non moving conditions, should be the same everywhere.
The tension in segments C,D,E, and F may seem higher, but that's because they are usually shorter segments than the rest. When you push on any segment to test the tension, by deflecting the belt you're stretching it. If you deflect a mm segment of belt by 2 mm, you cause the belt to stretch by 0. If you deflect a mm segment by 2 mm, you're causing the belt to stretch by 0.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.
If nothing happens, download GitHub Desktop and try again.CoreXY 3D Printer Design vlog #15 - The 3D Model Explained
If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. The official release of the Voron 2. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. Sign up. Branch: Voron2. Find file.
Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit.
Latest commit ade Apr 12, Voron 2. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Travis tests. Nov 11, Stage 2 release, fixed some more orientations, added more parts. Apr 12, Nov 22, Apply changes to master to Voron2. Nov 15, Initial commit. Nov 13, Nov 21, Jan 14, Apr 11, This instructable describes an A2 plotter made from low cost aluminium extrusion, a piece of particle board, two NEMA17 stepper motors, and a few belts and pulleys.
Metal work is simple Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. The EasyDriver module expects the wires from each motor coil to be adjacent. Check that the motor wires don't alternate Now adjust the small potentiometer on the Big EasyDriver module for a current reading of 0.
The plotter also works with 6 volt 8 ohm stepping motors in which case the CPS power supply should be set to 6 volts and the motor currents set to 0. Wood saws are not required if you ask your timber merchant to cut the particle board and and pine supports to length.
The equation for this is:. Translating: the pen moves vertically when the motors to rotate in opposite directions. My first build comprised a single timing belt arranged in the shape of a letter 'H', or "H-Bot" configuration, as shown in photo1.
CORE XY 3D Printer - Overview
Photo 4 compares the original A4 plotter with the base of a larger A2 plotter described in step 7. The gantry and pen carriage dimensions are common to all plotters. The only additional parts required for the larger plotter shown in photo 5 are:. An H-Bot timing belt pulls the gantry ends in opposite directions whenever the pen moves horizontally see arrow directions in photo 1.
This causes a twisting motion known as "wracking". CoreXY requires two full-length timing-belts. Halving the original H-bot timing belt allowed the coreXY concept to be tested before longer timing belts were ordered. It also accounts for the reduced plot area shown in photo 2.
Bolt a length of 1. Ensure that both rails are parallel. The extrusions should be flush with the long edges of the base and positioned under the base such that the edges just protrude see photo. These extrusions act as railway lines for the overhead gantry. Screw 65mm x 18mm timber end supports to the base. The timber supports will need a rebate for the aluminium extrusions The outside 3mm holes are 25mm from each edge of the base . This distance ensures the the motors avoid the wooden support and the aluminium side rails.
These holes are located 25mm from the opposite end to the motors and This distance ensures that the pulleys avoid the wooden support. It also ensures that the timing-belts are parallel with the side rails. The 3mm motor mounting holes are spaced 31mm apart. This means that each spindle is Vertical Y-axis motion is provided by a movable gantry that runs along the fixed side-rails attached to the base.
Horizontal X-axis motion is obtained by running a pen carriage-assembly across two rails attached to the gantry end brackets. The V-groove prevents the gantry moving sideways.
Sandwich four "V-groove" pulleys between a 4mm nut and bolt.We launched three printer upgrades, two new printers, a new community hub, broke a world record… simply put: we were super busy and we could finally take a few days of rest. Yes, you read that right: k! Of course, all the departments grew in size, not just the warehouse or manufacturing teams.
Our software and hardware developers were pretty busy the whole year as well! However, in case you are experiencing trouble with your unit, check out our recently published guide that deals with common assembly issues.
Best CoreXY Designs on Thingiverse
And we also released two new MMU2S videos with useful tips and tricks. Check them out below:. And our slicer team implemented so many new things and changes into our slicing app, that we decided to redesign it and rename it completely — have you already tried our new PrusaSlicer 2.
PrusaSlicer 2. Plus, there are some improvements for model fixing, new filament manager and more! You can try the alpha2 version of PrusaSlicer 2. I am extremely happy what our slicer team, with Vojtech as the lead, was able to do in I truly believe that by the end ofPrusaSlicer will be the most used slicer out there! Our content team also created extensive documentation which will be live in the next few weeks, but that is just a cherry on the top.
We set ourselves the goal to ship the first day orders in December and it was crazy. Everybody was working day and night so we could ship as many orders as possible — before the winter holidays, of course.
We will be expanding our team this year to accommodate the additional load on our manufacturing. There are already dozens of photos of beautiful prints on Facebook, Twitter, and Instagram, so if you want to check out how the MINI performs, go right ahead. We already know what they are and how to fix them. So let me address them here:.Corexy vs cartesian for HQ, slow printing Posted by Edvardas.
I have been printing happily with my prusa i3 for years and a few weeks ago decided to build a new printer. Quickly I decided to go with corexy as designs were stiff inside a cube of profiles and build costs were reported to be reasonable. I am now mid- way finishing it.
However I am having some second thoughts wherever corexy is a right type printer for me. Here is what I want from the printer: - 0. I wonder if those metres of belts in XY plane might make repeatability suffer.
I am thinking now that what I should have built is a cartesian printer built inside a cube of profiles. I know there are people here who have been having some stiff cartesian printers and have moved to corexy so your comparison would be helpful.
Edited 1 time s. Reply Quote.
CoreXY CNC Plotter
I have an prusa i3 all aluminium and an corexy printer. My prusa was a good aluminium struture and is well tuned, but the corexy printer was far better print quality. The cartesian printer was several problems that the corexy do not have, from all the design i have see for me the corexy is the best so far.
With the prusa i must print at 50 to get an good print quality, with the corexy i printing at 80 amd still getting better prints. You can get an very rigid struture for an cartesian, but i still have the elefant in the room, the bed moving in the y I have both Cartesian and Delta, and I prefer Delta.
I haven't tried CoreXY yet, but I think it would be my choice for a larger printer. Large delta printer [ miscsolutions. Repeatability should be fine if your belts are properly tensioned and the printer isn't unreasonably large. Even at low speeds, the low weight of the CoreXY print head reduces the presence of ringing patterns in prints.
BTW, I run a bowden e3d lite6 on my printer, and I've gotten it to have virtually no stringing by changing retraction settings. Quote AlexY Repeatability should be fine if your belts are properly tensioned and the printer isn't unreasonably large. Don't worry about the belts, just use the right type for the right machine. I drive a big CNC mill with belts, with a pretty good repeatability, even if the gantry weights more than kg lbs. Just check that GT2 belts are enough for torque and speed.
Repeatability is mostly a question of build quality and setup. CoreXY is probably one of the best architecture for 3d printing.This is a standard drafting table. The horizontal bar is a straight-edge which can be moved up and down by the user. The criss-cross pattern of the cables stabilizes the bar and keeps it horizontal. This effect can be seen by following the direction of motion of the two cables which comprise the mechanism.
Note that all of the vertical arrows point in the same direction. You could imagine attaching a stepper motor to one of the pulleys. Now, the horizontal bar can be moved up and down under computer control. This might be called a single-axis CNC stage.
How might we modify this mechanism to convert it into a two-axis CNC stage?
The illustrated mechanism above is one solution. Rotating both motors in the same direction results in horizontal motion. Rotating both motors in opposite directions results in vertical motion.
This reference mechanism is functionally identical to the last figure in the prior section. Two additional pulleys have been added to shift the belt cross-over outside of the working envelope. Principle of Operation This is a standard drafting table.I wanted to built a really reliable printer which is ready for the E3D tool changing mechanism, when it is finally realeased. On my request E3D told me that a direct drive tool head should work.
This has to be tested. I also tried rails and bearings from IGUS but they did not work out for me to much play. While doing so I also added an "electronics compartment" on the back using aluminium extrusion. The printer features a built area of roughly xxmm. The y-axis is optimised to allow space for the tool changing mechanism. I included an Excel Sheet so you may calculate the requiered length, if you aim for a smaller or bigger version.
I opted to use a direct drive system, in the very first iteration which was more like a HypercubeI tried to use a bowden setup which did not work out at all.Cria de cotorra nanday
But after zip-tying my E3D titan to the x-carriage everything went fine. Obviously the Hypercube is not suited to mount a heavy extruder onto the x-carriage on a printer this size. Did you use this instructable in your classroom? Add a Teacher Note to share how you incorporated it into your lesson. I opted to use linear rails from Hiwin with a rail "width" of 12mm for the y- and 9mm for the x-axis.
You are free to order them from china approx. The z-Axis consists 2 10mm lead screws and 4 12mm smooth rods to keep everything in place. I tried different tool heads, mounting orientations and so on to find the "best" one. At first I tried an E3D V6 with bowden extruder. This did not work out at all. Due to the large travel distances the bowden tube flexed to much, causing to much friction in the tube and at last jamms.
I tried to solve this problem with different solutions, but none worked mounting the extruder on the back of the frame, on top of the frame in the center of the bed, using Capricorn and standard PTFE, using a filament oiler, re-assembling the hotend multiple times After this I zip-tied my E3D Titan directly to the x-carriage.
This immideatly solved all my jamming problems. Which is kind of true - it works perfectly as planned, but there was room for improvement. I tried mounting the E3D Titan Aero in different orientations to reduce the overall footprint while keeping a powerfull fan attached to it for part cooling. The problem with this solution is the bulkiness of the assembly.
In the attached picture you can clearly see that the footprint of the tool head assembly is reduced by a large amount yes, the comparison is not quite fair - the V6 version uses a smaller part cooling fan Not only the over all difference in footprint size is a nice feature of the V6 tool head.
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