I do not use Azteeg. Typically the max connectors are only used with delta printers. But you can use also the min connectors but make sure configuration and possibly also the pin files are modified acordingly. The 3 pins are typically GND, Signal, Vcc. You use GND and Signal with micro-switches.The Signal should have an internal pull up. If it is not there they you would need to add with using thby hercek - Delta Machines
@glt3dp: Notice that the print head must decelerate to s stop and accelerate to the target speed at every direction change. Imagine you are printing hexagonal infill or you are printing an infil between two wall which are only 6 mm apart. Your print head has 3 mm to accelerate and 3 mm to decelerate when printing infill. With your acceleration of 3000 mm/s² it will be able to accelerate to the maby hercek - Delta Machines
Plastic joints are probably stiff enough. Notice that the forces on the diagonal rod are almost entirely in the direction of the long diagonal rod axe. The only forces trying to bend a ball joint to a side are coming from the friction between the ball and its sleeve and the inertia (acceleration/deceleration) forces from the diagonal rod itself (its weight). These are very small. Magnetic jointsby hercek - Delta Machines
@Protoprinter: You can consider these too: I do not use them myself. I use plastic MP-Jet joints. @blt3dp: It all depends what kind of accelerations you want your printer to handle and whether you mind the extruder disconnecting in the case of a crash. What accelerations and print speeds do you use?by hercek - Delta Machines
Thanks for info. 285 °C is quite high for ABS but probably needed for extruder to work well at high speed. Did you notice any ABS thermal degradation ... maybe when not printing for a while and having the hotend heated?by hercek - Delta Machines
Maybe because I should not say planes but lines going between two diagonal rods going to the same tower. A forum user explained it here maybe a year ago? Try to search his post. It may have been the same person who created this page. I think he was the first one to introduce TES.by hercek - Delta Machines
@ldc60: 20° between diagonal rod and the heat bed when the effector is furthest from the corresponding tower. Only these rules come to my mind when deciding effector (platform) radius: The bigger it is the more horizontal space is wasted. Bigger platform allows bigger diagonal rod separation which minimizes bad consequences of the errors in diagonal rod length and ball joint positions. Put diagoby hercek - Delta Machines
If you modify the rods then make sure they have equal length. Make them equal as precisely as possible. I'm not aware of a 3dprinter calibration which can fix errors from rods (connected to the same carriage) having a different length.by hercek - Delta Machines
QuoteOhmarinus Is there some kind of fixed length that the diagonal arms need to have? Rule of thumb is that a diagonal rod should have angle of 20° or slightly more when the hotend is most far away from a tower. Don't bother with it. It is not a big deal. Consequences of longer arms are: numerical calibration will be slightly less stable (it will have harder time to converge to the proper resultby hercek - Delta Machines
Looks like some Kossel version with RAMPS electronics. Diagonal arms seem too long. Belts too long as well. It will have serious ringing with high accelerations (1 G or more). Make sure there is no play in it and that the frame is sturdy. Calibrate it numerically e.g. using these: firmware reporting tower positions at a probe point calibration notebook It will work well enough after callibrationby hercek - Delta Machines
You can use this to calibrate 8 bit board well: Well, you can use a different firmware but the firmware must report delta (tower) coordinates at a probing point. Your RAMPS shield will not work with Arduino Due. You would need to replace both Arduino and the shield. An integrated solution may be cheaper then.by hercek - Delta Machines
You can try Repetier too. And there may be other firmwares. I used Marlin in the far past and it worked too. No LCD. I did not use SD card.by hercek - Delta Machines
It may be because of arduino 2560 being rather slow for a delta printer. You may have some other problems as well. But you can run a delta printer with 8 bit board. You just need to be more careful about not wasting MCU time with crap like e.g. way too high segments per second or high LCD refresh rate.by hercek - Delta Machines
My data point with 8 bit electronics. You can print 120 mm/s, 9000 mm/s², 250 mm/s non-printing moves. Use 80 segments per second, Repetier firmware. No LCD. The printer is "small" (dimensions below 65535 microsteps). I do not know whether adding LCD will force you to lower speed and segments per second. But you can go down to 40 mm/s and segments per second of only about 30. I do not have any eby hercek - Delta Machines
No, I do not. It should not be needed since it is brass on plastics.by hercek - Delta Machines
You want spreadcycle mode with the right amount of fast decay phase. I do not know the stepper drivers to advice you more. Your most likely problem is that your fast decay phase is too short or you have mismatched belts with pulleys. Maybe somebody who uses TMC can help you more. Otherwise you need to find the magic layer height as described in this thread.by hercek - Delta Machines
What stepper drivers do you have? Are then in fast decay mode?by hercek - Delta Machines
Acceleration seems to be very low. Notice how slowly infill is printed. There is no long enough line to get anywhere near 1 m/s printing. Actually it looks like infill is printed barely about 20 cm/s on average. Probably less. Situation would be much worse with e.g. hexagonal infill where direction is changed more often. I also doubt that the walls are printed at 1 m/s. Look at it this way. If hby hercek - Delta Machines
@leadinglights: add your first picture) It depends on the weights and how much elastic the "rest of device" is. And specially what is the maximum speed when motor pulling "rest of device" stops accelerating. It still can reconnect in general. It just may be less likely to happen. add your second picture) No real opinion on it without building a simulation.by hercek - Delta Machines
@minim Thanks. Yes, you will have other problems with bigger impact at 1 G accelerations. Most likely your belts will be too springy/elastic or stepper motors will have small holding torque at the microstep used. The prints will have serious ringing on the corners because of that. Anyway you can find out at what accelerations your joints start to "rattle" if you increase acceleration and speed sby hercek - Delta Machines
Attractive force between magnet and iron drops with distance between them quite quickly. It is similar to the force between two magnets: That does not mean that your magnetic joints will not have any play at high accelerations! They can temporarily disconnect and reconnect again without staying disconnected. In a sense they can have bigger play than rod end when your accelerations are high enouby hercek - Delta Machines
Quoteminim I'll try magnetic joints I guess Cool, post weights and what accelerations can it withstand!by hercek - Delta Machines
If your parts are narrow like this: Then you may have just a simple skipped step on one or more towers. The XY shift is so small that you may not notice that there is also Z shift.Try to break those parts. Are they breaking much more easily at the location of the the shift? If yes then you probably have also Z shift which you re not noticing i.e. it can be a skipped step.by hercek - Delta Machines
Quoteleadinglights Viewing those two points, surely there would be a better compromise than a 5cm drum? You can go with smaller drum but there is a limit at the minimum drum diameter of at least abut 2.5 - 3 cm. That is because you cannot bend Ø 1.5 mm steel cable too much. It would break too soon. And to achieve enough torque from the best Nema 17 motors one can buy you need to use low microstepby hercek - Delta Machines
Quotedc42 Good magnetic joints work for high speed printing too. My delta using Haydn's mag joints + Duet3D Smart Effector + E3Dv6 hot end will lift more than 1.5kg without disconnecting. The mass of the effector and hot end is about 400g. So I could push it to more than 4G without it disconnecting. If you get some time, then print right angle corners at 2 G and about 120 mm/s to show us what kinby hercek - Delta Machines
OK; there is not any argument against "delta looking cool"! If you want to play with the steel cable you can try this: drum diameter 5 cm (big drum is important to have small number of turn of the cable on the drum; you need small number of turns to limit the errors from cable not going straightt up - horizontal cable position on the drum changes depending on carriage position; you also cannotby hercek - Delta Machines
5 mm retract length for a long bowden printer is about right Your retraction speed seems low at 50 mm/s. I use 300 mm/s. My extruder acceleration is 7000 mm/s². But this all depends on what kind of extruder you have.by hercek - Delta Machines
If you can find a thin (e.g. Ø 10 mm or smaller), long (at least 70 cm) screw with very high pitch (preferably around 5 mm or even higher) then it may be doable with ball screw or lead screw. The problem with screws is that to print quickly you need to spin them up quite a bit if they have small pitch and that kills your maximum acceleration. You will also hit maximum stepper motor RPM with smallby hercek - Delta Machines
OK, that uses GT2 glass core belts and magnetic joints. Can you post pictures of ringing with information about the used acceleration and speed? Preferably something at printing movement speeds of at least 80 mm/s (preferably around 120 mm/s or higher) and accelerations of let's say 0.8 G and 1.6 G. My point is not that you cannot print quickly at all. My point is that ringing will be bad with qby hercek - Delta Machines
My recomendation is to build a cartesian printer. The point is that you will find most information about printers using magnetic joints or 6 mm wide glass core belts (*) and those parts are not suitable for a quick printer. A quick printer needs also high acceleration to print quickly and most people here seem to use accelerations only around 0.5 G to get nice prints without ringing. (*) Glass cby hercek - Delta Machines