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Re: inverted polar 3d printer - 1 year ago

I runned RRF with my config in SKR2. (I have 3 external TB6600 drivers connected via STEP/DIR mode and 3 classical EndStops) After first boot, from two red LEDs, I have left flashing and right on. I connected SKR to Pronterface and I only have some random movements in one of the motors. There is no response to any request. In parallel, I connect a TTF, but currently it is useless. I only nee

SKR2+RRF+POLAR - 1 year ago

Hello everybody, I'm making polar printer like this one: YouTube Firstly I tried Marlin, actually I'm trying RRF, but there is no way I can control my machine. I can't even get a correct connection. Can somebody help me with RRF? I can give my RRF config if somebody needs it. Its possible use ArduinoUno with CNCshield?

Re: inverted polar 3d printer - 1 year ago

It looks to me that the kinematics is identical to a normal polar printer, in which case the standard builds of RepRapFirmware can drive it.

Re: Edit Marlin for Polar Coordinates - 1 year ago

dekutree64, It is Marlin or RRF?? Do you khnow manipulate polar printer with SKR2 and RRF? I'm trying it but I can't give it.

Re: inverted polar 3d printer - 1 year ago

Do you have something? I'm trying same cinematics with SKR2 and RRF but there is no way to control it...

Searching for ppl with RRF programming experience. - 1 year ago

Hello everybody, I'm doing some type of polar printer and there is no way I can control it. It's about SKR.v2 with 3*nema23 ( Tb6600 drivers) where one of then is an angular moviment. I'm speaking about a custom cinematic. Actually I'm searching for somebody who can help me with it, I will reward for it. This project is so important for me, I hope someone can help me. Thanks

Re: inverted polar 3d printer - 1 year ago

... nothing to find here? --

inverted polar 3d printer - 1 year ago

. I want to make a 3d printer exactly like this but i couldn't find anything else on it, just this YouTube video. Can anyone help me to configure marlin to allow for this type of movement.

Edit Marlin for Polar Coordinates - 2 years ago

Hey all! I'm building a cantilevered 3d printer, similar to the one in the attached picture. However, I'm not sure how to adapt Marlin to account for this. I need rotation of the arm around the z axis, change of the length of the arm, and the linear motion along the z axis (up-down) shouldn't need any changes since I'll just be using threaded rods for that. Thanks!

Peculiar error - 2 years ago

Hi, all. Trying to get a polar printer set up. I run a g-code using a .cfg file with cartesian kinematics. keep everything the same, basically, when doing on .cfg with polar kinematics. Then I get the errors: stepcompress o=0 i=0 c=57 a=0: Invalid sequence Internal error on command:"G1" I've attached my gcode, my successful .cfg, my unsuccessful .cfg, and my unsuccessful .cfg's klippy.log. I'

Re: Donut shaped polar printer? - 2 years ago

Hello, I am working on a very similar project (polar printer with centered z-axis for architectural purpose), using RepRapFirmware on Duet Wifi board. I'd like to know if you have encountered any difficulties using the firmware with polar configuration during your project. Thanks, Yann-Situ

Re: Is this ringing? - What is causing this lines? - 2 years ago

What kind of printer? The inconsistent layers in the first photo are something I've always struggled with, and what made by far the biggest difference was changing from bowden to direct drive. Partial clogging may also be one cause, so putting a wiper on the filament between the spool and extruder is a good idea. The vertical lines in the second photo are strange though. The only place I've gott

Re: SCARA arm plotter / printer using Nema 23 stepper motors - 3 years ago

... I've wired some small PCB-insets into the Pololu-style sockets, which simply "exports" the pins for DIR, STEP, GND (and evantual ENABLE) to an external stepper driver ... was using common drivers for steppers up to NEMA-34 or 3-polar stepers from Precitec/Berger-Lahr with 325V DC voltage without any problems For "poor quality" with SCARA -- search for infos about "PARALLEL SCARA" - its much

Re: Dual-Polar Printer - 3 years ago

Dual-Polar Printer - 3 years ago

I recently built a Dual Polar Printer and since most info came from here I should post the results. It fit my purpose of a fun and compact printer that can also be used as a toolchanger, since the bed can be rotated 360deg around the Z axis and move to a difference tool. The almost static printhead (only slow movement in Z) allows for some heavy toolheads. I mounted a 5er diamond hotend with di

Re: Scara Firmware Setup Confusion - 4 years ago

Yeah, I do wish someone would write some documentation for this. The Marlin site says "Support for Cartesian, Delta, SCARA, and Core/H-Bot kinematics", and there are some config files here , but that seems to be the extent of the documentation. No explanation of what exactly is implemented or how to set it up. The original MPSCARA used a script to convert cartesian coordinates to polar coordinate

Re: re-use auto flywheels for a polar printer? - 4 years ago

Thanks for the input. I know that an experimental setup wouldn't be expected to have great accuracy compared to an off the shelf product. I like to discuss these ideas even though they will likely lead nowhere as it helps me to avoid making bad decisions.

Re: re-use auto flywheels for a polar printer? - 4 years ago

Flywheels are 1) made to move heavy mechanical loads without precision and 2) very heavy. Both can be problems for 3D printers. The lack of precision will have detrimental effect on print quality. Any time you put gears in the drive mechanism of a 3D printer, the quality of the gears will have a direct effect on the print quality attainable. High mass means high inertia which means controlling t

re-use auto flywheels for a polar printer? - 4 years ago

I was looking at this video of an experimental polar 3d printer and was struck by how similar the parts were to a flywheel from any internal combustion engine. I had an idea to mount a flywheel on a tapered bearing, then mount the starter cog on a stepper to rotate the flywheel. it might even be possible to use a second flywheel as in the video with another starter cog poking up through the cente

Re: Polar 3D printer design- Update - 4 years ago

Hi Everyone I have some good news that i managed to run the machine using Marlin R-360 firmware attached is the video, however i have a problem that the output is too much close the printed object however the problem that the machine does draw the straight line as arc and some corners are fillet, i did not activate the #define R_360 in the firmware because whenever i enable on X axis (R) is mov

Polar 3D printer design - 4 years ago

-- moved topic --

Re: 2 MOTOR 3D PRINTER. 2 MOTORS FOR 3 ACCESSES. - 4 years ago

Holly cow is this an old thread. I threw this out a few years ago. VDX is correct that the cost of an extra motor is so low as to negate any need for such a design. A much more interesting polar design can be seen here.

Polar 3D printer design - 4 years ago

Hi All i need a help as i build a Polar 3D printer which in the concept seems like R-360 that works on Marline R-360, however my design is a bit different as you see in the attached picture however i have face difficulties configuring the Marlin R-360 although i have experience of Marlin configuration. I need help and some guidance on what is required to get it configured just make it work as pr

Re: Forschungsprojekt Rotations-Speed-Druck - 5 years ago

... das und etliche andere. Nur hat der Initiator -wie er selbst schreibt- die Lust verloren. Wie etliche andere. Das Thema hatte 3Druck.com 2014 schon aufgegriffen. [3druck.com] Erinnere mich an ein Projekt, dass auf einer Messe in der Schweiz vorgeführt wurde. Dreh-Druckbett senkrecht stehend an der Wand und ein Robot-Arm führt Extruder / Hotend so, dass immer in der Horizontalen von oben na

Re: Rotary Printer (again and again) - 5 years ago

If you have a 32-bit controller board, have you considered using RepRepFirmware instead of Marlin? it supports polar kinematics as standard.

Rotary Printer (again and again) - 5 years ago

Hey there, I´m just the next nerd whos trying to build a rotary 3d-Printer like a record player. A rotating buildplate and a arm, who also describes a circle wich crosses exactly threw the center of the buildplate. I created some basic hardware wich is good enough to get the most importat part on track: the Firmware. I realized there has bee several projects talking about printers like this but n

Re: Drehachse - 5 years ago

... wenn du statt eines zusätzlichen Extruders eine Drehachse ansteuern willst, dann schau dir mal die Konfigurationen der Polar-Printer - da werden statt XY-Koordinaten Winkel-Koordinaten ausgegeben, die vorher von Kartesisch (XYZ) nach Polar umgerechnet werden müssen -- Z bleibt dabei meist gleich ...

Re: Polar 3D Printer - 5 years ago

I don't know it. Can you help me?

Re: Polar 3D Printer - 5 years ago

... the firnware converts cartesian XYZ-coordinates into polar or delta motion

Re: Polar 3D Printer - 5 years ago

All softwares only support Cartesian coordinates, how can convert gcode to Polar coordinates?