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Re: Rebuilding Industrial 3D Printer - 9 years ago
A hard thing you are going to have to figure out is how to control the extruder motor. It is a DC motor with encoder. All of the firmware options are stepper motor control. It's going to be hard to write your own if you are not a cs person. So find someone who can help you write that control into your firmware. I'd buy a cheap ramps board and some stepper drivers capable of 2 amps. The installby TFinleyosu - General
Re: Rebuilding Industrial 3D Printer - 9 years ago
With the arduino and a stepper motor board (SainSmart CNC Router Single 1 Axis 3.5A TB6560 Stepper Stepping Motor Driver Board) I was able to test movement of each stepper motor and get the steps per mm. I then went in a separate direction from the arduino with the Azteeg X3 that gave me full control of all components. I then uploaded Marlin firmware to the Azteeg, calibrated it and it works grby TFinleyosu - General
Thermistor wire? - 9 years ago
I bought a MK2B heated bed and can't figure out what specs of wire I should use for the thermistor. I believe it's a glass bead style 1 thermistor.by TFinleyosu - Reprappers
Purge and Wipe Station - 9 years ago
So the industrial 3D printer (original thread) that I'm rebuilding has a purge and wipe station and I need to make a decision if I'm going to use it or not. I'd like to, but to do so it sets some nozzle height restrictions because the wipe station is at a semi-fixed height. I think the printer used it every time it switched between the two printer head (support material and structure material).by TFinleyosu - General
Re: Which extruder setup ? - 9 years ago
QuoteAndrewBCN The challenge in getting a reliable direct drive extruder is very exactly that of torque. You have to rely on a proper drive gear (the MK7 and the MK8 gears are popular choices) and a good stepper motor driven at or near its maximum rated current, meaning it will also get quite hot. Greg's Wade's Geared Extruder has a sterling reputation because it avoids these issues. The 3D prinby TFinleyosu - General
Re: Which extruder setup ? - 9 years ago
QuoteGRAYWOLF QuoteTFinleyosu Do you guys know if direct drive designs have issues with slippage or resolution? I'm curious is a direct drive design with a NEMA 17 will have enough torque (Ebay Example) I need to customize the mount for my extruder and a direct drive would simplify the design considerably or I could find an off the shelf option. My instincts are to avoid 3D printed gears in thiby TFinleyosu - General
Re: Coordinate System Help - 9 years ago
Quote691175002 It doesn't really matter, but your X and Y are backwards according to standard CNC conventions: Note that the arrows in these pictures is movement of the cutting tool/extruder, so it applies in reverse to the table. Thats a good point. The back right area has a cleaning station at the home position, so I like that as the origin. That's why I chose my x and y axis as I did. Thaby TFinleyosu - General
Re: Which extruder setup ? - 9 years ago
Do you guys know if direct drive designs have issues with slippage or resolution? I'm curious is a direct drive design with a NEMA 17 will have enough torque (Ebay Example) I need to customize the mount for my extruder and a direct drive would simplify the design considerably or I could find an off the shelf option. My instincts are to avoid 3D printed gears in this area for reliabilty and accuby TFinleyosu - General
Re: Rebuilding Industrial 3D Printer - 9 years ago
Follow up... ^^ That was a filter with a circuit breaker, which I am using. I bought a 12V 30amp power supply that I connect to this circuit breaker, which works well. I am using the Azteeg X3 with the DRV8825 drivers and decided to power the stepper motors at 12V instead of worrying about trying to go 24v. I just got them running with pronterface and finally figured out the calibration. Theby TFinleyosu - General
Coordinate System Help - 9 years ago
Background: I'm in the early stages of rebuilding an existing industrial 3D printer, so I have a bit of reverse engineering ahead of me. (Original Thread Here) I'm trying to setup the polarity of my motor for my z-axis. I understand the right hand rule, however I am looking for confirmation that my logic is correct before moving forward. I'm using Marlin and Pronterface and my motors are calibraby TFinleyosu - General
Re: So, I took apart this Stratasys printer... looks like custom steppers - 10 years ago
Thanks!by TFinleyosu - Stepper Motors, Servo Motors, DC Motors
Re: Hot End Cooling with Heated Chamber - 10 years ago
The printer I have used a removable plastic bed that clipped into the platform I think the trick might have been that they always printed a layer of the support material down prior to the ABS.by TFinleyosu - General
Re: Hot End Cooling with Heated Chamber - 10 years ago
QuotePaul Wanamaker I like it. Thanks for sharing the link. Paul, What I found interesting is that the Stratasys printer did not use a heated bed. It just used a heated chamber at ~55°C and would not start printing until everything was up to temp. Have you ever tried using just the heated chamber and not the heated bed?by TFinleyosu - General
So, I took apart this Stratasys printer... looks like custom steppers - 10 years ago
I think they had custom steppers and I thought I'd ask here. Here is the thread: There are two different kinds of steppers used and I cannot get an exact datasheet. I emailed their support group, but I also wanted to throw it to you guys. Here are the two kinds: Lin Engineering: 5718M-24P-03RO Applied Motion: MN23-700-002 Any help would be appreciated...by TFinleyosu - Stepper Motors, Servo Motors, DC Motors
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
Actually, could I clarify one thing. The motor will try to pull 2.4 amps but the driver is only rated at 2.2 max. Will it actually only allow 2.2, or will it pull 2.4 and cause it to overheat (maybe miss steps???). Or will it only let 2.2 amps through and just cause the motor to have less holding power and maybe a little speed compromise.by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
Quotegeorge4657 Steppers work on magnetic force from coils of wire. If you feed 3.6 volts at 2.4 amps to the motor it would have full holding power. To step the motor you reverse the direction of current in the coils. At 3.6 volts this would take a long time so motor would be very slow. By using a higher voltage the current can be changed quicker and the motor can run much faster. The higher theby TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
Thank you for you help guys.. What board would you guys recommend for a 24V supply and 8825 drivers? It doesn't look like the smoothie uses 8825 drivers and I'm not sure how extensive the 24V mod is for the RAMPS board.by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
I just put a request into Lin Engineering for a data sheet for the motorby TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
QuoteVDX ... so the stated voltage won't fit - this seems to be common steppers, which should be happy with the normal 12V/1.5A-drivers too Somethings going on, but the previous system used a 24V power supply ... so that's weirdby TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
Could I just go with 3 of these controlled by my arduino to be safe? TB6560:by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
The resistance shows 1.5 ohmby TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
Thank you everyone for the suggestions and explanations. I have 2 Applied Motion stepper motors (MN23-700-002) and a Lin Enginering stepper motor (5718M-24P-03RO). I am waiting to get the specs from Applied Motion but the Lin Engineering motor is 24V and 2.43A. I think I need to identify the right stepper drivers if the DVR8825 is not an option.by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
I've read the different wikis but there always seem to be a limitation on one of the boards/shields. So I guess I don't know if it better to find a shield that can handle 24V or use a RAMPS shield with the standard 12V for most things and then route the 24V through the motor shields that are separate from the shield. Can someone please recommend some hardware?by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
I guess I'm confused because of the setup of the "shields" that transfer the source voltage to the drivers through the arduino.by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
What firmware do you use to control the external drivers? It is hard to configure?by TFinleyosu - General
Re: Hardware for 24V 2.5A Stepper Motors - 10 years ago
QuoteVDX ... have you according drivers for your steppers? I'm driving steppers with an Arduino, powered with 12V (internal 5V) while the drivers+steppers are powered with 325V from their own net-plug PSU ... I'm sorry, but I don't understand what you mean by according drivers. I don't know what at net plug PSU is. I'm thinking the arduino is consoling the driver almost like a solenoid andby TFinleyosu - General
Hardware for 24V 2.5A Stepper Motors - 10 years ago
I'm thoroughly confused and could use some guidance. I have a hardware setup that I'm going to repurpose. It is very nice and I don't want to swap out motors. There are 3 stepper motors for XYZ motion that are 24V and 2.5A. I have not built the stepper/extruder yet, but there will probably be only one. Can someone please help me spec out a control board that will give me the most options, controby TFinleyosu - General
Re: Hot End Cooling with Heated Chamber - 10 years ago
Took a look last night but no luck on part numbers on either of the fan or the tubing. I'll have to pull the fan to see if there is a part number on the back so I can see what voltage it is. I'll keep you posted.by TFinleyosu - General
Re: Hot End Cooling with Heated Chamber - 10 years ago
QuotePaul Wanamaker Right now I am only controlling the heat of the build plate, although I do have hardware thermostats on both the heated bed and in the chamber to protect against serious over temp. I do plan on adding a thermistor for the chamber.There are extra thermistor inputs on my Rumba (although I plan on replacing that board with a Smoothie). I do not know yet if my firmware (Repetier)by TFinleyosu - General
Re: Hot End Cooling with Heated Chamber - 10 years ago
Any chance you guys have a wiring diagram for a heated build chamber? I'm curious how its monitored and controlled? I'm new to this. EDIT: I guess I'm really curious on the requirements of the hardware to connect a thermistor and hard it would be to adjust a firware configuration to monitor and control the heater and fans.by TFinleyosu - General
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