CoreXY Build
Monday, November 1, 2021
Friday, October 29, 2021
SolidCore CoreXY Updates
SolidCore CoreXY Updates
https://t.co/BaBMARnzel pic.twitter.com/B3Bq7slGuz
— 3D Distributed #MRRF2020 (@3ddistributed) October 29, 2021
Triple Z-Axis Motion & 3-Point Bed Leveling
Thursday, October 7, 2021
Duet 3 Wiring Guide
Duet 3 Wiring Guide
Duet Wiring Instructions
This is a guide on how to wire the Duet board for your printer. Once you have mounted the Duet 3 and 24v power supply to your 3d printer you can began to wire the Duet 3 Mainboard. I’m using the Duet 3 in standalone mode so I won’t be covering the Raspberry Pi.Power Supply
Connect the Black wire into the “L” terminal Connect the White wire into the “N” terminal Connect the Green wire into the Ground terminal The wire colors meet US color standards for AC. Colors. The positive wire from the power supply goes to the terminal marked +. Do not solder the power supply wires because the heat generated from the current can melt the solder causing the connection to become loose. Duet3d recommends to use bootlace ferrules on the end of the wires and to re-tighten the terminal block screws after doing the first few prints, because heat generated by the high can cause them to creep and become loose.
Connect the terminal block labelled POWER IN to your power supply Make sure to get the polarity right and the wires you use are of proper gauge size to carry the current to supply the bed heater and electronics.
Letters or numbers to designate coils.
The standard is A+,A-,B+,B- (or B-.B+,A-,A+) on the labelling of Duet3d boards.
Stepper Motor Wire Color And Coil Pairs
Stepper Motor Color Coding of Wires & Coil Pairs
For any stepper motor to be wired up properly, we’ll need to determine which wires are “pairs” or connected to the ends of each coil. These are usually referred to as coil “A” and coil “B”. The exact order of the pairs Black/Green or Green/Black of pins does not matter, but keeping the pairs together on the left, and red/blue with each other on the right is important.
To get the motor moving properly and in the right direction stepper motors must be wired up properly. It does matter which coil is which and what the polarity of the coils. While there is no universal standard for color code for stepper motors, many stepper motor manufactures keep their stepper wires in order with the motor coil pairs
Black/Green is a motor coil
Red/Blue is a motor coil
Although the wiring colors can not be trusted the order of wires is usually as follows:
Wiring Option 1
1A – green
1B – black
2A – blue
2B – red
Wiring Option 2
A + black
A – green
B + red
B – blue
Sometimes Option
A + black (red)
A – green (green)
B + red (yellow)
B – blue (blue)
Determine which wires are “pairs” or connected to the ends of each coil. The motor wire pairs are known as coil “A” and coil “B”. The exact order of the pairs does not matter. Only keeping the pairs together is important
On the left
red/blue with each other
on the right
black/green with each other
Identifying The Stepper Motor Phases – Coil Pairs
If the color code and motor wiring isn’t allowing motor movement, ignore the wire colors and look at the wire positions instead. Use a multimeter to test to see if continuity in the wiring of the stepper – both motors behaved the same in that there was zero resistance between blue and red , zero resistance green and black.
Here are two ways you can pair the stepper motor wires into phases:
Using a multimeter, check for resistance. There should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases.
With the motor wires not connected to anything, spin the motor shaft. Short two of the wires together, then spin the shaft again. If it is much harder to spin than before, those two wires belong to the same phase. Otherwise, try again with a different pair of wires shorted together.
Use a multimeter to find the coils and wire appropriately. ohm test the stepper motors. A wire pair should have a slight resistance. If the resistance values are right. The XYZ motors are rated 4.2V 1.5A 2.8 Ohm +/-10%. The extruder motor is rated 2.6V 1A 2.6 Ohm +/-10%.
Check for resistance. There should be a few ohms resistance between two wires that belong to the same phase, and no continuity between wires that belong to different phases.
With the motor wires NOT connected, spin the motor shaft. Short two of the wires together, then spin the shaft again. If it is much harder to spin than before, those two wires belong to the same phase. Otherwise, try again with a different pair of wires shorted together.
Bipolar Motors
Bipolar motors have two separate coils:
Red/Green is one coil
Blue/Yellow is the other coil.
Use a multimeter to find the coils and wire appropriately. ohm test the stepper motors. A wire pair should have a slight resistance. If the resistance values are right. The XYZ motors are rated 4.2V 1.5A 2.8 Ohm +/-10%. The extruder motor is rated 2.6V 1A 2.6 Ohm +/-10%.
Also See
Wednesday, October 6, 2021
Best CoreXY 3D Printers 2021
Best CoreXY 3D Printers 2021
Choosing a corexy printer design can be a challenge with so many design options available. Every CoreXY design has different design goals for different needs as well as different compromises. Whether you’re building a new printer or just in need of a new 3d printer, there are many options to choose from with each of them having their own unique advantages and disadvantages.
Size vs Speed
Cost vs Accuracy
Size vs Volume
Depending on your application there are many options to choose from.
DIY 3D Printer Kits
Design and Build Plans
Plug and Play- Ready to Print
New Projects Soon To Be Released
All Metal Parts
WHAT IS THE BEST COREXY DESIGN?
COREXY DIY DESIGNS & KITS
- Jubilee
- SecKit
- Voron 3D Printer
- BLV MGN Cube
- Railcore
- HyperCube
- E3D ToolChanger
- VzBot
- CrazyCreatorCube
- HeVort DIY 3D Printer
- SolidCore CoreXY
HeVort DIY 3D Printer
The HeVort changes the way 3d printers level the bed. Although non-planar printing is not really widely implemented yet, we may see more non-planar printing in the future. This would allow you to print a part in vertical mode and add another component at an angle without need of support material or other mechanical aids.
HeVort Z-Axis Design
JUBILEE 3D PRINTER
- Modular Platform
- ToolChanger
- Customizable
- Awesome
The Jubilee toolchanging platform was quick to adopted as manufactures began to offer all-metal upgrades for the platform. Mandala Rose Works offers a range of lightweight machined parts. The Tool changer platform has a big community on Discord.
Rat-Rig V-Core 3
CrazyCreatorCube
- Build volume: 350x330x400mm
- ToolChanger Mechanism: Magnetic
- Open-Source
- Electronics: Duet2 with Duex5 Expansion Board
Voron 2.4
- Build volume: Scalable
- Extruder: AfterBurner
- Enclosure: Open or Enclosed
- Moving Gantry
- Electronics: Duet3D / Klipper
Voron 2.4 Specs
Light-Weight Carriage DesignHigh speed prints with fewer defects
Better at printing tall thin things
Great community support on Reddit
Less moving mass of the extruder carriage
BlackBox Multitool 3D Printer
Blackbox Specs
- Build Volume: 300 mm x 300 mm x 275 mm
- Full enclosure
- Direct drive toolchanger
- Water-cooled toolheads
- Belted Z-axis
- Automated leveling and calibration
- Price: $2,900
RailCore II 3D Printer
RailCore II 300ZL
The original Railcore printer is no longer available due to the updated 300 ZL and ZLT version. But here’s the details:- Linear Rails XYZ Axis
- 300mm x 300mm x 330mm Build Area
- ZLT is 300m x 300mm x 600mm Build Area
- Auto Leveling
- Hotend: E3D V6 or Mosquito
- 0.9 Degree Steppers
SecKit 3D Printer
SolidCore CoreXY
Related Content
Tuesday, October 5, 2021
Stepper Motor Holding Torque
Stepper Motor Holding Torque
This is the maximum torque that the motor can provide with both windings energized at full current before it starts jumping steps. The holding torque with one winding energized at the rated current is about 1/sqrt(2) times that.
Torque
The torque is proportional to current (except at very low currents), so for example if you set the drivers to 85% of the motor rated current, then the maximum torque will be 85% * 0.707 = 60% of the specified holding torque.
Motor Windings
Torque is produced when the rotor angle is different from the ideal angle that corresponds to the current in its windings. When a stepper motor is accelerating, it has to produce torque to overcome its own rotor inertia and the mass of the load it is driving. In order to produce this torque, the rotor angle must lag the ideal angle. In turn, the load will lag the position commanded by the firmware.
Microstepping
Microstepping can reduce torque. What this really means is that when the lag angle is assumed to be equal to the angle corresponding to one microstep (because you want the position to be accurate to within one microstep), higher microstepping implies a smaller lag angle, hence lower torque. The torque per unit lag angle (which is what really matters) does not reduce with increased microstepping. To put it another way, sending the motor a single 1/16 microstep results in exactly the same phase currents (and therefore the same forces) as sending it two 1/32 microsteps, or four 1/64 microsteps, and so on.
Also See
Triple Z Setup
SolidCore CoreXY - Triple Z Setup
Bed Leveling
Firmware
- Specify at least 3 points using the G30 command and after.
- Last one you need to add the S Parameter. Then it will level automatically
- Heat up build plate
- Click the “Bed Leveling” button or macro on the Duet Interface.
SolidCore Triple z Mechanism
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