This print is useful for setting the X-Y offset of additive tool, which we will be doing below.
Bed adhesion is a concern with most materials. Normally we would use an adhesion layer (print a layer of TPU) to help a rigid material adhere to the bed, but that would be a multi-material print, adding complexity we do not want here. We will print this with Ninjatek Cheetah, a medium-durometer TPU that prints easily and adheres well to the Kapton bed liner.
- T4 (nearly all H-Series machines have a print head located at T4)
- Nozzle diameter: 0.4mm (Instructions to change nozzle)
- Loaded with Ninjatek Cheetah
- Bed surface: Kapton, cleaned thoroughly with Acetone
Note: If your offsets seem to be inconsistent, we recomend trying a more solid material such as the Armadilo TPU from Ninjatek.
Use the .factory file attached below, or if you already have settings that you like, download the .STL and bring into Simplify3D. Make sure to center the part at X=0, Y=0. This is important because we need the center of the cylinder to be at what the machine THINKS is X=0, Y=0 for Tool 4. Later, we will probe the cylinder center and any deviation from 0,0 will correspond to the X, Y offset for Tool 4.
Here are some key settings:
- Extrusion multiplier: 1.1 (this is more than is really needed, but we want a solid part since we'll be probing it)
- Extrusion width: 0.44
- Retraction: 6mm at 60mm/s
- Layer height: 0.2mm
- Outlines: 2
- Choose start point...: 20, 20 (any 45° angle will work - we want to keep seams away from the probing locations, which will be along the X axis [0 and 180°] and Y axis [90 and 270°])
- Use a skirt if you do not have a cleaning station installed
- Between 225 and 235C
- Additional terminal commands...:
"C:\Program Files (x86)\Diabase Engineering LLC\PostProcess.exe" "[output_filepath]"
- This will auto-run the Wizard after you save the Gcode file
- 40mm/s is a good starting point
This will result in the following toolpath:
And it will open the Wizard automatically if you included that script (otherwise, simply open the Wizard manually). The Wizard won't do much to the file in this case, but it is useful to become familiar with the screens. Here are some key settings:
- First screen
- Configure manually (or if it detects your machine, you can select it)
- Second screen
- Tool 4 is "Nozzle"
- Check "Auto-Clean" for Tool 4
- Standby temperature and Preheating Time are not important here, since there are no mid-print toolchanges
- Third screen
- If you opened the Wizard manually, here is where you would load "G-code File for Additive Processing"
- When run automatically from S3D, this field will be pre-populated
- Fourth screen
- No changes
- Fifth screen
- Save toolpath (or upload directly to your machine if it was selected on the First screen. CalCyl.g attached below is the file as run through the Wizard.
Open the Gcode file and check the first few lines, which should look like this:
G10 P4 R235 S235
; layer 1, Z = 0.160
; feature inner perimeter
G1 Z0.160 F3000
M98 P"tprime4.g" ; tool change
G1 X3.181 Y3.026 F30000
G1 Z0.160 F1512
G1 E10.00 F6000
G1 X2.974 Y3.230 E0.0093 F1512
G1 X2.754 Y3.419 E0.0093
G10 P4 is setting the active and standby temperature of Tool 4, which is good. Make sure the S### is the print temperature you want. G1 Z0.160... is the first layer starting height, which is 80% of the layer height, also good.
Prepare the Machine
Home the machine and select T4. If this is your first time printing with the H-Series, do a couple sanity checks. Jog T4 down to the bed (slowly as you get close) to make sure the nozzle is barely in contact with the bed at Z=0. If not, you will need to adjust the Tool Offset.
Next, heat up the tool and extrude filament to make sure that is working properly.
Now let's send the file to the printer (unless you already did from the Wizard), by hitting "Upload and Print" in the upper-right corner or G-Code Files -> Upload G-Code File.
That is that. First print done. Now if you want to set the X-Y offset for Tool 4, continue reading:
Pull up the Probe (click Probe) and jog the machine so the probe is inside the cylinder.
On the Offsets page, click "Find center of cavity". This will move to the left until it hits a wall, then move to the right until it hits a wall, then move to the point between those two strikes. It cycles through this twice each for X and Y. When it returns to the cylinder center, click "Set X-Y" in the Tool 4 row:
Sanity check: Make sure after clicking "Set X-Y", the relevant values are updated. The X and Y values in the offets table should match the current machine position.
The next tutorial will do exactly the same thing, but with an adhesion layer (so a 2-material print).