Another source of error for me has been not having the belts parallel to the frame, caused by the toothed gears having slipped on the motor spindles. Measure belt-to-frame at each carriage and at the bottom just above the motor spindle, get them the same.
@deckingman said in PA increasing print time ++:
if the pressure at the nozzle is lower when PA is applied, then the filament will be less likely to ooze during subsequent travel moves, and so less retraction may be required.
Thanks. I was not aware of this dependency.
Following on from my last post the stepper motors I can print up to 10mm3/sec with are the standard Ormerod motors which have a rated current of 1.33A, 2.1Ohm resistance, 2.5mH inductance and a holding torque of 2.6 kg.cm.
Interestingly the shorter motor on the E3D is almost identical spec but with more torque. Rated current of 1.33A, 2.1Ohm resistance, 2.5mH inductance and a holding torque of 3.2 kg.cm.
This indicates that my previous issues were Titan or volumetric rate related.
ok thank you so now im having a problem with my bltouch it seems to stutter when i probe the bed as if there is a voltage drop on the magnet in it or something so it gives me an error Error: Z probe readings not consistent
Ambient temperature around a printer can be up to 40C under some conditions, so RRF treats temperatures below 40C as cold.
You could wait for temperature to fall to 40.1 then use G4 to wait an additional fixed period .
@blt3dp said in Max Instantaneous Speed Change Relating to Extruder:
I did see that article previously, that you were using Bondtech BMGs. If I recall, you were using E3D Titans at one point. Similar results as far as speed and settings?
Yes. Both use the same gearing so the steps per mm are almost the identical. In my particular usage case with mixing hot ends, where I often retract and un-retract the same piece of filament, the Bondtech is less prone to grinding down the filament.
Thank you both ! I get the idea now how very sensitive they are. I order the Precision Piezo V2.75 PCB with undrilled piezo and an Andromeda and design my hotend mounting for that. The mount is a 3 point mount with 2 bolts at the top and one at the bottom. The Andromeda should be perfect then to be attached to the bottom. I do some testing then how much flex or how little flex I actually need.
I appreciate the feedback.
@sinned6915 said in GCode Tuning:
use the KISS <TUNINGVAL> procedure to vary the Hertz over the height or measure the peaks and speeds?
I suggest you measure the peaks and speed to get an estimate, then vary the Hz from perhaps 30% below to 30% above that value.
@phaedrux said in Under extrusion after Retraction?:
Are you using pressure advance?
I do have 'M572 D0 S0.20', picked the value arbitrarily and am not sure it makes a difference. I need to find time understanding and fine tuning it.
@crchisholm See if your router has MAC address reservations. Once you find your duet in your dchp client list you should be able see the mac there and go in and reserve an IP for that MAC. Helpful hint- make it an IP that's well out of range of normal assignment. For instance my router likes to assign 192.168.0.1XX addresses starting at 100. With the extra AP you get a lot less weirdness if you grab 192.168.0.200 or something for your Duet. If this doesn't work you might still have a DHCP server turned on with one of your AP.
@cdl1701yahoo-com said in Core XY Homing position, what am I missing:
OMG, it is always something so simple, actually I didn't think it mattered which motor went to which connector for the X & Y on a Core XY machine but that fixed it. Now I know.
Thanks again guys.
Yes, it's a bit confusing because on a CoreXY, both motors contribute to pure X or pure Y moves so they don't actually have X and Y motors. They are often referred to as Alpha and Beta. I believe on the next generation Duet boards, the stepper drivers will simply be marked numerically, rather then X,Y, Z etc...