@theruleslawyer said in Overhangs:
@adrian52 When you set a minimum layer time does it slow the print to meet that layer time or does it just sit there for 10 seconds doing nothing?
Cura has a setting to lift the nozzle if the minimum time is set higher than the minimum print speed would allow. It's the only slicer I know of that will do that.
I would separate the 48V device completely from the Duet to avoid any damage. If it's a laser, one has to control the current with a separate laser driver anyway to limit the current to avoid damaging the laser. To turn on/off or other control, I would use one of the communication protocols and lines to the Duet. To be sure, an optocoupler can be used.
@yogi said in E1 and E0 lock up stepper:
I run a single extruder, generally E0. I swapped in a new extruder stepper and now when I send any extrusion signal the stepper just locks up until I power off the machine.
Is the hot end at operating temperature? If you try to extrude with the hot end cold, then the motor will be energised but extrusion will be prevented, and you should get a "Tool N was not driven because its temperature is too low" message. You can use M302 to enable cold extrusion while you are running tests.
Here are two likely solutions:
If you are using firmware 2.02, upgrade to 2.03beta3. The difference is that 2.02 doesn't apply tool offsets in the tpost file. Also, in tpost3.g, do a small X or Y move near the start, which should cause the Z coordinate to be corrected for tool offset at the same time.
In tpost3.g use G91 then G1 Z5 (for example) to raise the head 5mm. The head position will be restored automatically before it resumes the print.
@systemsguy said in Retracting and Unretracting with G10/G11:
@dc42 Actually - if I've dropped the tool, but not picked up a new one and issue a G11, what would happen?
Good question! You might get a "Attempt to extrude with no tool selected" message. If so, I can fix that.
@jojo said in Heater Temperature exceeded:
Damn u are right! I just asked the seller to check if it was the right Hotendkit they sent me....and its a 12V, not the 24V i ordered.
Is it possible to use this Hotend with 24V power or did i have to replace it?
It's dangerous to run a 12V heater on 24V power. If that hot end uses a heater cartridge, you can replace it with a 24V cartridge.
@dc42 said in Tool switching inconsistancy:
Are you sure that none of the movements you are seeing are in the GCode generated by your slicer?
I was until I just checked a the gcode file again. Looks like the slicer is still putting in the retraction and extrudes for the tool switch (even though I have the figures blanked out now - previously was using the slicer to handle the tool changes).
Looks like the double retract and tool change made it look like it wasn't doing the purge before the wipe and the slicer then extruding to cancel the retraction is what I was mistaking for the purge.
I had exactly the same issue on my Leadshine ES-D508. I was using the Duet Expansion Breakout Board for my drivers. And I also noticed the layer shifting becoming less as I increase the micro step, which makes sense, the more distance a single micro step takes, the more layer shift it would cause if it's not recognized by the driver or if it stepped to the wrong direction.
I was force to use the integrated stepper drivers but would love to get the external ones working some day.
@zapta said in G-Code confusion:
@dennishall said in G-Code confusion:
M208 X274 Y292 Z316 S0 ; maxima
I think that max X should be 220 (?)
The way I think of it, these are the allowed travel min/max, regardless of printing area. With this interpretation, you don't want X to go beyond 220 (?), of whatever the mechanical limit on your printer.
Yes you're totally right. I didn't look closely enough at the picture.
@gnydick said in Babystepping - confusion..:
@phaedrux homing doesn't clear baby-steps. Only if your homing script has that added.
Of course, you're right. Sorry for adding to the confusion.
Here's the source of my confusion:
In RepRapFirmware 1.19 and earlier, the babystepping offset is reset to zero when the printer is homed or the bed is probed. In RepRapFirmware 1.21 and later, homing and bed probing don't reset babystepping, but you can reset it explicitly using M290 R0 S0.
@lakko I went back and looked. The extruded amounts in the lower cells in column H are to be entered based on the extruded amounts after applying non linear extrusion. It is only there to see how far off the results are and to give me a compensation in steps that will get me close to an average of 100% since there isn't a "C" (offset) value that can be entered. Yes, the formula looks correct based on the data entered. Give it a go and run the test again then enter those values in column H.
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