Could do with some more info but if your tools have individual heaters, then that's generally caused by having to wait for each tool to heat from it's standby to it's active temperature. If that's the case, you can make it instant by setting the active and standby temperatures to the same values for all tools. The downside of course is that you may get some ooze from tools which are not in use.
M501 in config, I'm changing the G31 in the override.
or I do the G31 in console and then M500.
and then I check with G31 T1
I've just edited my previous post, I guess I'll end-up adding the baby steps with M290 in my config until someone comes up with a way to help me diagnostic/solve this issue.
The probe offset given in G31, and the tool offsets given in G10, and the axis limits in M208 are relative to the print head reference point (HRP). You can choose the HRP to be wherever you like. On a single-nozzle printer, it would normally be the location of the nozzle. On my dual-nozzle printer, I have chosen it to be midway between the two nozzles.
I'm glad it's working for you. How well does it correct the level? You can check this by running it a second time. Ideally the adjustments will be zero the second time. In practice, they won't be, but they should be smaller.
I generally run it twice just to make sure. The first time I found out that my lead screws were backwards in the config file. Causing it to adjust the first time the opposite, which made it more out of alignment. Might want to add something to the wiki about that.
Once I got that setup correctly, it would fix within 0.02mm of level, as reported by BLTouch. After doing the bed leveling, I did a mesh bed compensation, and it looked way better than what I was able to get by hand.
To put it simply, I actually placed an order for a Duet X5, another stepper, and lead screw setup to actually convert my whole bed to a 3 lead screw system, without using belts.
The trade-off depends on your printing speed. The theoretical value is:
Equivalent retraction = pressure advance * filament speed
Where filament speed is approximately printing speed * extrusion width * layer height / filament cross sectional area.
turned out was my step setting for E motor, the filament retraction as well as my stretch problem, instead of just retracting few mm it was retracting a foot, now with right setting just backing off pressure at end of print like sopose too, thank you everyone for replying to my petty problems but is my first week in the 3d printing world.
im using RepRapFirmware Configuration Tool, and had z endstop limit switch setting on top of page and not the z probe and thought that would cancel out z probe settings on bottom, but there was these default settings in switch colum:
Trigger height at Z axis: 2.5mm
mmTrigger height on bed: 2.5mm
mmTrigger value: 600mm
A switch is used to determine the distance between nozzle and bed
i changed all settings to 0
and now works perfect
What are the consequences of performing the achievable M303 H1 S230 command, and occasionally running the hot end up to, say, 250C? Normally I only go up to 230C for ABS, but I may want to go higher now and then.
It's likely to be a consequence of either the finite resolution of the stepper motor, or quantisation applied by either the slicer or the CAD program that generated the STL file when processing curves. It's unlikely that the stepper motors will respond to individual 1/64 microsteps.
If it is due to finite resolution of the stepper motors, then increasing the motor current may help, and changing to 0.9deg motors (which will probably require a reduction to 32x microstepping) will help.
If it's due to quantisation in the CAD program, there is probably a setting you can adjust if you have the original CAD model.
What is the specification of your motors, what power supply voltage are you using, and what are your steps/mm?
Have you gone through the calculation at https://duet3d.com/wiki/Choosing_stepper_motors#How_to_work_out_the_power_supply_voltage_you_need to see whether you can reach your desired speed without the back emf of the motor being larger than the power supply voltage? You will obviously need to calculate the revs per second allowing for your 10:1 gearboxes.
There is no maximum speed embedded in the firmware.