@dc42 the problem I have is that the estimated time is thrown way off when using PA with 800mm bowdens. Or does Simplify3D cater to that? I have been using PrusaSlicer for ages, but wonder if I should dust off my Simplify3D install.
/K
@dc42 the problem I have is that the estimated time is thrown way off when using PA with 800mm bowdens. Or does Simplify3D cater to that? I have been using PrusaSlicer for ages, but wonder if I should dust off my Simplify3D install.
/K
I have a e3d motion system and I want to write a daemon to try and guess when to warmup the next tool. So this has several factors I need to solve.
Is this at all possible or am I being crazy? I think we might need a tweak to store the layer-time for each layer in the model?
/Kegan
@dc42 I think I am just over thinking this, if I use G1 R2
I can zip back to the print position rapidly with only minor retraction.
prime.g
G91 ; relative pos
G1 Z3 F1000 ; raise Z
G90 ; back to absolute pos
M106 S0 ; fan off
M109 ; wait for temp
M42 P0 S1 ; turn servo on
M280 P0 S100 ; servo home 100 degrees
G4 P100 ; wait 1 second
; move near pebble wiper, two movements to come in from
; the right edge so any tail hangs over the far edge.
G0 X-35 Y160 F30000
G0 X-42 Y161 F24000
G0 X-39 Y153 F24000 ; move to pebble wiper purge spot
; make a pebble
G1 E1.5 F200 ; purge reduce from 5 to 3
G4 P200 ; wait 200ms
G1 E5 F300
G4 P200 ; wait 400ms;
G1 E10 F500 ; purge
G1 E5 F360 ; Pebble Purge
M106 S1 ; fan 100%, cool and harden the pebble
G1 E1 F240 ; Final Slow Pebble Purge
G4 P14000 ; Dwell for 12s, a bit long, need to tune down this.
; do a minor retraction
G92 E0 ; reset extrusion
G1 E-0.4 F1500 ; Retract a bit
; servo wack the pebble away
M280 P0 S0 ; whack!
G4 P250 ; Dwell for milliseconds
; zip over the brush
G0 X-35 Y123 F24000 ; move across brush
G0 X-39 Y200 F24000 ; back over the brush
G0 X-35 Y123 F24000 ; move across brush
G0 X-39 Y200 F24000 ; back over the brush
G0 X-35 Y200 F24000 ; back over the brush
G0 X-25 Y131 F24000 ; back over the brush
G0 X-40 Y131 F24000 ; back over the brush
G0 X-25 Y131 F24000 ; back over the brush
M106 R2 ; Cooling Fan Off
M280 P0 S100 ; servo home
M42 P0 S0 ; servo off
; restore Z before moving tool back
G91 ; relative pos
G1 Z-3 F1000 ; lower nozzle
G90 ; back to absolute pos
G29 S1 ; mesh levelling on
; return to position where toolchange was initiated from
G1 R2 X0 Y0 Z2 F50000 ; Move to saved position at lightning speed
G1 E0.4 F1500 ; Unretract
G92 E0 ; reset extrusion
@dc42 Does that mean I can use G10 and G11 in the script g-codes, while the job uses normal G1 E extrusion?
I am having a bit of a hard time understanding something that should be simple. I have a pebble wiper, that purges a pellet and whacks it with a servo after every tool grab. After the pebble is formed, I retract 4.8mm, before print resumes.
; prime.g
G92 E0 ; Reset Extrusion
G1 E-4.8 F1500 ; Retract
In my slicer settings, I am confused as to if the unretract will undo this retracted state, as in generated gcode, it looks like there is an additional retract after my tool is grabbed, and it undoes that retract obviously, but does the printer know about and undo the other 4.8mm retraction too?
; slicer code
; tool change
T1
G1 E-4.8 F2400
G1 X137.29 Y76.988 F21000
G1 Z.2
G1 E4.8 F2400
I am confused as to if the printer knows about that extra retract in prime.g, and does it undo that when extrusion starts again?
@dc42 Thanks for reply. Ok ill give up on the Titans then, I am thinking of moving my original Hemeras to be Bowden extruders, as they are too heavy for moving at reasonable speeds. I guess I have my answer then. TItans out, Rotos or something light for direct.
I am trying to wrap my head around the jerk setting for my e3d titans on my e3d motion system tool changer.
The default M566 was E2:2:2:2, but I am now tuning for pressure advance, but have no idea on the range to use. I set it to 300 initially, but over 350 I start to hear odd sounds from the extruded which Im just not used to, so no idea if they are good sounds or bad sounds.
For my massively long bowdens, I need a fairly high PA value, like 0.7. What is the "working" range for acceleration for a Titan with this much PA?
; E3D Revo Micro Hotend
M566 X400 Y400 Z8 C2 E2:2:2:2 ; Set maximum instantaneous speed changes (mm/min)
M203 X35000 Y35000 Z1200 C5000 E5000:5000:5000:5000 ; Set maximum speeds (mm/min)
M201 X6000 Y6000 Z400 C400 E2500:2500:2500:2500 ; Set accelerations (mm/s^2)