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Hi Kimon,
I don't have an ormerod 2 but I would imagine that the procedure to convert to 2 nozzle would be as described in dc42's documentation which I would highly recommend.
My machine's conversion is slightly different to dc42's in that I use the original width of heat sink, which I had made, I have also done away with the nozzle mount and have a nozzle mount incorporated into the x-carriage.
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appjaws1
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Ormerod
Quotedc42
I updated the dual head conversion instructions recently to cover swapping the head 2 and bed thermistors over, as an alternative to modifying the boards. Thanks to Paul (appjaws1) for trying it out.
I've noticed that since changing the second head and bed thermistors, the main hot end fan is not switching off when the temperatures are cooling, in fact the fan comes on at switch on and
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appjaws1
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Ormerod
Quoteormerod168
I don't quite agree - Simplify3d to gap fill better (on this model at least) than I was able to achieve with Cura and Slic3r, had to set extrusion width to 0.45 to get it just right, this is tiny stuff! - tip of leg is 1,3mm
Erik
Erik, thank you. Is this screen shot simplify3d?
I dont have the option of Thin Wall Behavior on any screen. On the advanced tab, under Slicing Beha
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appjaws1
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Ormerod
Quotedc42
That looks to me like a classic slic3r issue I have come across before, caused by the thickness of the wall being more than twice the extrusion width but less than three times the extrusion width. So slic3r can't generate extrusion between the two perimeters. Try making the wall thicker.
Yes Thank you David, I remembered that it could be to do with the wall thickness and I have increas
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appjaws1
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Ormerod
Well I haven't solved my gap problem. The outside walls are supposed top be solid.
I've run out of ideas of what to do to resolve this issue.
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appjaws1
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Ormerod
I don't believe that this is a belt tightness issue.
I think it is the settings in slic3r that you need to experiment with because it looks to me as if the extrusion is not filling right to the perimeter
check under Print Settings, Layers and Perimeters that you have Vertical shells set to 3
under infill don't check Infill before perimeters, leave blank
The other thing, is to check what your ex
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appjaws1
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Ormerod
Quotedmould
Thinking about it, there may be mileage in having the firmware gradually decrease the amount of bed compensation until there is no compensation at all after a certain number of layers. So if the compensation causes the Z height to need to vary by 0.5mm on the first layer, pull the top excursion down to 0.45mm on the second layer, then to 0.40mm on the third layer etc, until there is
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appjaws1
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Ormerod
Quotedc42
It occurred to me that in a dual extruder system, if one extruder drive assembly could be placed at each end of the X axis or slightly beyond it, then as the head moves along the X axis, one Bowden tube would exert more pressure and the other less. So the effect may cancel out to some extent. The nearest one could get to this on a standard Ormerod would be to use the 1st and 3rd extrud
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appjaws1
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Ormerod
Thank you for the replies,
I have solved this issue by printing a small cube by the side of the item. When the hot end reached the main item the second colour is flowing properly. I still had the extra extrusion amount of 4mm on tool change, which leaves a splodge of filament at the edge of the print area.
Photo 1 shows the result on the test L Shape, 2 colour item, the transition from one col
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appjaws1
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Ormerod
For the last 6 months or so I have had DaveK's aluminium replacement arm and aluminium bed installed, these mods have made a big difference over the original supplied parts.
Quotedc42
The 5-point bed levelling essentially works like this. The corner bed levelling points are extrapolated to beyond the corners of the bed, by assuming that the angle between the centre bed levelling point and the cor
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appjaws1
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Ormerod
@ormerod168, Thanks Eric, I have just cut the tie holding the cables and just about to see if that solves the problem
@TH57 Good question Tim
Can anybody explain in plain English how the levelling calculations actually work. It would be great to have an understanding.
Thanks to everyone
Paul
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appjaws1
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Ormerod
I am using a 2 nozzle ormerod and have an issue when the g-code changes the nozzle. Not enough filament is extruded for the new nozzle, so the print has gaps along the colour change line.
I have tried using the post and free g files to extrude a little extra on tool change but that has only partially solved the problem.
I did eventually solve it by decreasing the speed of the first layer of th
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appjaws1
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Ormerod
I am using 5 point automatic bed levelling and Z0 setting.
P0 X36 Y43 Z= 1.2
P1 X36 Y200 Z= 1.21
P2 X210 Y200 Z= 1.26
P3 X210 Y43 Z= 1.25
P4 X110 Y110 Z= 1.10
P4 is the middle of the bed and is showing that the level is lower than the 4 corners. This can not be correct, My 4mm glass is perfectly flat.
So what could be causing this reading to be at least 0.1mm too low?
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appjaws1
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Ormerod
I am using zpl's firmware at the moment and slicing using simplify3d. I have been using Z lift after retraction for a few days as I was getting really messy prints with filament being extruded in gaps and as previously reported, a gap in the thin wall test at the end of a loop, I think caused by retraction.
This only started a few updates ago.
With the Z lift after retraction the problem has disa
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appjaws1
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Ormerod
Working well, no problems to report
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appjaws1
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Ormerod
Quotezombiepantslol
I know RRP has already released version 0.99 on their dev branch, but most of their changes are related to 3-nozzle printing and I don't want to deal with this at the moment. I also noticed they introduced M571 and that they kind of abuse the cooling fan pin for their purposes, which is why I don't want to merge in their current implementation into my fork. I may have a look a
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appjaws1
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Ormerod
Quotezombiepantslol
That only turns off bed compensation, but not axis compensation. You can send "M556 S100 X0 Y0 Z0" to disable axis compensation.
Thanks for that, printing now.
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appjaws1
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Ormerod
Quotedc42
Assuming you are using M563 S1 in your gcode file to renumber the tools to cope with slic3r's tool numbering, then G10 P0 S0 R0 and G10 P1 S0 R0 is correct. because P is the tool number and that will get adjusted. Or you could use M563 S0 followed by G10 P1 S0 R0 and G10 P2 S0 R0.
In my fork, M0 still turns all heaters off, so I use M0 in the end gcode. But I think zpl has changed M0
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appjaws1
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Ormerod
Running a 2 nozzle machine , I have the slic3r end G-code turn off the hot end heaters on both nozzles when a print finishes.
M104 P1 S0 ; Turn Hot End 1 heater off
M104 P2 S0 ; Turn Hot End 2 heater off
M140 S50 ; set bed standby temperature to 50C
The problem I have is that the hot end standby temperature is still active, so one of the hot ends will remain at standby temperature.
I have t
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appjaws1
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Ormerod
Well I have made progress, the main difference is to select External perimeters first in slic3r under Printer settings, Layers and perimeters and to reduce bed and first layer nozzle temperature.
I still haven't been able to improve on the top surface. This picture shows the test object with the top solid layers set to 5.
@dmould I am running with 2 heads and am using the firmware listed i
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appjaws1
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Ormerod
Quoteormerod168
This setting will also influence the dimensions, Slic3r, print settings, layers and perimeters, external perimeters first, I do have this box un-ticked but read what Ian RepRapPro has to say about it:
Erik
I wonder if anybody has the skills and time to fork slic3r and incorporate the changes that will ensure correct dimensions.
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appjaws1
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Ormerod
In the above photo you can see that the bottom layers start off to the left - Y+ direction. I have tried different slic3r settings but can't get rid of this. I have layer height of 2.4, first layer height 2.4, 3 bottom solid layers, first layer speed of 50% and all of the advanced extrusion widths set to 0 except the top which is 80%.
So I don't understand why the left hand end is sloping whi
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appjaws1
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Ormerod
I carried out a thin wall test earlier on both nozzles and each print had a gap at the rear left hand corner where the layer change happened. Watching the nozzle you can see that each time it passed that point their was a hesitation, a slight pause, it is almost like the very last bit of the run, not enough filament was extruded, or the extrusion stopped too early.
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appjaws1
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Ormerod
Quotezombiepantslol
Hi Paul,
sorry to hear you're having problems, but thanks for the diagnostics info. Could you send me your G-Code file? I reduced the size of my code queue in the last release and it looks like it's no longer big enough to queue all of your M106 codes. I didn't expect it to freeze when that happens though.
I was manually adjusting the external fan control when this happened,
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appjaws1
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Ormerod
My ormerod froze during a print with the active head 1 in contact with the object and a temperature of 191, head 2 standby at 155 and bed active at 63
If I pause and resume the head returns to the same spot and nothing happens. I need to abort this print but below is the output of M122.
M122
Platform Diagnostics:
Memory usage:
Program static ram used: 47516
Dynamic ram used: 36404
Recycled dyna
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appjaws1
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Ormerod
Quotedmould
To move away from the part & back again with G code macro files, just switch to relative moves before moving away, then reverse the directions to move back, and finally switch back to absolute moves. You just need to pause in a position where you are sure that the relative moves won't try to take the head outside the print area.
Dave thank you for that. I did try that initially
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appjaws1
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Ormerod
Quotezombiepantslol
Hi Paul, thanks once more for your feedback!
Quoteappjaws1
It would make more sense to have the head return to the correct position before lowering to the correct height, at the moment the head lowers and then the head is moved into position with the potential problem of catching on a stray bit of plastic.
Sorry, but I definitely won't change the order of my resume code. Th
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appjaws1
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Ormerod
Thanks David, Can you please pass me the magic wand so that I can wave it around and all issues will be fixed without me having to engage brain.
Paul
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appjaws1
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Ormerod
Quotedc42
The traffic cone I downloaded from thingyverse here has 5 bands but the STL files are for just 2 extruders.
Yes I have printed that object. I was just using that as an example.
How do you actually split an object into 5 parts and then produce a stl file for the alternate bands which would have an extruder assigned.
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appjaws1
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Ormerod
Quoteellipse
I have the feeling that I'm missing something obvious before running the compensation again, like clearing something related to the z-offset measured on first run (some transformation matrix?), as the height of Z_DIVE apparently changes. I'm using DC42 0.78t firmware.
I have M561 ; clear bed height transform in my setbed file
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appjaws1
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Ormerod