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Thank you frankvdh,
I think I might be using this the wrong way because I keep getting children index (0) out of bounds
As an example I am trying to do something similar to
$fn=50;
minkowski()
{
cube([10,10,4]);
cylinder(r=2,h=4);
}
with a minkowski()
{
cube([8,8,2]);
cylinder(r=2,h=2);
}
removed, leaving a hollow rounded corners cube with 1mm walls.
I think my problem is that I don
by
appjaws1
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OpenSCAD
Just a thought, you could reduce the $fn function while you design and then re-instate it for the final render.
This works for me and make a big difference.
by
appjaws1
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OpenSCAD
In another thread it was highlighted that Minkowski difference is not implemented in openscad.
So how do we request a feature be added to openscad?
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appjaws1
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OpenSCAD
Hope to try this on a coreXY machine.
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appjaws1
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General
Just thought I would let you know that I recently built a D-Bot and have found it works very well in the print quality department.
I would recommend that you obtain duet hardware,especially the duetwifi.
I have a duetwifi, dueX5 expansion board and a dc42 mini Z probe with a E3Dv6 lite hot end and a modified extruder, similar to the ormerod original.
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appjaws1
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CoreXY Machines
Just amended the Duetwifi and duex2/5 enclosure on thingiverse --
This has fixed a few problems and offers more choices in the scad file i.e.
Duetwifi no fan
Duetwifi 40/50/60/80 external fan mount
Duetwifi 40/50/60/80 internal fan mount
Duetwifi and duex2/5 no fan
Duetwifi and duex2/5 40/50/60/80 external fan mount
Duetwifi and duex2/5 40/50/60/80 internal fan mount
fan guard 40/50/60/ fan widt
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appjaws1
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Duet
I have used spheres to make the rounded edges with the height increased by the rounded amount, then I have just removed the top by a cube with the height just over the rounded amount to end up with a square edge and rounded sides.
This is some code that was provided to me by a forum member, hope it helps
Lid=true; //set to false if lid not required
screw=true; //set if screw lid
RelieveOver
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appjaws1
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OpenSCAD
enif,
thank you very much, just what I'm looking for.
I think I might be doing something wrong because I can not get your code to work.
There seems to be an extra ")" on the last line and when I remove it the code compiles but no matter what I set fan_width to I only get -1 returned
So I am stumped, it's probably easily rectified but I just don't have the skills to spot the error.
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appjaws1
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OpenSCAD
I have been using:-
fan_mount_dist = (fan_width == 50) ? 40 : 32;
which will assign 40 to fan_mount_dist if fan_width=50 else it will assign 32 to fan_mount_dist.
What I need to do is have a selection of 4 items(32,40,02,70 which will depend on the value of fan_width of 40,50,60,80.
any ideas how to accomplish this?
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appjaws1
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OpenSCAD
Quotethe_digital_dentist
Worst case is when you're making 45/135 degree lines - only one motor is turning and must move both X and Y axes. As long as each motor has adequate torque to move both masses with the speed, acceleration, jerk, and precision you want, it will work fine. The X and Y axis performance will necessarily be different because you're using one set of motors to move the axes.
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appjaws1
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CoreXY Machines
Thanks for that, looks good
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appjaws1
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Duet
Hi,
Has anybody got an openscad design for the duet wifi?
The reason I would like openscad is so that it can be modified to take the deuex5 board as well.
Just looking for shortcuts to print a case so any help would be very appreciated
I will ask this on the wifi forum as well.
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appjaws1
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Duet
Yes finish is a lot better, I now operate with a multiplier of 89%, previously it was 98%
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appjaws1
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CoreXY Machines
Thanks to all,
I was over extruding so getting that correct plus tweaks of acceleration etc has solved the problem
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appjaws1
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CoreXY Machines
QuotefilipeCampos
Hi,
This problem is because you over extruding on the corner, tacking to much time to change direction. Simply increase the value of Jerk XY moves to speed up the direction change, but not too much or your printer can start shack big time or even missing step
Have increased X and Y jerk speed to 700 from 600 and looking at the object I am printing at the moment, I can see no i
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appjaws1
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CoreXY Machines
Thank you for the response dc42.
I have tried pressure advance with settings ranging from 0.09 to 0.15 and I could not see any difference in the bulge problem on external corners.
On my core xy machine the bowden tubing is 800 mm long, so I wonder if I need to try larger settings, maybe 0.2, what do you think?
I have also tried reducing the extrusion multiplier from 0.98 to 0.93, but again no re
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appjaws1
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CoreXY Machines
No, I haven't tried pressure advance.
This must have passed me by.
Where can I find information on it's use and set up details?
Thanks for your help
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appjaws1
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CoreXY Machines
If I print a square profile, each corner has a slight bulge due to too much filament being extruded. I think this happens at the instant of change direction when the nozzle is at a standstill.
I have tried various tweaks in simplify3d but have been unable to eradicate this anomaly
I wonder if a firmware tweak could solve this.
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appjaws1
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CoreXY Machines
Thank you Dave,
I came to the same conclusion and have designed the part using the original as a guide.
I did try and repair the modified stl but every program I tried did not find any errors.... strange.
It would have been interesting to discover the reason for the error so perhaps I could avoid whatever it is in the future.
Paul
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appjaws1
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OpenSCAD
Hi,
How do I solve this error?
ERROR: CGAL error in CGAL_Nef_polyhedron3(): CGAL ERROR: assertion violation! Expr: pe_prev->is_border() || !internal:lane_constructor::get_plane(pe_prev->facet(),pe_prev->facet()->plane()).is_degenerate() File: /opt/mxe/usr/x86_64-w64-mingw32.static/include/CGAL/Nef_3/polyhedron_3_to_nef_3.h Line: 251
This is the code (Wheel_Guide.stl is attached)
d
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appjaws1
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OpenSCAD
If I have 1 stepper motor for Z movement with the current set at 1 amp and then add another motor in series, what should I set the current to?
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appjaws1
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CoreXY Machines
Thank you, do I need to create a request for this facility to be included in the firmware?
It would certainly help users with 2 Z motor's .
Quotedc42
Quoteappjaws1
Thanks for the info.
dc42, is it possible to have a facility whereby the power OFF/ON routines ensure that the motors are at a full step? Could this be accomplished in firmware for startup and perhaps a macro for shutdown ?
It wou
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appjaws1
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CoreXY Machines
Thanks for the info.
dc42, is it possible to have a facility whereby the power OFF/ON routines ensure that the motors are at a full step? Could this be accomplished in firmware for startup and perhaps a macro for shutdown ?
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appjaws1
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CoreXY Machines
Thank you for your advice spauda01
I am so pleased with your design, thank you for your efforts. Which design software did you use to produce the components?
The reason I have a front rail is so that I can use 3 point bed levelling instead of the default 4 point. You are right I do need to move the motors near to the centre of gravity.
Do you find that the 2 motors go out of sync at all?
I hav
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appjaws1
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CoreXY Machines
Quoteunromeo21
Can you tell us more about the performance of the drivers ? How do they compare with the "old" ones regarding noise, smoothness ? To me this would be the greatest plus over the current controllers on the market.
I concur with Koko76, in addition, is the increased current that the drivers can handle and therefore do not get as hot.
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appjaws1
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Duet
Just thought I would update on my progress.
The new duet wifi control board is working great, especially after the latest firmware update.
What a great piece of kit it is, no hard network connections needed, control of the printer via a web browser on my smart phone or computer is perfect.
Here are the latest pictures of my corexy build.
.
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appjaws1
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Duet
Just thought I would update on my progress.
I originally bought 2 stepper motors with lead screws fitted, from reprap.me. These failed very quickly(after approx 6-8 hours printing) and now just make grinding noise and instead of turning they just vibrate. Reprap.me have been very unhelpful and are saying that the guarantee is only for 3 months, I requested replacement items or a refund and the
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appjaws1
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CoreXY Machines
Have a look at the duet wifi instead of the smoothie.
Just a suggestion for your consideration.
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appjaws1
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CoreXY Machines
I have had a beta board for a few days.
What a great piece of hardware that is future proof, well designed and has flexible options.
The initial setup went well and my new coreXY machine was soon humming with delight.
I have completed about 8 hours of prints with the duet WiFi so far, ranging from a simple calibration box to more complicated items, at the moment I am printing a 3DBenchy
I have
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appjaws1
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Duet