Printable View
Good Morning All!
OK so I posted here before about my issue with corners rounding. I have made adjustments and still have the issue. Here is what I have done:
tightened belts aswell as added belt tensionors
Slowed jerk down to 15
Slowed acceleration down to 500
Printing at 30mm/s
I am at a loss on what to do. I have attached two photos showing what is happening.
Help Obi Wan Kenobi, your my only hope...Attachment 6211Attachment 6212
What size filament , what temp and extrusion multiplier are you using?
I am using 1.75 filament, at 210, with a .92 multiplier
I also use a cooling fan that is on all the time
Try setting your:
Nozzle Diameter to :.35
Extrusion Multiplier: .90
Extrusion Width : .40
Turn off fan just to test..
Make sure your retraction settings are set as well.
Just to be clear, I should set my nozzle diameter to .35 (.05 smaller then what I have)? What do you recommend for the retraction settings? I believe I have that set to 5mm I would have to check
yes, set it a bit smaller...retraction settings depend on your setup...I use E3d 1.75. My retraction is set to 2mm at 15mm/sec.
Great! I will input these settings, and give it a shot tonight. I will report back with my findings. Thank you Voodoo for your help!
Voodoo why do you set the nozzle size .05 smaller than the actual size? I am curious as we have the same setup.Quote:
Originally Posted by voodoo28
It will eliminate the back and forth filling between two thin walls..Quote:
Originally Posted by kablahz
I saw this on a video from 3d Hangouts..
see here for better explanation: https://youtu.be/grRQ8MWkf0A?t=26m
A little off subject, but I noticed that we all have similar builds, does going with the Rumba or Rambo boards over the RAMPS add any benifits. Other then being able to control the cooling fan?
Wow very interesting find but do you always use this nozzle setting for every print or just ones with two thin walls?Quote:
Originally Posted by voodoo28
Honestly... Ive always just left it at this setting..I usually print with two or three perimeters.
Quote:
Originally Posted by Schnupp
Its a matter of preference for the most part.. Many people like the ramps because is Modular. I personally like the simplicity of the RAMBO plus the fact that it does not require cooling fans, it controls all the axis motors plus two extruders with out having to purchase additional driver boards. The digital pots on the RAMBO are also a nice feature.
As a matter of fact just last night I ordered another 12 prusa from Colin with a Rambo setup just like my current one.
Quote:
Originally Posted by jheikkila54
Hey Voodoo, I made the adjustments you suggested, it does make my prints better so I am greatful for your input. However, I am still getting the rounded corners. Any chance you could take a look at what settings you have for DEFAULT_MAX_ACCELERATION, DEFAULT_ACCELERATION, and DEFAULT_XYJERK and post them here for me?
Glad to hear, im not sure my settings would work. I am running C42's Flex Extruder and the Marlin set up for that, but its worth a shot. You can always revert the settings..make sure to send M502 then M500 commands after flashing.
settings are:
#define DEFAULT_MAX_ACCELERATION {1000,1000,5,1000}
#define DEFAULT_ACCELERATION 500
#define DEFAULT_XYJERK 20.0 // (mm/sec)
#define DEFAULT_ZJERK 0.4 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)
Quote:
Originally Posted by jheikkila54