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ArcWwelder creates "Blobs" on in and outside of a circular object

Open Seri- opened this issue 3 years ago • 9 comments

I have been using ArcWelder for quite a whiel and this is the first occurence of such an obvious error. The top ring is printed from the original file the bottom from the created Arcwelder file. I am running the latest dev. version of Arcwelder on a about one month old version of Marlin bugfix. The used firmware as well as both gcode files can be found in the google drive.

IMG_20210304_205247 IMG_20210304_205307

https://drive.google.com/drive/folders/19Id1-YcuNoUH5U-bXOYu9U6d96RRy7V-?usp=sharing

Seri- avatar Mar 04 '21 20:03 Seri-

Hi, I have a different configuration (Marlin 2.0.7.2, stable version of ArcWelder 1.0, BTT SKR V1.3) and same issue.

Typho81 avatar Mar 05 '21 10:03 Typho81

FYI, still looking into this. I pretty much have to work through the gcode by hand since no visualizers I know of handle flow rates. I am adding some enhancements for Cura Arachne (flow rate detection) that should help debug this, so it's on the back burner until i have that enhancement ready.

FormerLurker avatar Mar 10 '21 14:03 FormerLurker

So, I've gone over several layers by hand to make sure the extrusion lengths add up correctly, and so far I can't find anything wrong with the welded gcode. I'm going to try printing the first couple layers myself, just have to alter the start gcode.

FormerLurker avatar Mar 30 '21 17:03 FormerLurker

So it might "just" be marlin missinterpreting something or not handling the arcs correctly? I have printed the "welded" code two times and both had the same errors.

Seri- avatar Mar 30 '21 17:03 Seri-

It's printing now, so we will see. Your model BARELY fit on my build plate. I had to remove the skirt. So far it looks OK, but time will tell. I'll let it print up a few MM so it will be obvious.

Sorry this took so long, but it is a pain to verify extrusion amounts :)

FormerLurker avatar Mar 30 '21 17:03 FormerLurker

All good, not like you owe me anything ^^. But urm, barelly fit? it is only like 10,7 cm in diameter. Did you accidentally translate the gcode to inces or something? :P

Seri- avatar Mar 30 '21 17:03 Seri-

But urm, barelly fit?

It's not the size, but the position. My bed goes from 0-210mm in the y direction, and the skirt crept over a bit.

So, the print is finished, and though i had some layer adhesion issues (Your print speeds are too fast for my printer, and cooling too low for my filament), I don't see any blobs. Maybe try updating marlin and retry the print?

FormerLurker avatar Mar 30 '21 17:03 FormerLurker

ah that makes sense. Will do but not today sorry :( gimme till tomorrow evening.

Seri- avatar Mar 30 '21 17:03 Seri-

I had this the other day because the printer mainboard was not processing the commands quickly enough. If you watch it, it probably pauses and hangs for a second and oozes at each blob point. I suggest reverting back to a known good firmware.

On Tue, Mar 30, 2021 at 1:57 PM Seri- @.***> wrote:

ah that makes sense. Will do but not today sorry :( gimme till tomorrow evening.

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seantapscott avatar Mar 30 '21 20:03 seantapscott