How to tune seam?

[Trhuster]

As you can see on the pic my seam is not very good. I have used different retraction values from 0 to 1.4 but that does not change anything regarding the seam. I have no clue where to go from here.



FFF file is here: https://www.dropbox.com/s/voo7cfko0iuju ... s.fff?dl=0

[JoeJ]

There are many options in the software to control this. FIrst of all, you want to tune your retraction settings to make sure you have those right before messing with anything else. The best way to do that is with a part that requires you to move over open space repeatedly. For example, this one: http://www.thingiverse.com/thing:30171. Just keep increasing the retraction distance until you don't see strings between the pillars. Then go back and print the boat part again.

At that point, it would be useful to know a bit more about your printer if you are still having trouble. What brand is it? What type of plastic are you using? Can you post your current factory file? The next settings you would play with are likely the retraction extra restart distance and coasting, but it's good to know more info first.

[Trhuster]

Thx i will follow your advice and start printing some retraction tests. FFF file is in link below pic.

[Trhuster]

I used the same setting for this as with 3dbenchy. This is how hollow cube went. Seams is alot better when in corners for sure and no stringing at all.

Machine is called Clone R1 and uses sailfish 7.7. It is a Core X/Y printer with a direct drive extruder all metal hotend. I use Z-ABS at 270c. (Zortrax brand)

Factory file is here: https://www.dropbox.com/s/ttafunky7ecpx ... ctory?dl=0

[JoeJ]

Oh nice! So you must be one of the few lucky people who get a beta unit then??

Anyways, your cube actually looks really good. I don't see any of the issues from the benchy print in the cube, so I'm guessing we just need to look at what's different. I noticed that you had "force retraction between layers" disabled for the 3dbenchy print. Try to enable that (see Advanced tab).

Then do another 3dbenchy print and watch really closely when it prints the outer perimeters. If you still see blobs, let us know if they appear to be forming at the beginning of the perimeter or at the end. That will make it easier to recommend the next setting change.

[Trhuster]

Yes i was actually one off the lucky ones the get a Clone R1 beta printers. I have thinking about the seam abit, one part off the problem can be that simplify3d does the seam uneven, see pic. And when looking at the the prints it seems that when printer start the new layer it underextrudes abit, but when i tested with 0mm rectracion distance seam was the same as with 1.4mm.

[Trhuster]

This is also printed with same settings as in factory file above. The two parts is printed at same time. What do you think, looks like underextrusion? If it is what to change, extra restart distance mabey?

[JoeJ]

Again, I would run a print with "force retraction between layers" enabled and then watch to see if the blobs form at the start or end of each perimeter loop.

[Trhuster]

Again, I would run a print with "force retraction between layers" enabled and then watch to see if the blobs form at the start or end of each perimeter loop.

So same settings as before except i enabled "force retraction between layers" . To me it looks almost the same, mabey a tiny bit better.

[JoeJ]

I think it looks a bit better, so we're going in the right direction. So do those blobs form at the beginning or the end of each perimeter? Watch closely while it's printing and then let me know