SoliForum - 3D Printing Community — Blobbing at the start of a new line

Re: Blobbing at the start of a new line

2013-10-06T21:08:07Z

Thanks for the suggestions. I would try changing the stepper driver, but the new board has everything soldered down. It would be no easy switch. Slowing the perimeters has helped a little.

I went higher on the extraction length, but it seems like the blob starts at the beginning of a new line, not at the end where the retraction would help. I'll try lowering the temperature a bit. That makes a lot of sense also.

Re: Blobbing at the start of a new line

2013-10-05T15:55:56Z

muddtt wrote:

I guess my first question is: Is this a normal thing to expect?
If it's not, how do I get rid of it?
I've been messing around with retraction settings. Even tried -0.3 on extra length at restart. Nothing seems to be helping that much. Extrusion and feed rate has been calibrated. Any help would be great. Thanks!
Extruder temp: 195
Latest RH/Slicer

What values have you tried for retraction? When I was using the stock hotend, some filaments required almost 2mm of retraction to stop the blobbing. The other thing that helped was adjusting the temps lower by 2-3C. YMMV

Re: Blobbing at the start of a new line

2013-10-05T14:04:52Z

It looks like it overshoots a little bit as it turns the corner. Try slowing down the speed for external perimeters and see if that helps.

Re: Blobbing at the start of a new line

2013-10-05T12:18:27Z

I believe the answer to this is in the extruder stepper. The stock extruder is 1/16 step. If changed to 1/32 it will almost completely resolve this issue.

I would suggest a search for this topic.

http://www.soliforum.com/post/33374/#p33374 deals a little with the topic, but there are other threads that may be more helpful.

Blobbing at the start of a new line

2013-10-03T20:28:05Z

I guess my first question is: Is this a normal thing to expect?

If it's not, how do I get rid of it?

I've been messing around with retraction settings. Even tried -0.3 on extra length at restart. Nothing seems to be helping that much. Extrusion and feed rate has been calibrated. Any help would be great. Thanks!

Extruder temp: 195
Latest RH/Slicer