sricha

Hello. First, thanks to all of you for all your hard work! I have a feature request to add an additional selection in the "z seam" section that is identical to "random", except it limits the travel from the end of the last perimeter to the start of the next perimeter. Presently, with "random", the start start of the next perimeter is chosen to be a random location along that perimeter. With "limited random", the start of the next perimeter would be chosen to be a random location within a "d_mm" radius of the nearest location of the next perimeter to the end of the last perimeter. Of course, "d_mm" would be a user defined parameter which would probably be in the range of 10-25mm. So that way, the travel move to the start of the next perimeter would either be no more than 10-25mm from the end of the last perimeter, or at most, no more than 10-25mm from the shortest possible travel to the next perimeter. This should save time (compared to random) and result in slightly less oozing and blobs. I hope that made sense. If there's a combination of settings that already accomplishes that goal, then that would be even better! Thanks, Scott

An important fact when creating a dry box (which I did): ==> water vapor (H2O) is only about 60% as dense as (ie is LIGHTER than) dry air (O2 & N2) <== The density ratio isn’t orders of magnitude but it’s significant enough that in a very, very still environment (such as a sealed container sitting on a shelf for weeks) a stratification will develop with drier air tending to sink down. Since we usually put desiccant at the bottom of a dry box, we are essentially drying the portion of the air that is already drier than the rest. It’s like trying to heat a room by putting an electric heater on the ceiling: yes, diffusion will cause the whole room will be warmer than if the heater wasn’t there, but its intuitively much more effective to place the heater in the coolest zone rather than the warmest. Using two hygrometers I can confirm that there is an RH difference of about 10% in a box only 25cm tall without active mixing. After installing a small fan, the RH is uniform throughout. A cleaner (and quieter) solution would be to find/make a desiccant container that can be mounted toward the top. -And dryer filament will noticeably reduce or eliminate that last bit stringing that the normal methods just can’t seem to get rid of.

For the record, the filament I’m using is eSun PLA+, grey. Prior to drying the filament I had tried dozens of combinations of settings. Some seemed to help a little, but even the best still resulted in wispy, hair like strings instead of outright blobby ropes. When I dried the filament, the wispy hairs vanished.

I’m still wondering why the sequence seems to be: wipe-retract-lift instead of: retract-wipe-lift which seems like it would be much more effective at “hiding” any unretracted material in the interior of the active island so that it doesn’t end up as strings between islands. However I wanted to let everyone know that my stringing problems have disappeared after changing one parameter: moisture. The basement where I store filament and print is about 70% RH. So, even though I’m only using PLA, I found that once I started storing my filament in bags with desiccant at about 10-20% RH, the prints have become string free despite the odd order of retraction.

I’m new to the group and relatively new to CURA, so please pardon me if these questions are too “beginner”: When both wiping and retraction are enabled, is there a way to force CURA to retract before wiping rather than the reverse? Also, is there a way to force the wiping to occur on an inner wall rather than an outer? Thanks in advance for any clarification.