Top layer Moonscape
First time experiencing this issue, no idea what's going on. Any ideas? Printing this shredder at 200% using the provided .3MF files (with slight modifications/preferences.) Everything looks good EXCEPT for the end panels which have some weirdness going on in the top-most layers. Pictured is the second attempt WITH top surface ironing enabled. First attempt (without ironing) was even worse. Pretty sure it's not damp filament as much of the surface is perfect. Several hours into the third attempt and all looks fine (infill pattern, etc.), will probably not be home to observe the final layer(s) being layed down. If it turns out the same, I can probably sand down the ridges acceptably, but seriously, WTF?
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4
That .3mf contains no metadata so you are using whatever print settings and profiles you happen to have left on your machine from the previous print.
Are you using a high density of fill? These artifacts often show up close to 100% if the extrusion rate is not optimal. They sometimes occur when a flat part is warping off the bed or is overcooled.
Cheerio,
RE: Top layer Moonscape
Looks like related to infill and number of top layers. I'd increase the number of top layers and play with infill type and density.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Top layer Moonscape
The infill (40%) is perfect up until the (four) top layers start to lay down. I was able to watch and the bead just seems to not adhere, but only in specific, but seemingly random areas. Up until this started, I had been printing at 150% speed. As the problem developed I dropped it back to 100% but the problem persisted. I also checked the belt tension, but it's spot on. The "direction" of movement of the nozzle makes no difference. As it printed these last layers, I used a broad, flat tip on a soldering gun to "force" the ridges down (a sort of manual ironing. The final ironing pass of the nozzle made a more acceptable final result, but it is still noticeable. Still looking for a reason and solution.
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4
RE: Top layer Moonscape
For a large flat surface four layers at 0.2mm layer height feels low to me. I usually have at least 5 or 6.
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Top layer Moonscape
Each layer added its own ridges, it would have been even worse.
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4
RE: Top layer Moonscape
What's your infill pattern?
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Top layer Moonscape
Gyroid, but I can't see how the pattern makes any difference. I've used that pattern on numerous other prints without having that issue. The last infill layer before the final four top layers looked perfectly formed. The ridges seem to form randomly, i.e., not in the same locations or with the same precise shape in each of the three prints, although there is obviously some linear pattern in their structure. This last picture is of the next-to-last layer in progress. Still mystified.
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4
RE: Top layer Moonscape
Once I loaded the .3MF I modified several settings, so they were not "leftover" from a previous print. IIRC, the infill was 30%.
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4
RE: Top layer Moonscape
I see I have posted two different percentages for the infill. I may have tried both during the three trials, but it would not have been more than 40% in any case.
Hear ye, Hear ye! Step right up folks and get your Government salvation here! Less than $.002 per word! Amazon.com/dp/B0B8XMMFP4