@cope413 I recently started experimenting with PrusaSlicer and I noticed that my Ender 3 is printing a lot faster. I had shown these pictures to a couple of folks that I have purchased 3D printed products from and they basically said the same thing you did. I just looked at the settings in PrusaSlicer and first layer speed is set at 30mm/s and the first layer height is 0.35mm. For reference, the same settings in M/C are 20mm/s and .20mm respectively. I wanted to try PrusaSlicer because James Fewster, who prints commercially, had high praise for it. One of the things I noticed is that an STL file exported by M/C and then imported into PrusaSlicer reports the there are various errors that need to be fixed (which it does). I re-slice and export the file as Gcode, then open that Gcode in Matter Control and print it (a bit involved I admit). It seemed that, overall, I was getting better prints, except when there was a large first layer surface area as in this item. Based on your suggestions I think I will go back to this single layer test print with the slower and lower settings and see if it makes a difference. As to your second point, I do thoroughly clean the build plate with IPA between each print (looking for fingerprints) and they are generally stuck on there pretty good. Thank you for your response.

I've had my Ender-3 for a little over a year and have been using Matter Control for about 8 months. That being said I still consider myself a novice because I've only been printing in earnest for the last month or so. Most of my projects have been small but I have noticed the occasional missing line (short segments) of filament and I kind of ignored it because for me it was more cosmetic than anything. Today I tried to print something bigger and important (for a project I'm working on) and you can see the areas where consecutive runs of filament aren't bonding together and started to curl up away from the print bed. I think (because I'm still very new at this) that this is under-extrusion but I'm not sure. If it is, what would be the best way to address it? I'm using Overture PLA+ with the hot end at 215 and the bed at 65. I haven't really had problems with adhesion until now (I have a glass bed and I've been happy with it), but I would like to get this figured out. I was able to finish this print but the face, which is usually smooth as glass, looks a little chewed up. I appreciate any insight you all may have.

I've had my printer for about a year (Ender 3) and have used Matter Control for about the last 9 months. I haven't done a lot of printing and what I did print didn't require much dimensional accuracy (I'm using PLA). Recently, the last few projects have been smaller, by about 10% when printed, than what the measuring tool indicated. I opened an .stl file for a fan grill (120mm) that had 105mm hole spacing for the mounting holes, and I confirmed the dimensions were correct before printing. The holes ended up at about 103mm when printed. Another project had recesses for 4mm nuts, and again, it was to small. I printed a second one but I increased the scale by 10% and the 4mm nuts dropped right in, a perfect fit. I understand that some of this difference is due to shrinkage but I can't believe that it would be as much as 10%. Can anyone suggest a good strategy for improving the dimensional accuracy of my prints? Adjustments to the printer or within Matter Control? Or, upscale everything I print by a certain percentage? I would appreciate any suggestion you may have to offer.

@larsbrubaker Thank you Lars, cope413 was really helping me out with some design issues I was having and I had hoped to keep the link to that post. Up until your reply I was afraid to post anything for fear of getting deleted again, for something I didn't realize I had done. In the future I'll save the really good posts to my computer. It might sound silly, but I really love this program and what it can do. I'm going to re-post my last question about the difference between actual print vs design size because I think there's more going on then just shrinkage. Thanks again.

@cope413 I sent you a chat from your profile page but I don't know if you got it. My username (bionicback321) remains unchanged as I was able to log in under my original username and password. The forum now shows me as a new member even though I've been on here for almost a year.

@mavin My last post was about my prints being smaller then what I designed in Matter Control software (and I gave a couple examples). One object had to be scaled up by about 10% to get the 4mm nut to fit. I can't for the life of me figure out what was in the title or the post that looked like spam. I see post for meds and supplements which are obvious spam, but I was asking about what I now know to be, to some extent, shrinkage (although I don't know if that accounts for the whole 10%). I am embarrassed and somewhat humiliated that my account of almost a year was deleted. I wish I knew what it was that triggered the deletion so that I don't do it again. I had gotten some good tips from cope413 which were very helpful, but they are now gone. This leaves me very gun shy about ever posting again for fear of being deleted again. Finding Matter Control software saved my 3D printer from getting chucked in the trash can, and I have learned so much from this forum. I would like to know what I did so that I can avoid Damnatio memoriae in the future.

I'm not sure what happened but my account history has been wiped clean. The info in my profile is gone and every post I've made is gone. I had recently posted about prints being about 10% smaller then expected (I now know some of that is do to shrinkage) and had asked about creating hex shapes and aligning them with other objects. I had bookmarked that post for future reference but now I get an error that the page no longer exists. Just curious what happened.