So I have been experimenting with the new Initial Layer Horizontal Expansion to get rid of my small Elephants foot issue. In Slic3r, you can find this as Print Settings/Advanced/XY Size Compensation. This may help in overcoming over extrusion on the first layer, increasing the dimensional accuracy. When the model has a lot of detail on the first layer, it might have a decreased quality because of the thicker layer. This limitation can be compensated for with the "initial layer horizontal expansion" setting, which is found under the Shell category. Cura has a setting called "Initial layer horizontal expansion" which is supposed to help with Elephant's foot. My first approach would be to look at the strength of the walls above the first layers (since quite often the strongest effect is that the skin doesn't shrink but the walls around the infill do). One of the most common causes of this problem (other than not leveling the bed tight enough to the extruder) is an improperly configured first layer setting in the slicer.To obtain good adhesion to the bed, the lines of the first layer need as much surface contact with the bed as they can get. You can find the Cura first layer settings under the “Advanced” tab in the “Quality” section and will be labeled “Initial Layer Thickness.” It’s important to understand how to set up your first layer for a successful model, along with a few other related settings. One was the height of the Initial layer which I used per object settings to enter the -0.3 horizontal expansion. Adjust initial layer horizontal expansion We adjusted the initial layer horizontal expansion for some profiles. privacy statement. Press J to jump to the feed. When clicking into the Advanced Settings tab we then take a look at the Retraction and Quality sections of Cura. I do not proclaim to be a genius in this regard, I just want to share so we have a starting point for the longer discussion. We’ll occasionally send you account related emails. I will accept a pull request which introduces such a feature, but I think it's the responsibility of the designer to make the model printable, so this is not something I am willing to put effort in. 3. share. The default on Cura is .3mm which gives a thick bottom layer that’s easy to build on and sticks to the platform well. ill show you! Had no idea this was a thing in Cura before stumbling on this thread. Below you can find printing recommendations for Cura and Simplify3D softwares. Press question mark to learn the rest of the keyboard shortcuts. Not perfect examples but illustrates my point. I'm making a feature ticket (CURA-3598) and we'll see what the planning allows. {hole_xy_offset} Hole Horizontal Expansion: Amount of offset applied to all holes in each layer. I have done tests with this by adding 2 stl's. to your account. Is there a way to achieve this in Cura, even maybe with a plugin? Initial layer thickness. Ender 3 Hatchbox PLA, 1.75 mm Layer Height: 0.2 mm Line Width: 0.4 mm Test model is a two walled cube, w/ 0.4 mm walls. In this article, we explore the main Cura support settings and show you how to optimize them to best support your overhangs. Within the Quality area of the Advanced section we do not increase the initial layer thickness but we do increase the initial line width to 110%. Feature Request: Horizontal Expansion on Initial layer. Adjust initial layer horizontal expansion We adjusted the … What is this setting for? First layer: It's a good idea to have a first layer height of 0.24. nallath changed the title "Horisontal Expansion" dicrees thickness of Thin wall with one layer. I suspect this may be happening actually. Have a question about this project? the squashing action makes the line width wider and it ends up wider than the actual parts dimensions. I have an elephants foot of about 0.16 mm. The Elegant Way: Horizontal Expansion. We don’t want that. Ultimaker Cura; Print settings; Support settings March 16, 2020 11:56. There's nothing Cura can do about that. Read our easy-to-follow in-depth Cura tutorial to explore the hidden features and settings of the Cura slicer software - that’s where the fun really starts! This feature has the exact same effect as horizontal expansion, except that it is only applied to the layer printed on the build plate. Print Setup Profile. How could I fix this? Thanks to all who made this happening. One of the most common problems I see people having is with adhesion. Our product manager just said we aren't going to do this. Read our easy-to-follow in-depth Cura tutorial to explore the hidden features and settings of the Cura slicer software - that’s where the fun really starts! /r/3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing. 700) Ez segít(het) az első réteg extrudálásakor, megnövelve a méretpontosságot. It'll happen on most solid vs non-solid layers. Apparently the planning didn't allow it. This. Bump. Enabling this option keeps those parts which cannot be stitched. The layer will stick to the bed very well and it can compensate a little bit for an uneven bed. Unfortunately this results in an elephant foot. Cura first layer settings are the settings that allow you to adjust the initial layer height and line width. Elephant foot is a prevalent issue when 3D printing, and it would nice to surface the valuable ability address it in a more intuitive manner. Maybe this can be compensated with an negative initial layer horizontal expansion. My walls are usually 0.1-0.2mm thicker at the bottom 5 layers than the rest of the layers, with the 2nd, 3rd and 4th layers being the thickest. Any time I set the 'Initial Layer Horizontal Expansion' to a negative value, my print is unchanged. Ah, I see. But you would accept a proper pull request if someone from the community does it, right? … Report Save. Help. Ajánlott a vonalszélesség értékének a … The only problem is that elephant's foot isn't isolated to just the first layer, it affects several layers above the first one. In Cura 4.6 there will be a "horizontal expansion" that only applies to holes. Horizontal Expansion: 0 mm Initial Layer Horizontal Expansion: 0 mm Hole horizontal expansion: 0. so that it cuts more off the side than the bottom. The squish factor that helps make prints stick to the glass also leaves the print with a sharp edge on the bottom. Pictures shown are print placed upside down. We set our retraction speed to 10mm/s and our distance to 1.5mm. I'm attaching my project file in case anyone can take a look. I could "fix" this problem by setting this setting to -0.1, but I'm guessing something must be wrong elsewhere in other setting. New comments cannot be posted and votes cannot be cast. the squashing action makes the line width wider and it ends up wider than the actual parts dimensions. I printed the 20mm calibration cube with (-0.5mm, -1.0mm and -2.0mm) settings and all three cubes came out identical still with the foot. A thicker initial layer makes adhesion to the build plate easier. Layer Height Shell Wall Thickness Wall Line Count Top/&ottom Thickness Top Thickness Top Layers Bottom Thickness m Layers Horizontal Expansion Infill Infill Density Infill Pattern < Recommended Off On Grid Ultimaker Cura Ultimaker Cura Ultimaker Orig inal Generic PLA PREPARE PREVIEW MONITOR Fine - 0.1 mm Print settings Profile Search settings merged the 2 stl's and got a print with a square edge on the base. Is there any other known settings that interfere with this setting? Allow a g-code to be inserted before or after pausing Burying this behind buried tooltips subverts the potential user value here. Expansion (Elephant Foot) Donc,les impressions reprennent Jour de congé oblige,jen ai profité pour faire quelques essais … this will make it effect more layers while not cutting super deep into the first layer twords the center. Layer Height Shell Wall Thickness Wall Line Count Top/&ottom Thickness Top Thickness Top Layers Bottom Thickness m Layers Horizontal Expansion Infill Infill Density Infill Pattern < Recommended Off On Grid Ultimaker Cura Ultimaker Cura Ultimaker Orig inal Generic PLA PREPARE PREVIEW MONITOR Fine - 0.1 mm Print settings Profile Search settings See the 3D printed Fallout 4 T-60 Power Armor model below. Successfully merging a pull request may close this issue. Link to post Share on other sites. Ender 3, generic PLA, 190ºC, bed 55ºC, 0.2mm layer height, 0.4mm nozzle, print speed 65 mm/sec. Posted by 1 day ago. More often than not, the initial layer height is thicker than the remaining layers to create a stronger bond to the build platform by laying down a bit more plastic onto it. It's kinda the opposite of brim. This model was tested in Cura 3.3.1 and printed on an Ultimaker 2 in PLA material. It's to compensate elephant feet. Hole horizontal expansion If you could adjust the horizontal expansion and enter a - amount (eg -0.3) then this will remove the sharp edge and make the print square on the bottom. It would be nice to be able to gradually transition from an initial horizontal expansion to the normal value over the course of several layers or a set height. This limitation can be compensated for with the "initial layer horizontal expansion" setting, which is found under the Shell category. View Entire Discussion (1 Comments) More posts from the Cura community. A value of half the line width is advised. Cura 3.5.1 settings for an Ultimaker 2+ George Gollin, University of Illinois, October 23, 2018 . In the picture below you can see all the elements an object is made of. There are many ways to deal with elephant foot though, and initial layer horizontal expansion is not usually the best of them. Adjust initial layer horizontal expansion We adjusted the initial layer horizontal expansion for some profiles. The more squash the stronger it sticks to the glass. It was fairly trivial to implement. Initial layer height determines the first layer height of your print. El ajuste de expansión horizontal (Horizontal Expansion) te permitirá ajustar el tamaño de tu impresión 3D en la dimensión X/Y para compensar el cambio de tamaño que ocurre cuando el plástico se contrae a medida que se enfría. A negative value can compensate for squishing of the first layer known as "elephant's foot". Please share your improvements to this profile so we can all be on the same page. Great. By clicking “Sign up for GitHub”, you agree to our terms of service and La expansión horizontal es uno de los ajustes de Cura que están ocultos por defecto. Cura does have a setting for initial layer horizontal expansion that is seperate from the same setting for the whole print. Minimum Skin Width for Expansion Il Il Material Initial Layer Flow Enable Retraction Retract at Layer Change But if you use horizontal expansion more as horizontal contraction on the initial layer you can remove the tiny brim or sharp edge. the initial layer is designed to squash onto the glass. If you want a more sturdy base for your print, you can make the initial layer thicker. Positive values have a clear and measurable affect. then use the chamfer tool on the edges that are on the bottom of your item. Any help is appreciated! So make sure you adjust the speed for the first layer, preferably to a lower value than the default one. Initial layer horizontal expansion: Ez a funkció ugyanolyan hatással van, mint a vízszintes expanzió, kivéve, hogy csak az alaplemezre nyomtatott rétegre vonatkozik. The following is the Cura 2.5 profile I use for the Anet A8. Let's test that theory. Feature has been implemented for Cura 2.7. Well, that could help. Currently I'm printing PLA+, 0.2 mm layer height, with a two walled calibration cube from TeachingTech. The text was updated successfully, but these errors were encountered: That's basically what Brim does, isn't it? You won't be able to send a print to that printer, but you could slice for it and store the g-code elsewhere. This can be compensated for with a lot of glue spread on the bed, but w… the initial layer is designed to squash onto the glass. A cutting mesh is any mesh for which you set the mode to Modify Settings For Overlaps and turn off Infill Only. The support brim adds a number of concentric layers on the inside of the support structure on the initial layer, similar to the model brim. Bonjour à tous, Jai reçu et installé un nouveau ssr de compet,qui lui reste à 30° sans radiateur , même aprrès 4h00 dimpression avec un lit chauffé à 110° ..et toc ! 12. Pictures shown are print placed upside down. Usually not an issue but when printing gears they don't mesh properly. One showing the sharp edge the other was with my modified horizontal expansion settings set to -0.3. best way to do it is to load the file into Fusion 360. It's also not a complete solution since it will not apply to inner circles that have an opening on one side, but it will be an effective compensation measure for screw holes and the like. It improves the adhesion of the support material to the build plate, improving its reliability. 8. If you print a part with skirt selected, you end up with a tiny brim from the squashed initial layer. this will effect all of the layers. Convert the mesh to Brep. Reduce it in small increments and run a few tests before printing your model. {xy_offset_layer_0} Initial Layer Horizontal Expansion: Amount of offset applied to all polygons in the first layer. If you print a part with skirt selected, you end up … I have the feeling it's just the Z nut being loose on the Z screw and just bad tolerances... You can use a cutting mesh to overlap with a couple of layers and set the horizontal expansion differently on the cutting mesh. Line width Based on the line width, the extrusion rate is adjusted, which means that it will automatically calculate … This compensates for Elephant’s Foot, a small defect where the bottom of the print has a little ridge where it is molten to the build plate. you can even select it such that the chamfer is not at 45 degrees to the two surfaces. Initial layer horizontal expansion. The more squash the stronger it sticks to the glass. Chuck shows you how to get Accurate 3D Prints using Horizontal Expansion in the Cura Slicer. Sign in THESE SETTINGS ARE FOR PLA using a Heated Bed with a 3mm glass surface covered with a thin layer of PEI. ... the nozzle is a little "too close" to the glass which gives the bottom layer a little micro brim and is fixed with the "initial layer horizontal expansion" set to a negative value. In Cura, the Horizontal Expansion setting allows you to set a compensation value for the aforementioned print “fatness”. This issue can be closed. If you’re squashing your initial layer, make sure you first use a reasonable Initial Layer Horizontal Expansion to eliminate elephant feet. Normally Cura tries to stitch up small holes in the mesh and remove parts of a layer with big holes. Printables Buyer's Guides Basics Reviews. Printers that are temporarily offline (but previously added to your account) will also be added to Cura. You can compensate to a degree with settings, but better to get the temps and flow right. it's great for 3dprinting models that are "print in place" or otherwise have moving parts. Cura when printing the first layer prints the outer wall, then tries to print the circles inside the outer wall. You can also tell Cura to reduce flow on the first layer which may help. Do you mean that the Z axis needs to pick up some slack before it starts to move, so all lower layers are "crushed" a bit? Add setting to change horizontal expansion for layer 0, Add a setting for Horizontal Expansion for the first layer. Maybe Initial Layer Horiz. One showing the sharp edge the other was with my modified horizontal expansion settings set to -0.3. This is located in advanced settings in Cura and refers to the thickness of your very first layer on the print bed. You signed in with another tab or window. I'm trying to tweak and calibrate all my profiles after a SKR Mini board install. More . Your z axis is binding, at least that has been my experience. Z Seam Alignment: User Specified Z Seam Position: Back Z Seam X: Average length of your printer’s plate (e.g.”150” if your plate is 300mm on the X-axis) Z Seam Y: A value higher than the length of your plate on the Y-axis (e.g. Initial Layer Speed: If this option is set to a high value, the filament can get stuck to the nozzle and it will be dragged everywhere. I have ran into this before and haven't been able to find a solution. No. Expansion - makes elephants foot worse. Not perfect examples but illustrates my point. This would allow a more aggressive initial layer and not distort the prints base to get strong adhesion. Regarding the "initial layer horizontal expansion", it's set to 0. The only problem is that elephant's foot isn't isolated to just the first layer, it affects several layers above the first one. Already on GitHub? On the per object settings menu on the left. Cura 4.8.0 - Initial Layer Horz. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Cura has a setting called "Initial layer horizontal expansion" which is supposed to help with Elephant's foot. This can effect parts that need dimensional accuracy like an internal threaded hole and it makes the part sharp on the bottom. And then I tend to look at the build plate temperature and cooling. But if you use horizontal expansion more as horizontal contraction on the initial layer you can remove the tiny brim or sharp edge.
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