What am I doing wrong? I have the current Bambu Studio version 01. 026 on first. Thanks!Bambu Studio is an open-source, cutting-edge, feature-rich slicing software. Bambu Lab P1 Series. It's a fork of Studio and has many more settings including the ability to save the "k-value" to the filament profile. Bambu Lab X1-Carbon. It does not appear this MQTT Broker requires a client certificate so it can be left blank. 9996 (Edit1: was 1. 3. ago. [deleted] • 3 mo. 02) setup. Thus, Bambu Lab claims that the new 3D printer works right out of the box. Trying to calibrate Bambu Lab’s TPU95A pressure advance with Orca Slicer like I’ve done for other filament types in the past but this time every line looks the same. I was wondering if pressure advance calibration makes any difference, as I can't see any notable difference with either the line or. Add a Comment. What is everyone's experience with Bambu Lab's basic PETG? I find the basic filament profile with basic settings on the X1C result in poor quality prints, even on silent mode. OrcaSlicer Arachne PETG-CF Tuned from Bambu PETG-CF defaults, 0. Dynamic flow. With the new Bambu Lab P1P, it has never been easier to 3D print your dream and. Hmm the great bambulab needing calibration, doesnt seem to bambu if thats the case. Then you can start doing other tuning. 1 layer height. I think Bambu Lab has shaken up the 3D printer consumer market in a way it badly needed, but some of the humility shown during the Kickstarter would be a welcome sight again. 1 Like. Pressure advance aims to reduce these artifacts by adjusting filament feed speed before the print head changes speed. For whatever reason lidar/auto calibration was useless but when I switched to SoftFever and did it myself manually it worked much better. The color touch screen is nice, but I rarely use it with handy and the computer, and you can't add that either. 4 comments. Bambu Lab P1 Series. absolute flow compensation calibration. Bambu Lab Software. Cool Plate. The active vibration compensation (XY) algorithm and pressure advance guarantees extra smoothness and gets you good prints. The active vibration compensation (XY) algorithm and pressure advance guarantees extra smoothness and gets you good prints. Two totally different subject. 2nozzle pressure advance? I found that no matter whether I use manual mode (line, pattern), it always uses a line width of 0. Already have an account? Sign in to comment. Starting with the X1 series, Bambu Lab builds state-of-the-art 3D printers that break the barriers between. Absolute flow compensation calibration is used to calibrate the absolute flow ratio: “how far should the extruder motor rotates for 1 mm^3 of filament”. I use the Orca Slicer variant of Bambu's slicer because it offers finer-grained control over the slicing process and makes tuning and using tuned filament profiles much easier than Bambu's official slicer, which lacks good calibration routines for some of the most important variables in good printing: flow rate, pressure advance, and. So printing at 0. The A1 mini is priced at $299 USD, and AMS lite is priced at $249 USD. Bambu Lab P1P The Printer for Every One. So much variation from filament to filament that we’re usually just. Question on Setting Pressure Advance. Updated Oct 15, 2023. Until I did. Aurora Tech. I’ve used the SUNLU PLA+, but not on my X1C yet, it’s nice stuff. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. Most PLA is at 0. Render Black Bambu filament as #111111 - So we can see the geometry. Right off the bat though, I’m thinking experimenting with the extrusion multiplier and pressure advance will be key. PRESSURE ADVANCE TEST - ORCA SLICER | Download free 3D printable STL models. Print fast with exceptional quality Cutting-edge control algorithm with the help of vibration compensation and pressure advance, bringing you lightning-fast print speed without compromising on quality. Direct-drive Extruder With the design that the motor is directly connected to the extruder, P1 series has better control on the extrusion and retraction of flexible filaments. Unfortunately, the 0. Sgt_Hindsight October 20, 2023, 7:05pm 1. manually input pressure advance into the filament I’m calibrating. 949/0. The A1 mini revolutionizes flow control in 3D printing. Thanks in advance for any thoughts. Instead, it calibrates pressure advance only [source needed]. The active vibration compensation (XY) algorithm and pressure advance guarantees extra smoothness and gets you good prints. megaismo • 5 mo. Bambu Lab X1 Series. 1920×3413 405 KB. First abs print on my x1c. It also supports Anycubic, Anker, Creality, Prusa MK3S, RatRig and Voron printers. I've set max volumetric speed to 20mm 3/s (that's a conservative value, the results are still good at a higher value), pressure advance to 0. The A1 mini arrives pre-assembled, pre-squared, and pre-tuned. It utilizes a high-resolution, high-frequency eddy current sensor to measure the pressure in the nozzle. Edit: slower acceleration, slower speed. 025 seconds. The K-factor tells the printer how much to compensate for the delay I described - too much, and the printer starts to increase or decrease extrusion before the print head speeds up or slows down. I use the Orca Slicer variant of Bambu's slicer because it offers finer-grained control over the slicing process and makes tuning and using tuned filament profiles much easier than Bambu's official slicer, which lacks good calibration routines for some of the most important variables in good printing: flow rate, pressure advance, and. PETG . I don’t have a P1P to know how to inspect or set that value. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. 9:18. 018 L1000 M10 ; Set linear advance yo 0. In the OrcaSlicer Github ( Calibration · SoftFever/OrcaSlicer Wiki · GitHub ), you can calibrate your pressure-advance-value for a given filament. Turned out, the flow ratio needed. the slicer always get stuck at 65% during. JoePunker. For the life of me I cannot get adhesion on the textured plate with PLA Pro. Premium Powerups Explore Gaming. As the latest entry-level product, the mission of the Bambu Lab A1 mini is to bring high- end, state-of-the-art features to beginners, ultimately attracting more people to the world of 3D printing. like pressure advance, input shaping, and all the other stuff that’s needed to make a printer go fast. 0) Enable pressure advance: Check. I recommend that you first use the temp tower to find the best temp for the filament and set that in the filament settings. uncheck l"Slowing printing down for better layer cooling". LIDAR scanner that provides bed level scanning, extrusion flow control calibration(i. 500mm/s Bambu Lab P1P 3D printer: Another atomic bomb to tthe 3D printing industry, In-depth review. Bambu Lab P1シリーズは、フラッグシップモデルで実績あるモーションコントロールシステムを引き継いでいます。最高速度500 mm/sでプリントし、ゼロから500 mm/sまでの加速はわずか0. Bambu Lab P1P 3D Printer. 13 with the Dynamic Flow Calibration on the P1P with AMS should work. I’ve noticed, that this calibration largely resembles the “Cali”-Test on the. Even my Bambu Lab filaments (2 of the 4 I dialed in) were out by a very small margin, the Eryone and Geeetech filaments were way out For the best fine-tuned results, it’s still better to print calibration prints (now available in Bambu Studio 1. PRESSURE ADVANCE TEST - ORCA SLICER . Please read the original question before responding. PXL_20230723_154214245 1920×3413 391 KB. The P1 series inherits the proven kinematics and motion control system of the Bambu Lab Flagship printer. harryson2101 November 3, 2023, 10:21pm 35. Attempt 3: Print bed at 90 degrees, glue stick, and 8mm brim. October 14, 2023. With respect to advertising, we and selected third parties, may use geolocation data and identification through device. If you are printing PLA, chances are the values you get will be the same as the defaults. add to list Tags NEMA-17 1:4 step-up. 95 0. 6 hours 「Air Command Tower - Wireless Charger」 Model created by @30 3D Print - YouTube Highlight Overview AMS lite Print Multi-Color Full-Auto Calibration No Manual. The active vibration compensation (XY) algorithm and pressure advance guarantees extra smoothness and gets you good prints. Over a million Canadians count on LifeLabs for the information they need to make decisions about their health. Bambu Lab P1P: Tradeoffs. Orcaslicer 1. Set up in 15 minutes. PXL_20230723_154214245 1920×3413 391 KB. This information helps to provide vital information. Lidar also makes pressure advance easier, but you can't add that. It utilizes a high-resolution, high-frequency eddy current sensor to measure the pressure in the nozzle. The active vibration compensation (XY) algorithm and pressure advance guarantees extra smoothness and gets you good prints. 1920×1920 280 KB. #5 Created using Prusa’s PETG technical data sheet but with pressure advance of 0. Bambu Lab (BL) did a good, easy guide here, and it must be done properly before you will get good prints, take your time and do it right, everything else depends on this being right, it’s quick: Bambu Lab Wiki Manual Bed Leveling / Manual Bed Tramming. image 813×1039 38. really appreciate you pointing me in the right direction. 1 by default, I found that I needed to look been 0. This parameter is much harder to calibrate than the dynamic one. I bought Bambu PETG Basic black, used standard profile for PETG from Bambu Studio - Bambu PETG Basic and printing result is horrible. The printer would then print a few lines then scan them to calibrate the flow rate and pressure advance value according to that filament. I’m new to 3d printing. I wasn't sure I was going to buy this P1S. The speed of a wall with no feature is 146 to 155 with a. 70. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. Most 3D printers have filament runout sensors to detect the presence of filament. Here we discuss everything related to Bambu Lab 3D printers. This was at 260C temp. Welcome to Bambu Lab! Here we discuss everything related to Bambu Lab 3D printers. Before saying the E-steps are off take a peice of masking tape, put it on the rail next to the head then move the head 100mm and measure then you will know 100% if its off or not. First chance to look at Flow Rate / Pressure Advance variation from spool to spool with same vendor, same color, and same X1C. Tried the temp tower for the Overture PLA and the results for 190-230 deg all look similar to me, overhangs and ‘minitowers’ (whatever they can be called) and all looks pretty similar at all levels. Direct. Bambu Lab X1 series automatically calibrates the extruder for precise linear advance flow control---------------------An important challenge for high-speed p. 0 coins. The active vibration compensation (XY) algorithm and pressure advance guarantees extra smoothness and gets you good prints. failed-print. I calibrated these filaments on the cool plate and the high temp plate, depending on the filament type. froboz March 1, 2023, 3:36pm 143. After many failed prints with stringing and blobs I ran the Orca slicer pressure advance calibration which told me to use 0. Troubleshooting. Upgradeable and Customizable . Explore its unique features, customizable design, ecosystem, and how it compares to other models. To compare the x1c with the mk4 you need to add the mmu3. Troubleshooting. Discover the Bambu Lab P1P, a 3D printer that blends high-speed precision with affordability. Try leaving the abl and flow tests enabled before the print in Bambu slicer and it'll probably resolve the issue. The Bambu lab PLA sample that came with the printer was 24m㎥ /s if I remember correctly. BUT You’ll find you must compromise as they’re rarely both the best. Problems: Blobs of filament on. The P1 series inherits the proven kinematics and motion control system of the Bambu Lab Flagship printer. Yes, you can calibrate flow and Pressure Advance. First chance to look at Flow Rate / Pressure Advance variation from spool to spool with same vendor, same color, and same X1C. 3. I calibrated these filaments on the cool plate and the high temp plate, depending on the filament type. Also, if you're enabling the "Flow calibration" at the start of the print and using a textured plate then the printer will probably calculate the wrong value for the pressure advance. Hopefully Bambu lab, in future, can modify their code in order for the LiDAR to calibrate flow as well linear advance. I have Bambu Lab P1P printer. They appear to execute the entire print at the same K value and flow rate. Model on the left has PA set to 0. basti. How to reproduce. dudely82. 02. X1 Carbon Power Failure issue. Note on PA /Linear advance: 0. If you search in this SubReddit and YT you'll find that the problem is mostly solved, the flow calibration works on the textured plate. High Temp and Textured plate temps: 60 for. This is a function enhancement version based on 1. k77 March 6, 2023,. Bambu Lab github releases. Hi everyone: In our road map, “flow calibration” has two parts: dynamic flow compensation calibration. You want to pick a value for your filament that gets your printer extruding the right. bambu-studio. 0 coins. By default it homes the bed and levels it; checks structural resonance of the printer to cancel it; and calibrates input shaping and pressure advance for extrusion. I did the. TPU Typical Pressure Advance Setting. bambu-studio, bambu-firmware. 05 and turning off the slow down for overhangs. 1 / 3. I keep seeing posts of problems with prints and often the answer lies in understanding the settings or simple Calibration. Thomas Sanladerer. To be clear, Bambu suggests neither textured sheet works with LIDAR. Welcome to Bambu Lab! Here we discuss everything related to Bambu Lab 3D printers. 949/0. I've been doing a whole lot of testing and have found that the linear advance/pressure advance calibration is actually causing the massive seam/blobs at. json file) and printing acceleration in Bambu Slicer. 01, 0. Note: printed with Flow Calibration checkbox unchecked. I have Bambu Lab P1P printer. . I was wondering if pressure advance calibration makes any difference, as I can't see any notable difference with either the line. My suggestion is that for your next Slicer update release you adapt these fine tuning settings into the Bambu Slicer as I found all 4 filaments were off regarding flow rate and pressure advance for my particular X1C. The active vibration compensation (XY) algorithm and pressure advance. failed-print. schmitzna August 22, 2023, 12:40pm 1. Power Cycling the printer did the trick. Here are the results I got. The P1 series inherits the proven kinematics and motion control system of the Bambu Lab Flagship printer. Yes, you can calibrate flow and Pressure Advance. . 025 seconds. Yes, you can calibrate flow and Pressure Advance. OS version. 018 L1000 M10 ; Set linear advance yo 0. It does something more like pressure. Here you will find various tips and tricks for using the printer. 9:18. The printer is designed for multi color of the same material, or for the use of support materials, not mixed materials. I stopped the printer before the top layer was printed. 029, Edit2: was 1. My understanding is that the automatic flow calibration isn't actually determining the filaments flow ratio, but is actually determining the pressure advance for the filament. Premium Powerups Explore Gaming. 002x8 = 0. TPU Typical Pressure Advance Setting. Examine each corner of the print and mark the height that yields the best overall result. My only experience printing flexible filaments is with TPU, which I print quite a lot, mostly Overture brand 95A. 7 KB. The answer is correct - you cannot do traditional X and Y steps calibration on the Bambu printers. Orca also has calibration tests including pressure advance. I’ve had the printer for. 15 minsRight out of the box 16 Colors Multi-color Capability Expand printing possibilities with Bambu Official Enclosure CoreXY up to 20000 mm/s² Acceleration Vibration Compensation & Pressure Advance Direct-drive Extruder Succeed with a Perfect First Layer Connect. The inclusion of advanced features like input shaping, pressure advance, and automatic material transition compatibility with Bambu Lab's. AcidByte June 23, 2023, 7:43pm 1. They look like waves. It only allows you to set pressure advance for the very limited list of materials that are listed for the AMS, and you are completely unable to set pressure advance values for any other material or brand. Vibration Compensation & Pressure Advance. That was how I found. As the latest entry-level product, the mission of the Bambu Lab A1 mini is to bring high- end, state-of-the-art features to beginners, ultimately attracting more people to the world of 3D printing. M April 11, 2023, 4:49pm 9. ABS Bambu Green (40500) ABS Blue (40600) ABS Purple (40700) ABS Black (40101)The 0. 15 minsRight out of the box 16 Colors Multi-color Capability Expand printing possibilities with Bambu Official Enclosure CoreXY up to 20000 mm/s² Acceleration Vibration Compensation & Pressure Advance Direct-drive Extruder Succeed with a Perfect First Layer Connect. Hello everyone, I printed TPU95A from GEETECH for the first time. The auto pressure advance, input shaper calibration and z offset are all nice though. Also new batches with the same. Turned out, the flow ratio needed to be at 1,045 and pressure advance at 0,036. Download. custom g-code? It's also in Bambu Slicer, on the device page, bottom right where it says "Cali, Unload, Load" hit cali, it will print, and you can set the K-factor. Purchase a printer and enjoy 6 months of Bambu Filament Membership benefits! Product Features. This does not actually calibrate flow, according to Bambu Lab. What you saw may have been Orca-Slicer, a fork of Bambu Studio, which can store Pressure Advance settings (aka K-factor) for each filament profile. with each new filament. 020 - . Bambu Lab X1-Carbon. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. Our algorithm actively compensates the flow rate according to the readings to extrude with accuracy. It utilizes a high-resolution, high-frequency eddy current sensor to measure the pressure in the nozzle. Fully enclosed body which improves print performance for advanced filaments. Holter Monitoring. I wish, Bambu Lab will merge this back to Bambu Studio in the future. Our algorithm actively compensates the flow rate according to the readings to extrude with accuracy. Thomas Sanladerer. I’m seeing a lot of extra material in prints, probably due to poorly tuned. If you want to make the compensation linear like in Marlin, you can modify the start-gcode: Before “M900 Kx. Upgradeable and customizable to make your unique printer. Bambu Lab Community Forum Can't get PETG to stick on the Engineering plate. – Rapid print speeds of up to 500mm/s with acceleration up to 100,000 mm/s². N… Total newbie, this is my first 3d printer I got and PLA Basic and PLA-CF printing were perfect out of box. With Orca Slicer, I ran a Pressure Advance line calibration with a range of 0 to 1 and I finally see a progression in the lines. The SF fork tends to get numerous minor little features and updates while also still having everything from BS. Don’t think Bambu Studio ever had it. The Bambu Lab P1P inherits the proven kinematics and motion control system of the Bambu Lab Flagship printer. 2023) and it appears the pressure advance and volumetric flow tests dont actually do anything. set pressure advance and chamber fan with two gcode line : M106 P3 S51 ; turn on chamber fan 20% M900 K0. High-speed Precision Bed Slinger with CoreXY- Speed And Quality Full-metal Rails, Rigid frame, nozzle pressure sensor, accelerometers, powerful MCU, and above all, an advanced motion control system that utilizes these features to print a 14-minute benchy with quality and following all the speed benchy rules straight out of the box without using. Pressure Advance Sanity Check. TPU Typical Pressure Advance Setting. r/BambuLab • 3 mo. megaismo • 5 mo. When executing a flow rate cmd, the printer will do a fast extra extrusion to generate the pressure as fast as possible , to make the respond of the flow. I wish, Bambu Lab will merge this back to Bambu Studio in the future. Humidity inside dryer box is 29%. The printer also features vibration compensation and pressure advance algorithms that. 02. Active Flow Rate Compensation. Actually i think I found the issue. • 4 mo. Get your free Fusion 360 Constraints Cheat Sheet: Fusion 360 with my easy to follow online video courses at htt. bambu-studio, failed-print. I am slicing a model which i usually print in Prusa. It could also be Pressure Advance to having the right setting and thus underextruding when decelerating. i had some troubles with ASA and first layers being under extruded despite running flow calibration each time. 022 for PLA. – Quick. It’d be a nice addition to be able to see the currently applied Pressure Advance and Flow Ratio (not sure if that has been implemented yet? It was hinted at in documentation) values on the LCD display as well as in the “Device”. With Orca Slicer, I ran a Pressure Advance line calibration with a range of 0 to 1 and I finally see a progression in the lines. . Bambu Labs’ Mini A1 ships with advanced features like Active Flow Rate Compensation, Automatic bed level calibration, and pressure advance, and input shaping out of the box. Underextrusion. All of the other tests I've done with other filaments were in the 0. Go to the device tab and edit the K value (near the AMS setting). AcidByte June 23, 2023, 7:43pm 1. 025 seconds. 033. After doing the other two I tried. Print bed at 95 degrees and glue stick. In case of multiple nozzles, you must add the. 025 seconds from a standstill to full speed. 2. Great. The auto pressure advance would be cool if that could somehow be implemented. Maybe if the X1 brought the fan and camera, but adding those on makes it close to x1c anyways. k77 March 5, 2023,. So far, I am very happy with the printer. Well, I’ve had the Bambu Lab X1 Carbon for a little while now, and I’ve been working on understanding it’s strengths and limitations, as well as how to optimize prints for speed and quality as needed. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. 5mm 3 steps [c]. Direct. Our algorithm actively compensates the flow rate according to the readings to extrude with accuracy. Emaerceo August 1, 2023, 4:49pm 1. if you download and install the SoftFever fork, you can tune and set it. This parameter is much harder to calibrate than the dynamic one. Bambu Lab Community Forum Pressure advance. matthiasdeblaiser. 025 seconds. holmes4 April 1, 2023, 10:50pm 23. 026 on first. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. , , , , , Download: free Website: Thingiverse. Strongly suggesting that Bambu's PA-CF is this same product. V311 protocol should also be fine. I ran the pressure advance calibration, used it to set my pressure advance to 0. Bambu Lab Community Forum Small pieces of filament on the Heatbed. The flow was similar in sub 10% difference. This sensor allows the printer to automatically calibrate the flow dynamics, similar to pressure advance. The printer has a design that directly links the motor to its extruder. Q&A. Compatible with AMS for multi-color printing. For the best fine-tuned results, it’s still better to print calibration prints (now available in Bambu Studio 1. 6K views 2 weeks ago. Pressure advance should be set to 1 and the flow value should reflect. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. A little confused about pressure advance vs flow dynamics. Members Online • M3tl . Bambu Lab Software. Welcome to Bambu Lab! Here we discuss everything related to Bambu Lab 3D printers. State-of-the-art electronics, including vibration compensation, pressure advance, Wifi connection, and camera. Another optimization that is known to improve print quality at high speeds is a firmware feature known as pressure advance, and both the Creality K1 and Bambu P1P support this feature in their default firmware. holmes4 April 1, 2023, 10:50pm 23. calibrations you have to check and do the belt calibration (frequence) and then you can do additional flow calibration for best results. Bambu may be satisfied with this, because they only want you to buy their own filaments, but it is terrible for their customers. Get app Get. In summary, the Bambu Lab P1P inherits the advanced motion control system from Bambu Technology, enabling it to reach a maximum print speed of 500mm/s. Allow users to adjust the bottom surface flow-rate; Fix an issue that bed temperature for other layers is not set properly. bambu-studio, bambu-firmware. 03. Previously, the Bambu printers have been known for the tech that they utilized to get optimal first layers. Pressure advance adjusts the flow accordingly per acceleration / decelaration of the print head so that there is for example no oozing during slower movement e. but is actually determining the pressure advance for the filament. Active Flow Rate Compensation (Auto-calibrated Pressure Advance), precise extrusion at every corner. High Temp and Textured plate temps: 60 for. Bambu Lab X1 Series. PLA just needed pressure advance and flow rate calibration. This sets it apart from other printers on the market. Like . Aurora Tech. Here we discuss everything related to Bambu Lab 3D printers. I selected a height of 8 mm for this case, so the pressure advance value should be calculated as 0. 1 Like. My suggestion is that for your next Slicer update release you adapt these fine tuning settings into the Bambu Slicer as I found all 4 filaments were off regarding flow rate and pressure advance for my particular X1C. Darwinian999 X1C • 6 mo. 15 or above. Welcome to Bambu Lab! Here we discuss everything related to Bambu Lab 3D printers. I fully agree with that BUT it may be more complicated than that - for example, Bambu could use different suppliers for the exact same parts / same specs but still without in some situation different behaviors over time, and hence you may have some. JayZay September 12, 2023, 3:57pm 3. Bambu Lab is a consumer tech company focusing on desktop 3D printers. Are pressure advance and k-value same ting? Question I do a pressure advance calibration in OrcaSlicer and save that to my filament settings. 95 looked good. Way to find current calibrated k value and other pressure advance numbers on X1C, with either Softfever or Bambu Studio? Like the title says, is there a way to find out what my k value and other calibrated values are from my flow calibration on the X1C?. 168. A thorough self test is run after unpacking the machine to make sure everything is in working order. Welcome to Bambu Lab! Here we discuss everything related to Bambu Lab 3D printers. The new Bambu studio release over-wrote the machine definitions in Bambu studio (which also defines z-height for the nozzle depending on plate type). If you want to make the compensation linear like in Marlin, you can modify the start-gcode: Before “M900 Kx. Up to 20000 mm/s² acceleration!. Our algorithm actively compensates the flow rate according to the readings to extrude with accuracy. Turned on pressure advance to . Advertisement Coins. Bambu Lab Software. So far the Flow. Hmm the great bambulab needing calibration, doesnt seem to bambu if thats the case. Using the same motion control system of the X1 series, plus, the advanced sensors to ensure its reliability. It’s either calculated through the auto-calibration or set manually in your filament profile in your slicer. 02 and it also looks fine. That's how I know it has pressure advance 🙂. It prints with a top speed of 500 mm/s, the acceleration from zero to 500 mm/s takes just 0. Bambu Lab P1 Series.