Lightburn material settings

Lightburn material settings. Your file location of where you stored the library on your computer will not be the same as shown. LightBurn includes a number of tools to help you find the best settings for your laser. Open LightBurn, click Devices on the Laser. That’s what I meant, yes. After selecting your machine model from Falcon2 40W Laser Module. material-settings , mopa , fiber-galvo , stainless-steel. Aug 9, 2019 · Here’s a materials library file (rename to . If you want to contribute to this site, please register and add your fiber laser settings to help others. The usual diode lasers with relatively the same basic mechanics are designed for speeds up to about 5,000-6,000 mm/min. Mar 28, 2019 · LightBurn supports many different laser types so it is not practical for us to provide settings for each material type for each system we support. All 3 are important because settings change wildely depending on the answers. Since update to 1. Laser engravers and cutting machines such as the xTool D1 Pro require software to control their movements, power, and speed settings using a Computer Numerical Control programming language called gcode . Galvo. Bertus (oud) October 6, 2020, 2:46pm 1. Sep 24, 2019 · New laser user here. The text settings do the same except it’s set there speed/power for your text only. Normally when you save a LightBurn file that contains shapes, the output contains only the layer settings that were used by the design. EngPhil: mm/s as LB recommend mm/min. You load the library file into LightBurn and can apply the contained material settings in your projects if you’re planning to cut or engrave one of the materials described within. Better software for laser cutters. Jul 5, 2023 · Material Library - LightBurn Software Documentation. 10mm. Go extremely conservative on power. If you move quickly, or with low power, you will likely just etch the surface (sometimes called vector marking). The settings are very durable. Set the right Parameter on cutting or Engraving different materials. Stay tuned as I share my first successful cut setting. It's particularly useful for MOPA lasers, as finding the right parameter settings (this involves in power, speed, interval, frequency, q-pulse width, etc. Maybe together we can build a full list of common materials and usage. Subscribed. Then run a series of material tests above and below those speeds/power values to get a sense of how your machine performs and adjust from there. 00. jkwilborn (Jack Wilborn) March 11, 2023, 5:23pm 4. Aug 2, 2023 · Yes, it's possible to find the best material settings, no matter what type of laser you have or how much power it provides. Figure out how much material you have available for the interval test. I found a similar thread from back in August where it seems someone mentioned that this test can get stuck with a Library setting, so I created a Jun 10, 2022 · If you cannot find the original file, you can download again from Thunder Support site, then load into LightBurn as described above. That file is all of the settings for materials. Lightburn has a ‘material’ library that is very useful. Oct 23, 2019 · Lightburn has several useful inbuilt cutting tools. This is mostly, Titanium, Stainless steel, Steel and acrylic. Cool Tricks and Usability Tips. In this video, I will show you not only the three simple tests you Apr 15, 2023 · 86. Running test files to determine the best settings for your laser is the best approach. $2,259. system (system) Closed March 17, 2024, 3:50am 4. 3 Switch off the "Enable laser fire button"; 2. Switch on/off "Constant Power Mode" Switch on "Constant Power Mode" when processing a vector file, and switch it off when it is a bitmap file. com/channel/UCut_W8lZYTQJ4JF-Dx9c8Rgsci-fi and fantasy: https: Sep 26, 2023 · Click on "Material Test" under "Laser Tools" (Image 1). patricr (Patrick Rose) October 6, 2020, 4:00pm 2. clb) file. Full demonstration! Dec 28, 2023 · Step 5: Material Testing with LightBurn (Material Test) One of the most potent tools in LightBurn is the Material Test feature. Hello community, I’m hoping we can use this thread to share our different material settings, I just discovered the Material Library and this will be a great way to save my successful setting. Have a layer selected in your project, under the Layer section above. OMTECH PRO 2440. fireleather (Archie) December 1, 2020, 7:29pm 1. Please, do let us know how you progress. It shouldn’t matter, but is there for the convenience of the user. -. Then you’d set your focus normally Feb 17, 2023 · Go to Machine Settings and enable z-axis: [settings] After that you will see a new field “material thickness” in your "cuts / layers - window" [material thickness] Here you will have to enter “material thickness + 11mm”. Looking for the settings to cut 3mm (1/8) birch plywood. Jan 22, 2023 · I'm often asked what settings to use on various materials and lasers. Material Library - LightBurn Software Documentation. Atezr has reference parameters for machines with different wattages, which can be browsed in the material setting. 116K views 1 year ago. Dual Screw Rod Upgrade Kit for Ender-3/Ender-3 Pro/Ender-3 V2. ️ Click on Show More↙️for the *LASER RAFFLE* and other Links! *The Raffle you've all been waiting for! The LaserMATIC 20!* ️ https://lahobbyguy. 2. 6K. Calibrate the laser’s focal length for optimal beam focus on the material surface. xtool. Dec 23, 2022 · Lightburn Software Manual for xTool D1 Pro. Make sure that you start to configure xTool D1 Pro in this way instead of choosing Import Prefs from the menu. Aug 9, 2021 · A user asks for a printable version of the settings/material library in LightBurn Software, a laser cutting and engraving software. Feb 27, 2022 · The best way is to read about how people have done similar material and test it to find the best power/speed for you machine/setup. 1. When lasers are cutting patterns, diodes typically can go through thin materials such as wood or acrylic. With that layer selected, you should now see “Assign” under the library section, click on Assign to apply those settings to that layer. Look under menubar “Window” for library: It then may show up as a window or tab, depending on where you park it: Make sure you have your interface set to advanced Like and Subscribe!check out these other cool channels!Technivorous plays: https://www. Sep 2, 2020 · LightBurn (Oz) September 3, 2020, 11:14pm 10. This is entirely user-generated - You set up a cut layer however you like and save it to a Library. I was wondering if anyone could offer me any advice as to what settings I should use? Speed, power, number of passes, etc. Engraving and cutting materials are not limited to ordinary wood products, but can also be created on various materials such as acrylic, leather, metal, glass and so on. clb) based on Boss’ current recommend settings for 100W here: Mar 19, 2019 · The “Material (mm)” setting controls the “base height” for the Z axis when Z control is enabled. For all you newbies out there with a diode laser, I have made a step-by-step guide on creating a power scale to dial in your engraving burns. All of these settings are taken directly from EZCAD. To understand why it is not working, you have to understand why it did. Below you can see a description of each Image Mode in LightBurn, along with an example of how that mode changes the look of the example image. For better creation, we offer profession guide to you to use our laser engraver / cutter, hope you can make all your ideas come true! Maple Board. Open the File with Lightburn. You need to test on specific materials you are using. Spaarky2002 (Bryan) January 6, 2024, 6:09pm 1. We have a complete list here of all materials and The Settings window in LightBurn controls global user preferences for LightBurn - these are the settings that apply regardless of what laser (s) you set up. S value max = $30 S-value max is in the Device Settings and $30 is in the Machine settings. You can engrave almost any type of material but are most commonly used for metal, plastics, wood, leather, glass and acrylic. Apr 14, 2024 · What it Offers: The xTool EasySet Library enables you to quickly find the recommended settings for different materials tailored to your specific machine and processing types. Does anyone have a good place to start, regarding speeds, frequency, power ect. It is always a good idea to run tests on each substrate and update the library as necessary. Jun 16, 2023 · These files can be downloaded (original from hobbylasercutters. Software Lightburn Machine ComMarker B4 Mopa Fiber Laser Laser Module Output Power 60W Material Used Ceramic Material Info Ceramic tile Making Time(mins) 10. by Wyked » Thu Sep 07, 2023 12:35 pm. For example I often use 3mm basswood, then the setting is 14mm. Material Setting. Sep 13, 2023 · You have it. The Image Mode setting controls how LightBurn processes your image. When Ray5 has completed the job, reviewing the table will help you determine which parameters are best to set. Dec 11, 2023 · Before you configure xTool D1 Pro, download the configuration file first: xTool-D1ProV3. thanks in advance. Dec 16, 2023 · While it’s not a Lightburn library, you can begin looking over XTool’s material settings and building your own library from it in Lightburn. Closed lightburn and reopened next day and now settings have double for same pressed wood items. Do not import into Lightburn. Once you’ve selected and loaded your file for laser cutting. Jan 6, 2024 · LightBurn Software Questions. Once connected, you’re ready to start using LightBurn with your laser engraver. The window you see may vary from the screenshot, as different laser features, LightBurn modes (Beginner) or updates can change its appearance and settings. This link will help explain why stainless can obtain various colors. Aug 20, 2022 · How to use the Lightburn Material Test card with YOUR BASELINE SETTINGS. Spider V3 High Temperature and High Flow Hotend Pro. Instructions on Commonly Used LightBurn Features. Which is to say, there is no “best settings” that someone can simply hand Laser Parameter Converter. 06 Mode Jarvis Frequency 130 Q-pulse Width 30 Dec 27, 2020 · Community Laser Talk. Use some of the tools that are available withing Lightburn, such as the materials test. So after finding the manual online I created a library for Jun 22, 2022 · Hey out there. Feb 1, 2024 · Start with a moderate speed of something like 50mm/s. Here’s the lightburn documentation: Material Library - LightBurn Mar 7, 2024 · JTR (Tyler Raps) March 8, 2024, 5:18pm 3. If orientation is critical for this then perhaps use an external generator and mirror the design before engraving. 9. Galvo Docs. It takes time. Use LightBurn’s real-time monitoring view to track laser head movement and remaining time estimates. It’s the nature of the material and there isn’t much you can do about it. Jul 8, 2021 · Ash (Julian Ashcroft) July 19, 2021, 6:08am 4. Example Image. Our chosen starting values for this tutorial are: Laser Diameter = 0. Click on the image previews to see a larger version. Special thanks to David Christian! Author of the Shark! Laser Parameter Converter. Oct 18, 2023 · How do I set the material thickness in a material test? Unlike the layers section that has a box for thickness, I do not see it in the card settings. Also 3D Printer and CNCs 3018, Foxalien Masuter Pro 4040. Are there initial CUT settings = Use 0. com Material settings. In Lightburn, select the Window menu. Launch LightBurn and navigate to the “ Devices ” tab. 05 Dot width Enable Dot width 0. Unlike the tons of other videos out there who skip steps and explanations, this video will walk you through the entire process, start to finish. Find the ideal setting for your art work. The proper settings are the ones that work for the material you’re using, the image, the laser, your power supply and wattage, beam type, and so on. Sep 1, 2023 · Disable LightBurn’s automatic homing, because without homing switches on the machine, it cannot home automatically. additionally mounted to indicate the Oct 6, 2020 · LightBurn Software Questions. 2 Switch off the "Enable Scanning Offset Adjustment"; 1. Mar 23, 2021 · Just got mine yesterday, and few sample burns went well. LightBurn Bridge Docs. Atezr creates endless possibilities. Jun 27, 2021 · LightBurn Software Questions. 1500. Click on the GRBL device (it may be the only one) Click Edit. Dec 10, 2020 · LightBurn supports many different laser types so it is not practical for us to provide settings for each material type for each system we support. Z step per pass¶ When doing more than a single pass over a shape, the Z step per pass setting allows you to tell LightBurn to raise or lower the laser with each pass by some amount. youtube. com/lasermat Sep 9, 2023 · I don’t believe there’s any method of mirroring the in-built material test. Good day to everyone. Import material database Dec 23, 2023 · Falcon2 Pro 60W Enclosed Laser Cutter and Engraver Pro Safer. Origin is front left. Click on the “ Find my Laser ” button, and LightBurn will search for and connect to your Falcon 2. I am starting to get the hang of it. Engraving depth can vary between 0. 125″ in harder materials. 6 95. I recently purchased a 50w laser and have just started to use it in leather. All the text used on the dog tag were generated by Lightburn… the text settings are specific for the text. hello. Next, you will enter the Material Test Generator interface (as shown in Image 2). 16. Feb 16, 2024 · Look on the usb stick that came with your machine. When you read the process, try to imagine controlling it with your laser. Here’s a video that covers it: How to use the Lightburn Material Library to manage cut settings - YouTube. Hey guys. Jun 8, 2023 · Using 20W diode w/xTool D1 and Lightburn updated 1. Lightburn Software. You may need to run multiple tests, so keep that in mind. Then click “assign to layer”. Recently got a Monport 40W (K40 with LB board) and am going through testing various materials to build my library. No matter what I select under Edit Materials > Line Interval, the Line Interval in the preview (and the burn if I run it) never match. MDF. Step through the various dialogs until you get to this one: Flip that switch Off and continue onward to update the . I am wondering if there is a good list of recommended power and speed settings for different materials and thicknesses. Ceramic Heating Kit ( For sprite extruder) Creality WIFI Smart Kit 2. Atomstack material setting for different machines, process and materials. The Pulse [ns] settings are for MOPA (Master Oscillator Power Amplifier) fiber laser only. Thanks in advance. Note: Make sure that you start to configure xTool D1 in this way instead of choosing Import Prefs from the menu. Since our goal is to determine the appropriate speed and power for engraving or cutting, select "Speed" for the parameter in the Focusing deeper into the material can sometimes help to cut thicker material, and lifting the laser away from the material can produce a thicker line. Also using a rotary axle. How to Use a Material Test Card: 1. Sprite Extruder Pro 300 Aug 26, 2022 · Select the category of material, then step your way through the submenus to the exact process (cut, engrave, etc). TateR (Robert Tate) May 8, 2019, 4:56am 4. The Pro Line CO2 laser machine comes equipped a built-in water chiller and ultra-fast laser engraving speed with maximum precision. I also bought a laser vevor 60wat. Let’s say 15%. That lets you decide what mode you want the test grid set to Image Mode ¶. $2,659. 400 500 35 35. Ender-3 V3 SE Ultimate Accessory Pack. The Material Library contains 20+ PRESET settings to cut and/or engrave on 20 different materials of varying thickness. 0 with Camera and 8G TF Card. Get my cut settings files here: https://wasatchlasercraft Select the tab of the material you want to know about, and you will get the recommended parameters for setting, including power, speed, and process. Cutting. Buy Him a Coffee if you appreciate his hard work! 100% FREE Laser Settings and Parameters for Fiber, CO2, UV and Diode Lasers! Find settings for any laser engraving machine. Jun 9, 2023 · An update shouldn’t have changed the laser output. While I can give an estimate based on my experience, what you really want to do is run Feb 20, 2020 · Within Lightburn there is an area that material databases can be imported. If you save a LightBurn file with no shapes in it, the system saves every layer, and this is what we call a settings template file. The Atezr breaks the creative boundaries of traditional diode laser engravers. 1 Switch off the "Enable pointer offset"; 1. You will, in all likelihood, have to adjust them anyway. You can edit the entries in your library at any time. See the screen shot of the user's attempt and the reply from another user. Here, you can configure the parameters you want to test. Some pictures of the tests & results, plus screen shots of the setups, will help enormously in figuring this out. If you can't find a 40w one, try a 30w as a starting point, not a great deal of difference. 1 Like. redneck: plastic just burned and melted instead of the clean white I got during the testing. com/?aff=3In this Lightbu Feb 7, 2022 · Learn what the Lightburn Material Library is and how to use it to save and manage your cut settings. Make sure in Edit>Device Settings>Basic Settings are set like screenshot, eg: S-value max 255 and Baud Rate is set to 115,200 and other settings set as indicated - See below; Jul 30, 2023 · Monster871: i get colors and they look good, but when i try to use the settings for the color on the test, it doesn’t mark in color. （Image 1）. Those settings should be considered a starting point only, the only way I have found to create a useful material library is to do the leg work and complete a material test for every medium that you are using, It is time consuming but well worth it in the end May 30, 2023 · On the Edit Material Settings screen, since this is an engraving, select Mode Fill: Once back on the main screen, press Save Gcode to export the test file, copy it to the microSD and start testing on Longer Ray5. Nov 24, 2022 · It is very precise and is often a good option for people who want to personalize or customize something. Use the Library window to Load the . Initial settings: 1. Mar 6, 2024 · 60W Omtech 60w Fiver MOPA Settings for Color Can't Find. LightBurn For CO2 Laser. Mooseuk Sep 4, 2020 · Next, open Lightburn and select Snapmaker option in New Device Wizard, adding 330mm & 360mm for X&Y axis lengths respectively (for A350). If you move slowly and with high power, especially Oct 29, 2022 · jbrown123 (James) November 6, 2022, 6:23pm 24. There are several software packages out there that can interpret and perform these functions but Note that these files need to adjust the parameters according to the wattage of the machine and the materials used when creating. Run LightBurn, choose the JCZFiber laser, then click Edit > Device Settings (or click Device Settings on the Dec 4, 2023 · Align material precisely at the laser origin point so designs are engraved or cut in the correct locations. You can also import previous LightBurn Preferences settings by Sep 23, 2023 · ednisley (Ed Nisley) September 23, 2023, 12:26pm 2. Select a layer at the top, then pick a material, thickness, and cut from the library tab. Profile. Is there a wiki with common settings for various materials…or does anyone have experience with the material and can share their settings. Apr 1, 2022 · The factory default max is 6000 mm/min. Does anyone know how to find what settings are used on Lightburn material test text fields? When I print a material test the text “speed” and “power” labels are perfect but I don’t know settings, I don’t know a way to see it in material test screen. Specifically, for those of you using a Fiber Laser and Lightburn I am looking for a copy of that. To expedite manual entry, you can either run EZCAD and just flip through the Param (F3) pages for this, or take screenshots and use them for reference when setting up LightBurn. In this mode, the laser follows the exact path of your design, tracing the lines with the beam enabled at the power you've chosen. Click the tab in the lower right for the Library window. Download: Starting point Lightburn material libraries for Creality Falcon 2 40w. Open as project. But these are only guides. LightBurn (Oz) October 17, 2020, 6:21pm 3. Atomstack P7 M40-Dead and Atomstack A5 M50 Pro+ replaced module with M100 (Extension Kit, Air Assist and R3 & Chuck Roller), K40 Co2. 3: 1572: January 2, 2023 Oct 20, 2022 · I have been messing with the Lightburn Material Test for days and trying to figure out why I cannot get it to work. 60 Watt Materials Libraries. Download the card you want to use for the machine you plan to run from the File Download Links section of this article. By incorporating these settings directly into xTool Creative Space v2. A database is a list of material profiles that can be exported and imported if wanted to be used on other computers. There are a couple of Parameter table documents there for LaserGRBL and Lightburn. *This information is provided “AS IS” to provide a starting point. 3D Digital Spool Rack-S (Single）. I know that the K40 has been around for a good while now and I’m surprised to not find a shared materials library for it. It’s on a Sculpfun S9 with Air assist. Check your settings. z ruida 6445s. With a powerful 80W and 100W laser power option, the OMTech Pro 2440 promises an innovatively sleek and compact structure. where can I find the material library in lightburn 0. There is one setting for this type of GCode laser. As you modify these settings, you can use the Preview window to see the The image above shows the settings for Line mode. In this video we will cover the Material Sep 5, 2021 · Lightburn Tutorial: Setting up the materials libraryBeginners walkthrough for materials library in LightburnJoin the Laser Livestream Facebook group - http Apr 15, 2023 · LightBurn includes a number of tools to help you find the best settings for your laser. Too fast and your material will not show enough darkness variations. Using a Rotary. clb) for LightBurn. Working With Fusion 360. Lightburn PowerScale Generators - O2 Creative Primary Documentation. The Cut Settings window in LightBurn is accessed by double-clicking an entry in either the Cuts / Layers window or the Material Library list. 7. Diode lasers with improved mechanics can reach up to 10,000 mm/min and more (though, speeds above 25,000 mm/min are very unrealistic, even if the manufacturer advertises it). Welcome to your ultimate resource for maximizing the CrealityFalcon laser engraving and cutting machine! This guide delves into optimal parameter settings, catering to both seasoned enthusiasts and newcomers. If you choose Import Prefs, the original configuration is overridden. 2mm offset in design for cutting. Once you have loaded your image, you then make sure your image file is aligned. Nov 16, 2021 · LightBurn's Material Library provides a way to store and organize lots of presets for different operations on different materials, and have a way to quickly apply them. Click Import to import the file xTool_D1_Prefs. For cutting, the speed range is 100-1000 mm/min, for engraving I recommend 1000-2500 mm/min. You will eventually get a good sense of where to start from. However, this could affect the results: best settings being 62% power and 16mm/s. 4. We will use it to Lightburn tutorial: Getting the best engraving settings for materialEmblaser Pro video information and preorder: https://darklylabs. The default settings for the material test will produce a test grid about 150 mm long and 50 mm tall. 80%. Edit: I just looked to find Thunder USA provides 3 different Material Library files, a 60w, 80w and a 100w listing. com, they offer files for different wattage as well) from various pages or created using an online generator, alternatively LightBurn offers its own tool for this (menu Laser Tools ⇾ Material Test Generator; an explanation video is available here ). g. Visually inspect cuts or engraves in progress. 0 version software. 8mm. I only see z-axes, but I cannot seem to lower it accurately and unsure if this is where I set the height. Once you have dialed in the settings that work best, you can save them to the ‘Materials Library’ to easily As each material is different, this ‘cut rate’ will need to be guessed initially. Different materials have their own settings on laser engraving / cutting software before you put them on our xTool D1, D1 Pro, M1 and Laserbox. 0 or higher, it eliminates the need for parameter searching and testing, and enhances the quality of Dec 29, 2023 · a) what material are you trying to engrave exactly ( a picture would help) b) what design you trying to achieve c) where you finding troubles. Select the option to for Library window. Above datas only for reference. Aug 1, 2023 · The edit material setting are the basic setting for the layer… The test will allow you to modify whichever pair you pick to vary. Place a scrap piece of the material you're testing into your laser, and adjust your focus appropriately. 15 May 4, 2019 · When you want to use a material from the library, you select the cut setting in the Cuts list that you want to apply the material setting to, select an entry in your library, then click Assign to Layer. 6K subscribers. In your case, with the DSP controller, it will be the focus height + the material height. Oct 17, 2020 · Like engraving a foto the darker the image the darker the actual result. ) for color marking requires experimentation. Fast and easy to get started with for beginners. By default, the Cut Planner is set to Order by Layer followed by Order by Priority, with Cut inner shapes first and Reduce travel moves enabled. Depending on your time / quality requirements, you can go higher. Hey all, So I was beyond disappointed to find that Creality did not include Lightburn material libraries for the machine, and the basic graph included on the SD card for cut settings is extremely limited. Dec 1, 2020 · LightBurn Software Questions. If you need to read our documentation in a different language, you can use Google Translate to translate this website into your preferred language. Our instructions cover thickness，power, work speed Feb 7, 2024 · Begin by ensuring that your Falcon 2 is powered on and connected to your computer via a USB cable. In this video we will cover the Material Test tool. From my experience, you nearly never can use that high speeds without sacrificing quality. Too slow and your material will burn or even catch fire. Jan 23, 2023 · dinki (Chuck Connors) January 23, 2023, 2:57pm 1. This topic was automatically closed after 30 days. 3. These are split into two pages - Display / Units settings and File settings. Aug 22, 2023 · Re: 40 W materials library. 4 version of Lightburn the 20W diode power requires higher settings to cut same materials such as paper, 1/8’ bass wood. When you click “Material Settings” in the Material Test window, the settings window you’re taken to controls all settings for the test grid except for the two parameters you’ve selected to test for in the main Material Test window. You can access the Machine Settings by typing the following into the Console window: $$ then press Enter. This would be a good starting point for me so I Oct 23, 2023 · I’m looking for some good guides, describing settings used in common materials. The next release enables the use of “relative” mode for DSP controllers, which will make this much simpler. CLB file. A profile is a single set of settings for one particular material e. Typical hobby plywood. Database. Setting: Process Method Image Process Material Ceramic tile Speed(mm/s) 1000 Max Power(%) 40 Pass 1 Line space 0. This is a common issue with bamboo cutting boards, as it’s made from lots of slithers of bamboo and they have different densities, so will always engrave unevenly. Recently cut 1/8 pressed wood at 200 speed and 50% power settings. You set a material type, thickness (if appropriate), and a short description. May 14, 2024 · This is a digital download for a Material Library file (. I use 1/4” thick leather and I’m attempting to engrave to make Mar 10, 2023 · I found just two settings at Neje’s web-site but lahobbyguy has a great material library with various materials for sale. lbdev. Nov 22, 2022 · Additional settings: 1. Was just curious if you guys had ideal power/speed settings for various types of material? I’ve seen a few settings for the Neje app, but they are seem to be quite different. Some of you folks have been using it for multiple years and have built up a wealth of knowledge that I The Cut Optimization Settings window lets you adjust the variables by which the Cut Planner decides on cut order and pathing. 02″ in metals to 0. In LightBurn’s Laser window: Click on Devices. The Official Thunder Material Library PDF as well as the precompiled LightBurn library file are attached below. Mar 21, 2023 · When using Lighburn, when you create a setting in your library it starts creating a (. The formats of the following files are not limited to DXF, Lightburn, SVG and other formats. vn hy xg il pr bp cd iu ml yf