![]() ![]() End the print and tighten your spring a little and run the print again to make sure that the filament is laying a smooth line. If the filament is not laying down, your nozzle and bed are too close to each other.If you are using a USB connection, this is a great time to reopen the Machine Control Panel and monitor your temperatures and communication.Īs your build process starts, watch carefully as the extruder begins laying down the skirt and your first layer and check for potential problems: Extruders heat in a couple minutes, whereas heated beds may take 20 minutes. Exit Preview mode (if you want to make changes to your Processes).Īssuming you are ready to print, your printer will take some time to heat up before it starts printing.Make any additional adjustments to your First Layer Settings or Global G-Code Z offsets, then click OK to save the changes. Finally, click “Prepare to Print” to open the animated preview of your build process.Īfter watching the Preview, choose from three options (bottom left): Another way to think of this is that 100% of your extrusion will be forced into a space that is 75% of the layer height.įor the test print, we set the First Layer height to 100%. For a layer height of 0.2mm, this will give about 25% squish. If you would prefer the first layer to be squished, a value of -0.05mm will be a good start. Negative values will bring the nozzle closer to the bed and positive values will move the nozzle away from the bed. To adjust the placement of the first layer, you can adjust the Global Z-axis Offset on the G-Code tab. ![]() Once you have set the appropriate first layer height, width, and speed, you may find that the first layer is sized correctly, but it is printing too close or too far away from the bed. We recommend sticking to values within 100 to 200%. ![]() Printers with smaller nozzle sizes may benefit from this change. By increasing the First Layer Width, many users find that their first layer prints out much smoother and sticks to the bed much easier. The increased thickness of the first layer can help absorb small defects in the build plate and provide more surface contact area, which will result in better first layer adhesion.Īnother feature is the ability to change the First Layer Width. The software will automatically extrude twice as much plastic to account for the thicker first layer. For example, if you were using a layer height of 0.1mm, you could set your First Layer Height to 200% so that the first layer is printed with double thickness at 0.2mm. The First Layer Height determines the thickness of the first layer that is printed on the bed. In general, you want the speed of your first layer to be reduced, typically 30-50% speed, to allow extra time for the filament to gain contact with the bed and stick. So you subtract 5 from the set.For our model, we are using 35% for our First Layer Speed. You crack 20 cookies, but every 4 th one pops: cookies # 20, 40, 60, 80, and 100. Bonus: 2 more cookie layers (4) than cream layers (2). The sky’s the limit: If in a stack of 100 Oreos, every 4 th twisted Oreo (starting with the 4 th) makes a popping sound, and on every 5 th Oreo (starting with the 5th) the cookie cracks, how many cracked Oreos don’t say pop? If you stack 1 Oreo on another, how many layers of cookie do you have? Bonus: How many more layers of cookie than cream do you have?īig kids: If a box of Oreos has 2 rows of 16 Oreos each, how many Oreos are there in total? Bonus: The scientists bought giant boxes of 500 Oreos each to study them. Little kids: Each Oreo is cookie, cream, cookie. Wee ones: What shape is the cookie part of an Oreo? The machine stacks all the Oreos facing the same way, so once you figure out the first cookie, you can pick the right wafer to twist every time! The machine drops the second wafer on after the filling has cooled, so that wafer isn’t glued on as well. That filling oozes into the cracks, making it stick well. ![]() The Oreo-making machine squirts warm cream filling onto the bottom cookie. Have you ever pried off one wafer of an Oreo cookie perfectly so that all the cream sticks to the other wafer? Well, scientists at both Princeton University and MIT figured out how that happens. ![]()
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