What Is 3D Print Stringing And How To Avoid It
Stringing is the visible lines that can be seen when an object is printed. It is caused by the extrusion of filament through the nozzle during printing.
Stringing can be reduced by improving the printing parameters and using a flexible material like Ninjaflex or TPU.
If you're printing small objects, stringing won't be as noticeable. But if you're printing something bigger than a few inches tall, you'll definitely notice it.
The first step to eliminating stringing is identifying its source. The most common cause of stringing is a clogged nozzle.
To fix this problem, clean the tip of your 3D printer with a cotton swab dipped in acetone and then examine it under a magnifying glass to make sure there are no traces of filament left behind on the tip.
If you have determined that your nozzle is clean and that you are still experiencing problems with stringing, then it's time to look at other possible sources of this issue.
One possibility could be an obstruction within your extruder orifice that prevents filament from flowing smoothly into it. You can use a piece of paper towel or a needle to clear out any obstructions within the extruder orifice to fix this problem.
Another potential cause for stringing could be too much pressure being applied to your material while it's being printed — too much pressure can cause material to break off into pieces before reaching its destination point on your object.
There are many things that can cause stringing, and it's important to understand what causes it so you know how to avoid it in your prints. Here are some common sources of stringing:
Retraction settings: Retraction settings are critical for avoiding stringing. The retraction distance setting controls how much filament gets pulled back into the nozzle before the print head moves forward again (i.e., retracts). If this value isn't set properly, you'll get strings of filament connecting sections of your print together that shouldn't be connected together at all! A good rule of thumb is to set your retraction distance to twice as far as your actual extrusion distance (i.e., if you're extruding 100 mm/s, set your retraction distance to 200 mm). This will prevent short strands from connecting parts of your print together while still allowing enough time for the material.
1.1 Retraction distance
The retract is the distance between where the filament is loaded on a spool and where it starts being extruded from the nozzle. If a 3D printer stops extruding, but there is still filament in the hot end, then you will see stringing when you continue to print. The reason is that when you start moving forward again, there is nothing holding the filament in place so it will just go back to its original position (where it was loaded on the spool).
The solution for this problem is to increase the amount of retraction before starting a print. This means that when the printer stops moving forward, the filament will be retracted by a certain amount before continuing to print. The amount of retraction depends on your printer and material; generally 0.5mm-1mm would be enough for PLA, while ABS needs more like 2-3mm.
Retraction speed: If you're using materials with high melt temperatures, such as ABS or nylon (polyamide), make sure that your extruder avoids overheating by retracting quickly. If the plastic isn't able to travel through the nozzle fast enough before it starts melting again, it may cause stringing in your print.
Temperature not right
Most 3D printers use plastic filament as their raw material. This material comes in various sizes, colors and shapes. The printer heats up the filament in order to melt it down into a liquid state so that it can be extruded through an inkjet-like nozzle onto a platform where it cools down again into solid form. If the temperature is too low, then you will get stringing; if it's too high, then you'll get blobbing instead (which also looks like stringing).
3D printing is a relatively new process that has been around for about 30 years. It has taken off in recent years due to the advent of affordable 3D printers, but there are still some situations where you might want to avoid it.
Here are some ways to avoid 3D printing:
Travel movement. If your product will be shipped or transported, you may want to avoid using a 3D printer. The plastic used in 3D printers can break down over time and become brittle, which can cause problems if it's subjected to shock or stress during transport.
Complexity. If your product has many moving parts or textures that need to be printed, using a traditional manufacturing method might be better suited to ensure quality results.
Unlimited run size. If you need more than one copy of an item, traditional manufacturing methods may be better suited because they can produce high quantities without requiring much additional setup time or waste materials like plastic filament or printer paper rolls that aren't reusable after being used once in the printing process.