By leveling your bed, you also place a mouthpiece away from the bed. This distance should correspond to the height of your first layer and the amount of plastic actually extruded when printing your first layer. If your printer does not extrude enough plastic to fill the distance between the mouthpiece and the bed, you will have adhesion problems. Too much, or over-extrusion, and you have too much filament that has to go somewhere. The Creality Ender 3 is a favorite 3D fan printer that sells well below the expected price for printers of this caliber.
So if the raft does not adhere correctly to the platform, the entire model can deform during the printing process. This problem mainly occurs when large models are printed or when the printer is exposed to concepts. In addition, the lack of maintenance of the platform can negatively affect the adhesion of the model. The first layers of material, which start the entire printing process, are called RAFT.
Exudation and chaining can also be affected by the print temperature. If the temperature is too high, the viscosity of the material decreases and the material drips even when the filament retreats. A low temperature stops the exudation, but affects the print quality. So consider this parameter when setting an ideal print temperature. That is why it is important to adjust the height of the mouthpiece properly. Lower print speed If you try to print the filler too quickly, the extruder will not be able to keep up and will not notice enough extrusion in you.
In addition, when high temperature filaments are printed in a closed or heated construction chamber, the vapors tend to heat up significantly. PETG generally prints better with a greater distance from the mouthpiece to the bed to prevent the mouthpiece from picking up the filament that can drip on the print later during printing. In addition, the extra distance helps to avoid an excessive adhesion problem that can occur, for example, when printing on glass beds or PEI The shrinkage distance is highly dependent on our printer, as both the melter and the extruder and the type of extrusion must be taken into account. Most bow print printers work well with a shrinkage value between 3 mm and 6 mm and direct extrusion printers between 0.5 mm and 2 mm.
3D printer rope and mouthpiece pouring are two common 3D printer problems that generally share the same root cause. Too hot printing and use of incorrect retraction settings. Especially when switching to smaller nozzle sizes, your extrusion settings must be successful. Smaller diameter holes are much less forgiving as we are under higher pressure trying to extrud through a smaller hole to start with. Too much pressure and the supply engine drive wheel is likely to start rectifying instead of pushing the filament. Many HotEnds, even in direct extruders, contain a PTFE coating, that is. a short piece of Bowden tube somewhere between the mouthpiece and the heat dissipation.
Plastics shrink when cooled, and this leads to an effect known as deformation. When plastics shrink, they pull in, curling the edges of an Camping upward print and separating printing. A heated bed keeps the temperature of the base layers high and prevents them from shrinking inward.
If you are already using a heated print bed, make sure it is at the right temperature and keep the temperature up to date during printing. Most cutting machines automatically increase the 3D printing speed of the filler or use an extrusion multiplier / line width greater than regular contours. This setting is often set proportionally by applying a multiplier to the general settings of your 3D printer. If you push your printer to the limit in terms of extrusion speed and volume, the filler is the most likely place to start failing first.
Layer changes can also occur when the printer head collides with the model being printed. They continue to print regardless of whether the path is blocked or not. To solve collision-related problems, simply reduce the travel speed of the printer.
The hotter your print temperature, the more likely an exudation will occur. So if in doubt, try to print a refrigerator, decrease in steps of 5 ° C by running small tests each time. During the retreat, a configurable filament length is removed from the mouthpiece before a displacement movement takes place.