After we get common FDM printers is to melt, and then out of print, print process in different parts of the cooling process has different shrinkage rates.
However most of the printing process are partial, so it is easy to deform or bend (PLA shrink below the ABS, but also have deformations problems).
How to avoid and reduce such a situation? Floor heating is not enough. We found 14.
1, the use of heated floor (heating the print bed)
Heating print bed can help the first printing of the bottom and the upper temperature, which ensures that the cooling of the entire object is homogeneous.
Print bed heating is vital for I3 pro 3D printer
2, printing a mattress
Pad Raft, most sections of the software can be set. Is printed below, generated a larger plane.
3, the initial calibration z axis print height
Construction of the first layer, enough to affect the result. If your starting height is too high for the z axis of the machine, heating the extrusion plastic screen attached to the plate will not be effective. Suggestions to 0.05mm for tuning the smallest units, to conduct the tests. Until the extrusion plastic screen due to distance between nozzle and platforms is too narrow, and forced a large area of flat, can be regarded as a right back.
4, with the construction of a platform
Recommended use of Kapton solder masking tape and 3M blue masking tape (PO), with excellent adhesion.
5, keep this platform clean
Construction of a clean surface of the platform, PLA and ABS adhesion of the two materials has more.
6, reduce printing speed
Slow printing will help increase the degree of fine print, printed before the underside of the section or the initial build, have better adhesion.
Also, so you can print out the area has plenty of time, let the cooling process more evenly.
7, reduce printing temperature
However, don’t try to print to a low temperature, caused feeding motor and most likely out of the plug.
Best at the lowest temperature allows the extrusion of plastic/print and have been successful in temperatures.
9, printed mouse ears
Mouse ears by Zach Smith thought of an idea. Add small circular area object at the corners, helped this corner post attached to the work surface.
This object similar to a Raft of features like mouse ears, but without a large area of printed material.
10, print lining
Using devices similar to the slip, set around the object. Help to make Raft raft formation, to avoid the effects of deformation or bending.
11, with chamfer
Recommended design object, corner chamfer, this shape prevents the bending.
12, reducing the amount of fill
The more populated, more plastics, greater the pulling power of the cooling process.
Reducing material use will significantly reduce the plastic internal forces and reduce the deformation of the object and the possibility of bending.
13, sand processing insulating tape surfaces
Insulation tape to sandpaper the surface scratched up fine lines, increases the adhesion of plastic, making it easier for plastic adhesion heating platform.
14, generate an ABS surface directly when the backplane
Some advice before you print directly on heating platform coated with liquid ABS, like generating a large area of floor.