Printing without the raft using a glass build plate is a method that can bring several benefits to your work with 3D printers. First, it allows you to save on material used to print the raft, which is then usually thrown away, and it allows you to reduce the time spent on post-processing. Your models gain an improved quality of bottom surfaces as they are printed directly on the smooth glass surface. Such quality is impossible to achieve when printing with standard build plates. However, succeeding at printing without the raft requires learning some rules that will help you reduce the effect of warping and avoid having to reprint your model. Follow the steps described below when using the glass build plate.


Z-SUITE Settings


Calibration & Maintenance


Before you start to print without the raft, you have to properly calibrate the platform in your printer. This procedure makes it less possible for prints to deform during the printing process. When using the glass plate, you have to carry out the manual calibration. It involves adjustments of the platform’s position in relation to the nozzle by tightening or loosening the platform screws.

Detailed instructions are displayed on the screen during the calibration. To start the calibration, open the Tools menu, then select Platform and then Manual Calibration.

You can use the Automatic Calibration option, but only with the M300 Dual.

Also, clean the glass plate thoroughly from the remaining material, dust and dirt before each printing process. To achieve the best possible results, the plate should be as smooth as possible.


Temperature Control


When protecting your prints from the warping effect, it is very important to control the temperature in the print room. The temperature should be maintained within the range of 21 and 28° C [70 – 82° F].

If you’re unable to provide the proper temperature, isolate the printing chamber from the surroundings with the side covers set and a HEPA Cover. These accessories improve the printing conditions and protect your prints from temperature differences which could lead to warping.

This manual provides instructions on how to install side covers in your printer and this short film explains all the features of the HEPA Cover.


Plate Adhesives

If you’re still having problems with platform adhesion, try coating the glass plate with a layer of either a glue stick or a spray adhesive.

When using a glue stick, remember that the applied layer should be thin and even to retain the smoothness of the printing area.

When using a spray adhesive, at first unplug the heatbed cable and remove the platform from the printer. Remember that the spray has to be applied while the platform is cool. Spray the plate from a distance of 15-30 cm [5.9-11.8 in]. Next, wait until the solvent evaporates before installing the platform back in the printer.

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