Binder printed on powder has a tendency to spread slightly, causing surfaces of a part to migrate outwards. This is known as “bleeding” and to compensate for this, it is necessary to determine the Bleed Compensation value to apply to a part. Once that value is determined, a small amount of thickness is shaved off of all surfaces during the printing process to keep the part in true perspective.
For printers with more than one print head, the Bleed Compensation is also affected by the quality of the print head alignment. Proper print head alignment is very important in minimizing shrinkage and expansion effects during printing.
Bleed Compensation values will differ according to the printer and powder type used. The recommended Bleed Compensation values for the powder type used with your printer have been preset in ZPrint. For most users, these values will never need to be changed.
- 3DPrint will recommend values for the X-, Y-, and Z-Axis when using a Base Powder. You may override these values when you create a custom powder type. See Section 6.1 “Create Custom Powder Types” for more information.
- ProJet® 360, 460Plus, 660Pro and 860 only - 3DPrint keeps Bleed Compensation checked (On) by default. Uncheck Bleed Compensation in the 3D Print Setup dialog to turn off Bleed Compensation for the current build.
WARNING: A part may be contained in one file but may consist of several parts. If the parts are not merged together, bleed compensation will remove a shell from each separate part. This may cause the part to be separated into several pieces. Applying Bleed Compensation may leave a stripe (shown below) on parts that are not merged.