Properly supported parts are critical to final part accuracy,] and print reliability. To properly setup and support the parts, use the SMART SUPPORT feature in 3D Sprint for generation of support structures. The image below demonstrates the two support generation styles available. The Default style is the the dense style for general printing and only reserve the lean style for small delicate geometries.

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   Figure # 2. The Dense supports are shown on Part A


3D Sprint is set up by default to draw the supports twice for the Accura® AMX™ Rigid Black material to increase the stiffness of the structure.  Notice that the part on the left in image A collapsed after being left submerged in the resin over a 48 hour period.  The double-drawn supports for the part on the right swelled after 72-hours but remained standing and firm. 

Figure # 3. Double-drawn supports after 48 and 72 hours in resin



Double-drawing the supports does add to the total print time, but it is required in order to print taller structures and longer prints (24 hours or more). This method is faster and far more effective than simply increasing the Border Overcure amount for a single draw of the support vectors.  The Border Overcure value is how much additional cure depth is added past the current layer.  Less Border Overcure means less total cure depth and thus allows for faster draw speeds. These parameters have been optimized and set as default to ensure build success. For the ProX 800, the default build style is Accura® AMX™ Rigid Black Premium. If light weight, delicate geometries are to be printed, we have made Accura® AMX™ Rigid Black Lean build style available.

Figure # 4. Accura® AMX™ Rigid Black Premium Build Style



Accura® AMX™ Rigid Black supports are very easy to remove.  They will often separate from the platform and the part in one piece; leaving little behind on the platform (see examples in image below).  The supports do create a more noticeable mark on the part than other materials, but do not risk the security of the build by reducing the number of attachment points.  Consider adding more points to taller features for best result. 

Figure #5. Removed supports shown in one piece