Form 2 3D Printer
A good print starts with a well-designed model that is optimized for 3D printing. We've created this design guide to outline some of the minimum features you can expect from Formlabs printers.
Please note: The guidelines below have been developed using Formlabs Clear resin printing at 100 microns. You may experience slight variations with other Formlabs resins and other layer heights.
Minimum Supported Wall Thickness
Recommended: 0.4 mm
A supported wall is one that is connected to other walls on two or more sides. A supported wall smaller than 0.4 mm may warp during the peel process.
Minimum Unsupported Wall Thickness
Recommended: 0.6 mm
An unsupported wall is one that is connected to other walls on fewer than two sides. An unsupported wall that is smaller than 0.6 mm may warp or detach from the model during printing.
Maximum Unsupported Overhang Length
Recommended: 1.0 mm
An overhang refers to a part of the model that sticks out horizontally parallel to the build platform. Printing such features without supports is discouraged, as the layers cannot maintain their structure. Horizontal overhangs will be slightly deformed beyond 1 mm and become increasingly deformed as the length of the overhang increases. You can turn on “internal supports” in PreForm to ensure your overhangs are supported.
Minimum Unsupported Overhang Angle
Recommended: 19° from level
The overhang angle refers to the angle from horizontal that the overhang sticks out. Printing at an angle less than 19° could cause the overhang to break off the model during the peel process. Rotate your part so flat surfaces can be held up by supports if they are not already self-supporting.
Maximum Horizontal Support Span/Bridge
Recommended: 21 mm
A span is the distance between two intermediate supports of a structure. While printing horizontal spans is discouraged, certain geometries print well. For a 5 mm wide and 3 mm thick beam, spans longer than 21 mm are likely to fail. Wider beams must be kept shorter to avoid breaking during the peeling process.
Minimum Vertical-Wire Diameter
Recommended: 0.3 mm (7 mm tall) to 1.5 mm (30 mm tall)
A wire is a feature whose length is greater than two times its width. The ratio is key to printing wires; at 0.3 mm thickness you can print up to 7 mm tall before you start to see waving. 1.5 mm wires can get up to 30 mm tall without defects.
Minimum Embossed Detail
Recommended: 0.1 mm
Embossed details are shallow raised features on your model, such as text. Details smaller than 0.1 mm in thickness and in height may not be visible on your print.
Minimum Engraved Detail
Recommended: 0.4 mm
Engraved details are imprinted or recessed features on your model. Details recessed less than 0.4 mm in thickness and in height may not be visible because they will be fused with the rest of the model during the print process.
Recommended: 0.5 mm
Clearance is the amount of distance needed between two moving parts of a model (e.g., the distance between gears or joints). A clearance of less than 0.5 mm may cause parts to fuse.
Minimum Hole Diameter
Recommended: 0.5 mm
Holes with a diameter less than 0.5 mm in the x, y, and z axes may close off during printing.
Minimum Drain Hole Diameter
Recommended: 3.5 mm diameter
Drain holes are recommended for resin to escape in models that are a fully enclosed cavity (like a hollow sphere or hollow cylinder printed directly on the build platform). Without drain holes of at least 3.5 mm in diameter, the part may trap resin and lead to an explosion of the print.
It's a lot better than I expected it to be. I'm really happy with it. Thank you
3DV was fantastic, fast and communicative! I recommend them and I will absolutely work with them again.
These guys are great for high quality resin prints. Close to my office, too, so I use them, often.
Like last time, great to deal with. Good communication by explaining the process well to set proper expectations with me. Plan to work with them again in the future.
Prints have all been wonderful. Amazing quality and amazing service. Thanks a ton!