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Assign a part perimeter chain as the input geometry.The Contour 2D operation may be used for roughing as follows: In this circumstance, it is necessary to partially clear away the stock outside the part perimeter before proceeding to the finishing operations. When stock thickness exceeds the shoulder length of the tools, the surrounding uncut stock may interfere with toolpaths drawn on the perimeter of the part, causing collisions. A roughing operation uses large diameter tools and coarse settings, and should not cut all the way down to the drive surface(s), instead leaving a small offset for the finishing operations to clean up afterwards. 3D geometry will typically need to include one as the first operation, while 2D geometry may not. MasterCAM 2020 Reference > Assigning Geometry What is a Roughing Operation?Ī roughing operation is used to remove large amounts of material rapidly and to produce a part geometry close to the desired shape. MasterCAM 2020 Reference > Managing Operations
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Plastics (Acrylic, HDPE, Corian, Pattern Board).Non-ferrous metals (aluminum, brass, copper).The GSD FabLab does not currently provide templates for less frequently machined materials, though we do maintain tooling to work with the following: Wood Flat Stock 2D Milling Template - With Sample Geometry (2020) Wood Context Model Milling Template - With Sample Geometry (2020) Wood Context Model Milling Template - Without Sample Geometry (2020) A special template is provided for milling flat stock materials, such as single sheets of plywood or MDF. The wood template should be used for all wood and wood products, including softwoods, hardwoods, plywood, oriented strand board, and medium density fiberboard.The foam template should be used for all densities and types of foams, including extruded polystyrene, expanded polystyrene, and high density polyurethane.įoam Context Model Milling Template - Without Sample Geometry (2020)įoam Context Model Milling Template - With Sample Geometry (2020).
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It is necessary to separate the two, because the material qualities and behaviors vary greatly and require different tooling and parameters for successful milling. The GSD FabLab provides MasterCAM templates with and without example geometry, for both Foam and Wood projects.