The default PRECISION is set to 10 the value can be set to any integer between 0 and 99. When converting splines with AutoCAD (2012 or later) or BricsCAD (v16.2 or later), the PRECISION setting controls how accurately the resulting polyline will fit the original spline: the higher the setting, the more accurate the conversion. Setting the PLINECONVERTMODE variable to 1 can introduce errors during spline conversion. So, for best results, set PLINECONVERTMODE to 0 (off).įigure 1. The good news is that when PLINECONVERTMODE is set to 0 (off), indicating that the output polyline from the PEDIT command should not include arcs, none of these errors are present. This incorrect conversion is present in both AutoCAD and BricsCAD conversions. The callouts reveal how arcs are incorrectly added to the design, changing the design intent. The original spline is green and the output polyline red. The PLINECONVERTMODE variable was set to 1 (on), indicating that the output polyline from the PEDIT command can include arcs. If this is turned on (1), the output polyline will potentially include arcs that introduce errors.įigure 1 shows part of a sign cutting pattern from Adobe Illustrator. The PLINECONVERTMODE variable controls how the spline is represented as a polyline. Using AutoCAD or BricsCAD to process the Splines into optimized Polylines ready for G-Code creation is now the same process (BricsCAD v16.2 or later).ĪutoCAD and BricsCAD have two settings that impact how the spine is converted to lines and arcs: PLINECONVERTMODE and PRECISION. Most notably, BricsCAD now honors the PLINECONVERTMODE system variable and the PRECISION variable is included to control the resolution of the converted Polyline. New 2016 – Beginning with BricsCAD v16.2, the conversion of Splines to Polylines with BricsCAD works the same as AutoCAD.
#Convert lego cad files to sets how to#
The process involves taking advantage of CAD packages’ spline conversion tools and knowing how to optimize the resulting polylines.īoth BricsCAD and AutoCAD have built-in spline converters that will turn Adobe Illustrator splines into polylines comprised of line and arc segments. AI file cutting path to a format that can be used to make a G-Code file to guide the cutting operation with the best possible results. Most cutting machines require a G-code compatible format, one with just lines and arcs but no splines, to guide their work. The output files (.AI) often include mathematical splines to represent that path. Designers commonly use Adobe Illustrator to create cutting paths to control automated machine tools.
0 kommentar(er)
