DXF Import into FreeCAD - Revision history

Aidan Williamson at 13:05, 10 December 2019

2019-12-10T13:05:56Z

← Older revision		Revision as of 13:05, 10 December 2019
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			[[Category:FreeCAD]]
	=Introduction=		=Introduction=

Marcin: /* Protocol for Converting DXF CNC Cutting Files into a 3D Object */

2016-09-14T02:13:44Z

Protocol for Converting DXF CNC Cutting Files into a 3D Object

← Older revision		Revision as of 02:13, 14 September 2016
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	[[Image:extruded.jpg\|500px\|Extruded part.]]		[[Image:extruded.jpg\|500px\|Extruded part.]]
	*Delete all the sketches from the Project Tree, including the sketch under the pad. This more than halves the required memory for the file. Then save the padded sketch (a 3D object) as a separate file in FreeCAD. Note that a Sketch for a pad takes more memory than a Pad of that sketch. This is done to optimize viewing speed in FreeCAD.		*Delete all the sketches from the Project Tree, including the sketch under the pad. This more than halves the required memory for the file. Then save the padded sketch (a 3D object) as a separate file in FreeCAD. Note that a Sketch for a pad takes more memory than a Pad of that sketch. This is done to optimize viewing speed in FreeCAD.

			=Links=
			*[[DXF Export from FreeCAD]]

Marcin: /* Protocol for Converting DXF CNC Cutting Files into a 3D Object */

2016-09-01T05:39:27Z

Protocol for Converting DXF CNC Cutting Files into a 3D Object

← Older revision		Revision as of 05:39, 1 September 2016
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	*Trace the DXF file in Freecad using the Sketcher workbench. Use the Polyline tool for contours, as well as other shapes as needed. Zoom in sufficiently such that When selecting a vertex, the quality control is being within a fraction of line separation from the actual point. This marks ~1/32" accuracy of the vertices.		*Trace the DXF file in Freecad using the Sketcher workbench. Use the Polyline tool for contours, as well as other shapes as needed. Zoom in sufficiently such that When selecting a vertex, the quality control is being within a fraction of line separation from the actual point. This marks ~1/32" accuracy of the vertices.
	[[Image:tracing.jpg\|500px\|Tracing a part from a DXF import in FreeCAD]]		[[Image:tracing.jpg\|500px\|Tracing a part from a DXF import in FreeCAD]]
	*Save the traced sketch in FreeCAD.		*Save the traced sketch in FreeCAD.
	*When finished tracing, go to the Part Design workbench and make a pad, 1/2", 1/4", or 1/8" thick. Or whatever the metal thickness is.		*When finished tracing, go to the Part Design workbench and make a pad, 1/2", 1/4", or 1/8" thick. Or whatever the metal thickness is.
	[[Image:extruded.jpg\|500px\|Extruded part.]]		[[Image:extruded.jpg\|500px\|Extruded part.]]
	*Then save the padded sketch (a 3D object) as a separate file in FreeCAD.		*Delete all the sketches from the Project Tree, including the sketch under the pad. This more than halves the required memory for the file. Then save the padded sketch (a 3D object) as a separate file in FreeCAD. Note that a Sketch for a pad takes more memory than a Pad of that sketch. This is done to optimize viewing speed in FreeCAD.

Marcin: /* Protocol for Converting DXF CNC Cutting Files into a 3D Object */

2016-09-01T05:32:51Z

Protocol for Converting DXF CNC Cutting Files into a 3D Object

← Older revision		Revision as of 05:32, 1 September 2016
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	*Trace the DXF file in Freecad using the Sketcher workbench. Use the Polyline tool for contours, as well as other shapes as needed. Zoom in sufficiently such that When selecting a vertex, the quality control is being within a fraction of line separation from the actual point. This marks ~1/32" accuracy of the vertices.		*Trace the DXF file in Freecad using the Sketcher workbench. Use the Polyline tool for contours, as well as other shapes as needed. Zoom in sufficiently such that When selecting a vertex, the quality control is being within a fraction of line separation from the actual point. This marks ~1/32" accuracy of the vertices.
	[[Image:tracing.jpg\|500px\|Tracing a part from a DXF import in FreeCAD]]		[[Image:tracing.jpg\|500px\|Tracing a part from a DXF import in FreeCAD]]
			*Save the traced sketch in FreeCAD.
	*When finished tracing, go to the Part Design workbench and make a pad, 1/2", 1/4", or 1/8" thick. Or whatever the metal thickness is.		*When finished tracing, go to the Part Design workbench and make a pad, 1/2", 1/4", or 1/8" thick. Or whatever the metal thickness is.
	[[Image:extruded.jpg\|500px\|Extruded part.]]		[[Image:extruded.jpg\|500px\|Extruded part.]]
			*Then save the padded sketch (a 3D object) as a separate file in FreeCAD.

Marcin: /* Protocol for Converting DXF CNC Cutting Files into a 3D Object */

2016-09-01T05:31:02Z

Protocol for Converting DXF CNC Cutting Files into a 3D Object

← Older revision		Revision as of 05:31, 1 September 2016
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	*Import DXF file that you created. Import lies in the XY plane. Set grid size to 1/32" or 30 thou, which is the required accuracy.		*Import DXF file that you created. Import lies in the XY plane. Set grid size to 1/32" or 30 thou, which is the required accuracy.
	*Trace the DXF file in Freecad using the Sketcher workbench. Use the Polyline tool for contours, as well as other shapes as needed. Zoom in sufficiently such that When selecting a vertex, the quality control is being within a fraction of line separation from the actual point. This marks ~1/32" accuracy of the vertices.		*Trace the DXF file in Freecad using the Sketcher workbench. Use the Polyline tool for contours, as well as other shapes as needed. Zoom in sufficiently such that When selecting a vertex, the quality control is being within a fraction of line separation from the actual point. This marks ~1/32" accuracy of the vertices.
			[[Image:tracing.jpg\|500px\|Tracing a part from a DXF import in FreeCAD]]

	*When finished tracing, go to the Part Design workbench and make a pad, 1/2", 1/4", or 1/8" thick. Or whatever the metal thickness is.		*When finished tracing, go to the Part Design workbench and make a pad, 1/2", 1/4", or 1/8" thick. Or whatever the metal thickness is.
	[[Image:extruded.jpg\|500px\|Extruded part.]]		[[Image:extruded.jpg\|500px\|Extruded part.]]

Marcin: /* Protocol for Converting DXF CNC CUtting Files into a 3D Object */

2016-09-01T05:27:29Z

Protocol for Converting DXF CNC CUtting Files into a 3D Object

← Older revision		Revision as of 05:27, 1 September 2016
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	FreeCAD thinks everything it imports is in mm. The [[CEB Press/Current Downloads]] files for the brick press from 2014 are in inch units - but LibreCAD dimensions are the same whether inches or mm - in which sense the LibreCAD files do not have an absolute dimensioning system. To allow for correct import to FreeCAD, the LibreCAD files of the brick press need to be scaled by a factor of 25.4 - the number of mm per inch.		FreeCAD thinks everything it imports is in mm. The [[CEB Press/Current Downloads]] files for the brick press from 2014 are in inch units - but LibreCAD dimensions are the same whether inches or mm - in which sense the LibreCAD files do not have an absolute dimensioning system. To allow for correct import to FreeCAD, the LibreCAD files of the brick press need to be scaled by a factor of 25.4 - the number of mm per inch.

	=Protocol for Converting DXF CNC ~~CUtting~~ Files into a 3D Object=		=Protocol for Converting DXF CNC Cutting Files into a 3D Object=

	The present goal is to convert a set of available CNC torch cutting files into a 3D model, as that is the only way to obtain a perfect, editable 3D CAD file in FreeCAD for future modification. The problem is that the original STEP file is not editable at the parameter level in any open source 3D CAD software - so we have to regenerate a FreeCAD-native file from parts.		The present goal is to convert a set of available CNC torch cutting files into a 3D model, as that is the only way to obtain a perfect, editable 3D CAD file in FreeCAD for future modification. The problem is that the original STEP file is not editable at the parameter level in any open source 3D CAD software - so we have to regenerate a FreeCAD-native file from parts.
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	*Open original DXF cutting library file of interest in [[LibreCAD]].		*Open original DXF cutting library file of interest in [[LibreCAD]].
	[[Image:libraryfile.jpg\|500px\|Libary part file.]]		[[Image:libraryfile.jpg\|500px\|Libary part file.]]
	*Isolate the component of interest in LibreCAD, and save as the ~~corresponding part in~~ Index		*Isolate the component of interest in LibreCAD. Scale the object by a factor of 25.4 within LibreCAD, and then save this working file. Use filenames as indicated in the Index.

	[[Image:isolated.jpg\|500px\|Isolated Part.]]		[[Image:isolated.jpg\|500px\|Isolated Part.]]
	*Open FreeCAD and create new document		*Open FreeCAD and create new document

Marcin: /* Protocol for Converting DXF CNC CUtting Files into a 3D Object */

2016-09-01T05:25:28Z

Protocol for Converting DXF CNC CUtting Files into a 3D Object

← Older revision		Revision as of 05:25, 1 September 2016
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	*Check out Index of parts and assemblies		*Check out Index of parts and assemblies
	*Select a part that you want to do.		*Select a part that you want to do.
	*Open original DXF cutting library file of interest in LibreCAD.		*Open original DXF cutting library file of interest in [[LibreCAD]].
	[[Image:libraryfile.jpg\|500px\|Libary part file.]]		[[Image:libraryfile.jpg\|500px\|Libary part file.]]
	*Isolate the component of interest in LibreCAD, and save as the corresponding part in Index		*Isolate the component of interest in LibreCAD, and save as the corresponding part in Index

Marcin: /* Introduction */

2016-09-01T05:25:08Z

Introduction

← Older revision		Revision as of 05:25, 1 September 2016
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	=Introduction=		=Introduction=

	*~~This~~ says that DXF importer is available in FreeCAD since FreeCAD 0.16		*The Github source [https://github.com/yorikvanhavre/Draft-dxf-importer] says that DXF importer is available in FreeCAD since FreeCAD 0.16
	*For earlier verion, follow this importer installation: https://github.com/yorikvanhavre/Draft-dxf-importer		*For earlier verion, follow this importer installation: https://github.com/yorikvanhavre/Draft-dxf-importer

Marcin: /* Protocol for Converting DXF CNC CUtting Files into a 3D Object */

2016-09-01T05:24:15Z

Protocol for Converting DXF CNC CUtting Files into a 3D Object

← Older revision		Revision as of 05:24, 1 September 2016
Line 21:		Line 21:

	The present goal is to convert a set of available CNC torch cutting files into a 3D model, as that is the only way to obtain a perfect, editable 3D CAD file in FreeCAD for future modification. The problem is that the original STEP file is not editable at the parameter level in any open source 3D CAD software - so we have to regenerate a FreeCAD-native file from parts.		The present goal is to convert a set of available CNC torch cutting files into a 3D model, as that is the only way to obtain a perfect, editable 3D CAD file in FreeCAD for future modification. The problem is that the original STEP file is not editable at the parameter level in any open source 3D CAD software - so we have to regenerate a FreeCAD-native file from parts.

			Protocol:
	*Check out Index of parts and assemblies		*Check out Index of parts and assemblies
	*Select a part that you want to do.		*Select a part that you want to do.

Marcin: /* Protocol for Converting DXF CNC CUtting Files into a 3D Object */

2016-09-01T05:23:40Z

Protocol for Converting DXF CNC CUtting Files into a 3D Object

← Older revision		Revision as of 05:23, 1 September 2016
Line 20:		Line 20:
	=Protocol for Converting DXF CNC CUtting Files into a 3D Object=		=Protocol for Converting DXF CNC CUtting Files into a 3D Object=

	The present goal is to convert a set of available CNC torch cutting files into a 3D model, as that is the only way to obtain a perfect, editable 3D CAD file in FreeCAD.		The present goal is to convert a set of available CNC torch cutting files into a 3D model, as that is the only way to obtain a perfect, editable 3D CAD file in FreeCAD for future modification. The problem is that the original STEP file is not editable at the parameter level in any open source 3D CAD software - so we have to regenerate a FreeCAD-native file from parts.
	*Check out Index of parts and assemblies		*Check out Index of parts and assemblies
	*Select a part that you want to do.		*Select a part that you want to do.