logo
NOTICE:  This is the new PunchCAD forum. You should have received an email with your new password around August 27, 2014. If you did not, or would like it reset, simply use the Lost Password feature, and enter Answer as the security answer.
Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
Exporting for Autocad - polylines vs splines
Options
Go to last post Go to first unread
Previous Topic Next Topic
flatpack  
#1 Posted : Friday, April 5, 2019 7:59:04 AM(UTC)
flatpack

Rank: Senior Member

Joined: 9/29/2014(UTC)
Posts: 269

Thanks: 103 times
Was thanked: 18 time(s) in 14 post(s)
Hi, I've had some issues with ACAD users when I export from Shark to .dwg:

the curves which I've created using the 3-point Conic are seen as splines to the ACAD users.
It needs to be polylines for programming to cut.

Are conics splines? If so, what tools can I use to create curves to that they are exported as polylines? Or - what exporting parameters should i set?

Thanks!
Back to top
L. Banasky  
#2 Posted : Friday, April 5, 2019 10:02:56 AM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 612

Thanks: 175 times
Was thanked: 158 time(s) in 108 post(s)
I am not familiar with the 3 point conic, but I've always had
good results exporting as an R12 .dxf for CNC plasma, waterjet and milling machine
files.
Larry
Back to top
jdi000  
#3 Posted : Friday, April 5, 2019 10:17:27 AM(UTC)
jdi000

Rank: Administration

Joined: 7/29/2007(UTC)
Posts: 1,862
United States

Thanks: 1 times
Was thanked: 87 time(s) in 81 post(s)
Originally Posted by: flatpack Go to Quoted Post
Hi, I've had some issues with ACAD users when I export from Shark to .dwg:

the curves which I've created using the 3-point Conic are seen as splines to the ACAD users.
It needs to be polylines for programming to cut.

Are conics splines? If so, what tools can I use to create curves to that they are exported as polylines? Or - what exporting parameters should i set?

Thanks!



Hello

Use the tool in the arc pallet called "Arcs From Curves" Arcs are much better for CNC equipment than polylines.

Regards
Jason
jdi000 attached the following image(s):
Annotation 2019-04-05 123940.png (31kb) downloaded 1 time(s).

You cannot view/download attachments. Try to login or register.
Windows 11, 10
Back to top
thanks 1 user thanked jdi000 for this useful post.
MPSchmied on 4/5/2019(UTC)
flatpack  
#4 Posted : Friday, April 5, 2019 10:21:21 AM(UTC)
flatpack

Rank: Senior Member

Joined: 9/29/2014(UTC)
Posts: 269

Thanks: 103 times
Was thanked: 18 time(s) in 14 post(s)
Originally Posted by: L. Banasky Go to Quoted Post
I am not familiar with the 3 point conic, but I've always had
good results exporting as an R12 .dxf for CNC plasma, waterjet and milling machine
files.
Larry




Thanks Larry, I've been exporting as a 2013 .dwg, 2d flat drawings – mainly because that is the standard they request.

is a .dxf mainly for 3d? Not super knowledgeable about that.
Back to top
flatpack  
#5 Posted : Friday, April 5, 2019 10:22:52 AM(UTC)
flatpack

Rank: Senior Member

Joined: 9/29/2014(UTC)
Posts: 269

Thanks: 103 times
Was thanked: 18 time(s) in 14 post(s)
Originally Posted by: jdi000 Go to Quoted Post


Use the tool in the arc pallet called "Arcs From Curves" Arcs are much better for CNC equipment than polylines.

Regards
Jason



Ok noted with thanks. Could you kindly elaborate on how it works please? I've never used it before.
Back to top
UGMENTALCASE  
#6 Posted : Friday, April 5, 2019 11:30:26 AM(UTC)
UGMENTALCASE

Rank: Senior Member

Joined: 3/21/2017(UTC)
Posts: 971
Man
United Kingdom

Thanks: 47 times
Was thanked: 339 time(s) in 225 post(s)
I can open 2010 autocad files if you would like me to check them for you? See that we get it right before you go to your customer with it?
Back to top
thanks 1 user thanked UGMENTALCASE for this useful post.
flatpack on 4/12/2019(UTC)
L. Banasky  
#7 Posted : Friday, April 5, 2019 1:11:31 PM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 612

Thanks: 175 times
Was thanked: 158 time(s) in 108 post(s)

<<<<<Thanks Larry, I've been exporting as a 2013 .dwg, 2d flat drawings – mainly because that is the standard they request.
is a .dxf mainly for 3d? Not super knowledgeable about that.>>>>>

Mostly for 2d outlines, depends on the CAM program, really 2 1/2 d, the .dxf
files can be used for drilling and tapping, milling pockets and slots etc.
Larry
Back to top
L. Banasky  
#8 Posted : Monday, April 8, 2019 5:09:31 AM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 612

Thanks: 175 times
Was thanked: 158 time(s) in 108 post(s)
Just in case you miss converting to an ARC or LINE.
The EXPORT to r12 .dxf does it automatically.
Larry
File Attachment(s):
Example r12 dxf.sfx (14kb) downloaded 0 time(s).
L. Banasky attached the following image(s):
Example r12 dxf.jpg (34kb) downloaded 0 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
thanks 1 user thanked L. Banasky for this useful post.
flatpack on 4/12/2019(UTC)
jdi000  
#9 Posted : Monday, April 8, 2019 5:33:14 AM(UTC)
jdi000

Rank: Administration

Joined: 7/29/2007(UTC)
Posts: 1,862
United States

Thanks: 1 times
Was thanked: 87 time(s) in 81 post(s)
Originally Posted by: L. Banasky Go to Quoted Post
Just in case you miss converting to an ARC or LINE.
The EXPORT to r12 .dxf does it automatically.
Larry


Larry

Aren't these lines polylines and can have many little lines causing stops and starts if everything is arcs its a much smoother cut.


Regards

Jason
Windows 11, 10
Back to top
L. Banasky  
#10 Posted : Monday, April 8, 2019 6:36:32 AM(UTC)
L. Banasky

Rank: Senior Member

Joined: 2/16/2007(UTC)
Posts: 612

Thanks: 175 times
Was thanked: 158 time(s) in 108 post(s)
Seems to be a non-segmented line, I've been using the r12 .dxf
export for over 10 years, and the CNC plasma cuts fine.
Really don't know the difference between a Curve, Line, or Polyline.
Just works.
Larry
L. Banasky attached the following image(s):
Non-segmented lines.jpg (34kb) downloaded 0 time(s).

You cannot view/download attachments. Try to login or register.
Back to top
jdi000  
#11 Posted : Monday, April 8, 2019 6:39:00 AM(UTC)
jdi000

Rank: Administration

Joined: 7/29/2007(UTC)
Posts: 1,862
United States

Thanks: 1 times
Was thanked: 87 time(s) in 81 post(s)
Originally Posted by: L. Banasky Go to Quoted Post
Seems to be a non-segmented line, I've been using the r12 .dxf
export for over 10 years, and the CNC plasma cuts fine.
Really don't know the difference between a Curve, Line, or Polyline.
Just works.
Larry


Larry

Yes I guess it depends on the software generating the cnc code, and how it handles splines and polylines.

Regards

Jason
Windows 11, 10
Back to top
thanks 1 user thanked jdi000 for this useful post.
MPSchmied on 4/9/2019(UTC)
Users browsing this topic
Guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Powered by YAF.NET 2.1.2 | YAF.NET © 2003-2025, Yet Another Forum.NET