How To Sketch On A Surface

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frcaduser
Posts: 352
Joined: Wed Apr 07, 2021 11:22 pm

How To Sketch On A Surface

Post by frcaduser »

Version 0.20.2
Rev. # 29603 (Git)
Release Date 2022/12/07 02:35:37
OS Windows 10 Version 2009
Word Size 64-bit

Hello,

I am attempting to sketch on a surface. I followed along the following video: https://www.youtube.com/watch?v=MElxwCj0svA

When I perform the last step when switching over to the Curve workbench, no sketch appears on the surface as was shown
in the video (as soon as the last step is performed, the sketch disappears from the screen).

Can someone please help.

frcaduser
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curvedSurface_v1.FCStd
(56.9 KiB) Downloaded 10 times
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papyblaise
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Re: How To Sketch On A Surface

Post by papyblaise »

the sketch has not disappeared, it is just hidden, click the Space bar and it is reborn
Attachments
curvedSurface.JPG
curvedSurface.JPG (21.11 KiB) Viewed 1818 times
frcaduser
Posts: 352
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Re: How To Sketch On A Surface

Post by frcaduser »

Hello,

I got the lines to appear. I went to the properties Display Options [Display Mode] and set it to Flat Lines (the lines
will also appear if Wireframe is selected) when selecting and highlighting the Sketch_On_Surface object. This did
the trick. However, I am still unable to extrude the sketch from the curved surface as per the video tutorial.

The screenshot that you provided is not what you're supposed to get. The objects should be emanating from the
surface of the curved object.

Yes, the spacebar toggles the Visibility option in the Display Options of the Sketch_On_Surface object
between true and false.

frcaduser
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linesNowAppear.png
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Chris_G
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Re: How To Sketch On A Surface

Post by Chris_G »

Sketch001 must be on XY plane.
Set its MapMode to "Deactivated" and reset its placement to default.
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curvedSurface_v2.FCStd
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frcaduser
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Re: How To Sketch On A Surface

Post by frcaduser »

Hi,

thank you for providing a potential solution. Why does the sketch have to be perpendicular to the curved
surface and contrary to both the video instructions and logic? Although I am following the video for this specific
example, the reason for learning this feature is because I would like to apply it to one of my designs that is not
academic in nature.

Why does it work for the guy in the video and not for me even though I applied the same steps? I also scrolled
the comments below the video and some of the folks there were also not getting the expected results.

frcaduser
Attachments
perpendicularPlances.png
perpendicularPlances.png (7.92 KiB) Viewed 1758 times
edwilliams16
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Re: How To Sketch On A Surface

Post by edwilliams16 »

Time stamp in the video? He shows more than one method. @frcaduser
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Re: How To Sketch On A Surface

Post by edwilliams16 »

Time stamp in the video? He shows more than one method. @frcaduser
frcaduser
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Re: How To Sketch On A Surface

Post by frcaduser »

Hi,

I actually attempted both methods.

Neither worked for me.

frcaduser
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Re: How To Sketch On A Surface

Post by edwilliams16 »

@Chris_G

Something is going wrong in your solution. I get these errors if I move anything in Sketch001

Code: Select all

11:02:04  Sketch bounds = (-59.903366, 55.768185, 4.291132000000005, 99.983047)
11:02:04  Target face bounds = (0.0, 1.0, -100.0, 0.0)
11:02:04  mapping shape #  1
11:02:04  Self-intersecting wire
Unorientable shape

11:02:04    0:Invalid initial face
11:02:04  Total : 1 shapes
11:02:04  mapping shape #  1
11:02:04  Self-intersecting wire
Unorientable shape

11:02:04    0:Invalid initial face
11:02:04  Total : 1 shapes

and when I measure the edge lengths of the mapped sketch, the aspect ratio is wrong.
frcaduser
Posts: 352
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Re: How To Sketch On A Surface

Post by frcaduser »

Hi,

I followed the video's instructions. When I drew the sketches, they were all within the bounds of the blue
construction geometry. Apparently, there are now three different methods for obtaining the same result ...
all involve some time of jumping through hoops just to be able to sketch on a surface (I am including the
method from an earlier post where it was proposed to draw the sketch perpendicular to the surface). There
is no clearly defined function (tool) for performing this operation which adds to the confusion.

Btw, in his video, he also explicitly states that sometimes one or the other might not work hence showing
both methods. A clear and linear method needs to be created to avoid confusion.

At your end, were you able to replicate the functionality per the instructions as stated in the video?

frcaduser
Last edited by frcaduser on Sat Jun 03, 2023 3:17 pm, edited 1 time in total.
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