Scaled Pattern

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wasabi_fire
Posts: 2
Joined: Thu Nov 25, 2021 4:20 pm

Scaled Pattern

Post by wasabi_fire »

Hi! I am learning free cad by doing a bbq grill. Its my first time posting here!

I am trying to draw a pattern of pockets but which the height is variable.
Here is the current state
current state of the design
current state of the design
Screenshot 2021-11-25 at 16.27.03.png (38.75 KiB) Viewed 719 times
I am doing a linear pattern however I don't want to have the height to be always the same. I tried multi transform, however I couldn't find a way to only scale the height.

I draw a simple sketch in the opens cad and it is quite simple, I just need to use the Pythagoras' theorem. Here is the render
draw in openscad
draw in openscad
Screenshot 2021-11-25 at 19.45.31.png (201.21 KiB) Viewed 719 times

Do you have any suggestions?

Thank you very much in advance!
Attachments
bbq2.FCStd
current state file
(83.01 KiB) Downloaded 7 times
chrisb
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Posts: 53923
Joined: Tue Mar 17, 2015 9:14 am

Re: Scaled Pattern

Post by chrisb »

Hi and welcome to the forum!

You could do it in Python, of course. With the GUI I would cut all to the border and then add an outer ring back. Before doing this, you should remove the small lines Edge5 to Edge8 in Sketch002. Such things can make the pocket fail.

The outer ring still shows remainders of the pockets, although I have refined the model. You can avoid this, if you make the first circle a little bit smaller.
SnipScreenshot-adbe47.png
SnipScreenshot-adbe47.png (88.37 KiB) Viewed 716 times
Attachments
bbq2_cb.FCStd
(366.83 KiB) Downloaded 12 times
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Shalmeneser
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Re: Scaled Pattern

Post by Shalmeneser »

:idea:
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Capture.PNG
Capture.PNG (11.62 KiB) Viewed 640 times
wasabi_fire
Posts: 2
Joined: Thu Nov 25, 2021 4:20 pm

Re: Scaled Pattern

Post by wasabi_fire »

chrisb wrote: Fri Nov 26, 2021 12:46 am Hi and welcome to the forum!

You could do it in Python, of course. With the GUI I would cut all to the border and then add an outer ring back. Before doing this, you should remove the small lines Edge5 to Edge8 in Sketch002. Such things can make the pocket fail.

The outer ring still shows remainders of the pockets, although I have refined the model. You can avoid this, if you make the first circle a little bit smaller.SnipScreenshot-adbe47.png
Thank you very much!

That make sense, I will try using the GUI.

Once again, thanks!
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