[done] Developing a spreadsheet based loaf pan

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papyblaise
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Re: Developing a spreadsheet based loaf pan

Post by papyblaise »

Ulicad
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Re: Developing a spreadsheet based loaf pan

Post by Ulicad »

This is known here - it did not help me, just can't male this work..
Regards, Ulicad / Uli
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papyblaise
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Re: Developing a spreadsheet based loaf pan

Post by papyblaise »

me neither :lol: :lol:
I never use Draft wb for sketch 2D but sketcher
Ulicad
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Re: Developing a spreadsheet based loaf pan

Post by Ulicad »

Hello @Shalmeneser,
could you confirm from your experience, that this is true? It would end my hours of searching about Trimex to extend a line to a face/surface for good.

If yes, and this is understood correctly by myself, do you have an idea about the reason(s)?
.
.
you-cannot-extend-a-line-to-a-face.png
you-cannot-extend-a-line-to-a-face.png (93.06 KiB) Viewed 1243 times
Regards
Uli
Regards, Ulicad / Uli
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Shalmeneser
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Re: Developing a spreadsheet based loaf pan

Post by Shalmeneser »

Je dirais même plus, I never use Draft wb for sketch 2D but sketcher.
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Roy_043
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Re: Developing a spreadsheet based loaf pan

Post by Roy_043 »

Note that freecad.info is not an official FreeCAD site.
Ulicad
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Re: Developing a spreadsheet based loaf pan

Post by Ulicad »

Roy_043 wrote: Sat Feb 18, 2023 10:45 am Note that freecad.info is not an official FreeCAD site.
Thank you for the info - I wondered about.

Would you have a confirmation to the matter as such? (Still struggling a lot with terminology..)
Regards, Ulicad / Uli
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Roy_043
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Re: Developing a spreadsheet based loaf pan

Post by Roy_043 »

The Draft_Trimex command can only find intersections with edges. But I do not see how that command can be useful in this context.
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Roy_043
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Re: Developing a spreadsheet based loaf pan

Post by Roy_043 »

My suggestion is attached. See Basic_Part_Design_Tutorial_019 for some of the concepts used.

Note that @papyblaise is cutting some corners in his model resulting in out of scope links. This is not advisable.
Attachments
loafpan_roy.FCStd
(112.14 KiB) Downloaded 25 times
Ulicad
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Re: Developing a spreadsheet based loaf pan

Post by Ulicad »

Hi everyone,
since I learned that the extrusion of a non closed line or plolyline to a surface or face can not be achieved by a reguar command in FC, the conceptual approach for an effective and conformant creation of the pan needs to be changed accordingly.

The approach intended until now was:
  • create the inner contour of the pan as a non-closed polyline, including the fillets on the bottom (compare the OP)
  • extrude this contour into a surface (face)
  • pad this face to result in a solid (provided padding of a non-planar surface is legal..)
  • create 6 nos. of identically shaped cutouts in the pan
  • apply chamfers as needed
The changed approach is:
  • create a full cross-section of the pan, including the fillets on the bottom
  • extrude this closed polyline into a solid
  • create 6 nos. of identically shaped cutouts in the pan
  • apply chamfers as needed
.

The difference of the above approaches may not be as 'dramatic' as I felt - can not truly judge as a noob..

Compared to the old approach, the new one needs approx. double the no. of lines, which I feel is a lot and clutters the tree. Especially when considering, that a line can not receive a fillets on either side, but must be divided into two lines to achieve this.

Your remarks to the now intended approach is very welcome and helps me to understand FC better!

Regards
Uli

Thanks Roy for your labour! Our posts practically crossed and I shall have a good look into it!
Regards, Ulicad / Uli
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