Extrusion d'une forme scannée complexe

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amarilisppt
Posts: 48
Joined: Mon Apr 08, 2019 8:24 am

Extrusion d'une forme scannée complexe

Post by amarilisppt »

Bonsoir,
j'ai scannée une forme assez complexe (.step) et l'ai importée sous FreeCad. Pour pouvoir la manipuler aisément, je l'ai transformée en solide, qui contient donc beaucoup de faces.
Je chercher à épaissir cette pièce (voir fichier joint), mais n'arrive pas à l'extruder selon la normal ou, à défaut selon z. Pourriez-vous m'aider svp?
Note: le fichier FreeCad est trop lourd pour être joint, donc j'ai pris une copie d'écran de cet objet et du trièdre, en espérant que cela vous siffse déjà à voir ma problématique.
Merci d'avance.
Bien cordialement
Attachments
Copie d'écra, de l'objet à épaissir/extruder
Copie d'écra, de l'objet à épaissir/extruder
ExtrusionScan.JPG (47.18 KiB) Viewed 1356 times
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Shalmeneser
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Re: Extrusion d'une forme scannée complexe

Post by Shalmeneser »

To write in french, please use french forum.
Pour écrire en français, il faut choisir le forum français qui est très compétent. Ce post va sans doute être déplacé.
amarilisppt
Posts: 48
Joined: Mon Apr 08, 2019 8:24 am

Re: Extrusion d'une forme scannée complexe

Post by amarilisppt »

Thanks and sorry. I was on the French forum but do not understand why my post was driven to the whole Forum. How to proceed to first focus the post to a dedicated forum?
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Shalmeneser
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Re: Extrusion d'une forme scannée complexe

Post by Shalmeneser »

Forum administrators ... or translate your first post.
chrisb wrote: ping
amarilisppt
Posts: 48
Joined: Mon Apr 08, 2019 8:24 am

Re: Extrusion d'une forme scannée complexe

Post by amarilisppt »

Hi,
OK, here you are. I scanned (3D) an object and imported the .step file into FreeCad. Then, transformed it into a solid shape in order to be able to add other shapes, geometries, etc... within Freecad: works very well.
I now would like to give more thickness to this object, i.e. like an extrusion through the Oz axis. How to do?
I tried extrusion (although this is not a face), a sweep and an homothetic (Draft menu), but none gives the expected result.
Thanks. Photo again, as the FreeCad file is too large.
Best regards
Attachments
ExtrusionScan.JPG
ExtrusionScan.JPG (47.18 KiB) Viewed 1230 times
amarilisppt
Posts: 48
Joined: Mon Apr 08, 2019 8:24 am

Re: Extrusion d'une forme scannée complexe

Post by amarilisppt »

Hi, everyone.
No idea form anybody or is my description not clear enough?
Thanks for your collaboration.
Regards
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Shalmeneser
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Re: Extrusion d'une forme scannée complexe

Post by Shalmeneser »

amarilisppt wrote: Fri Oct 15, 2021 7:53 am Hi, everyone.
No idea form anybody or is my description not clear enough?
Thanks for your collaboration.
Regards
Write the first post title in english. (How to scale .STEP ?)
Last edited by Shalmeneser on Fri Oct 15, 2021 10:21 am, edited 1 time in total.
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Shalmeneser
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Re: Extrusion d'une forme scannée complexe

Post by Shalmeneser »

amarilisppt
Posts: 48
Joined: Mon Apr 08, 2019 8:24 am

How to scale a. step in only one direction?

Post by amarilisppt »

Thanks. Thats is what Y tried (cf. "homothetic" in my post), but it modifies the shape of the object if I asked for Oz upscale.
But, now, according to your proposal, I wonder if the initial point I enter (0; 0; 0) is actullay right or this one doesn't lead to this mistake. Perhaps should I select the center of the object. What do you mean?
Thanks.
amarilisppt
Posts: 48
Joined: Mon Apr 08, 2019 8:24 am

How to scaleup a .step in only one direction

Post by amarilisppt »

Indeed, as the Mesh_scale is an homothety and not a translation, the shape is not maintained (cf. picture). I am trying with a center far away form hte object but it takes a lot of time and is still running. If you have other ideas, welcome!
Thanks.
Attachments
MesScalex2OnzOnly.JPG
MesScalex2OnzOnly.JPG (84.14 KiB) Viewed 1017 times
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