Modeling Question

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ldboehm
Posts: 88
Joined: Wed Jun 13, 2018 3:49 pm

Modeling Question

Post by ldboehm »

I am getting better at FreeCad and have designed many things...but I'm venturing into a totally new level.
Can anyone provide help on approach, or even give a shot at modeling this?

Attached are pictures of what I'm trying to model with multiple views.
This is a molding from a car that goes inside the car, up the side of the windshield.
I am trying to build a 'cap/cover' to go over the part in the red square so I can re-attach to the car. The part with the broken screw hole (pointed to with the arrow) is why I need to build a cap/cover.

Anyone want to accept the challenge or point me in the right direction?
Thanks
Attachments
2. Bottom.jpg
2. Bottom.jpg (70.62 KiB) Viewed 2180 times
4. Side 2.jpg
4. Side 2.jpg (151.87 KiB) Viewed 2180 times
5. Front.jpg
5. Front.jpg (115.53 KiB) Viewed 2180 times
1. Top.jpg
1. Top.jpg (180.05 KiB) Viewed 2180 times
3. Side 1.jpg
3. Side 1.jpg (120.03 KiB) Viewed 2180 times
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bejant
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Re: Modeling Question

Post by bejant »

The plastic tore out around the mounting screw? Would you consider using what we call in the United States a "fender washer" to bridge the torn hole instead?
ldboehm
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Re: Modeling Question

Post by ldboehm »

The tear is quite large and the otherside it worse. It is from a very old car, so no chance of finding a replacement.
But building a 'cap' to cover the top would be a decent solution.
chrisb
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Re: Modeling Question

Post by chrisb »

To repair it I would glue some glas fiber reinforced plastic from the back - thin enough to be bent - and some leather from the front. Nevertheless it's a challenge to model it in FreeCAD. Looks rather like some blender stuff.
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papyblaise
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Re: Modeling Question

Post by papyblaise »

What sorte of material is that : ruber or plastic :?:
If plastic you can use a small piece and glue them
If ruber you can use a piece of tire repair
I know that is exist a data base for pieces of cars for some of model to print it in 3D, but i don't know ware
ldboehm
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Re: Modeling Question

Post by ldboehm »

thx for the replies and suggestions.
It is a hard plastic. I was hoping to model and 3D print a 'cover'
It is off of a 1980 Toyota Celica...definitely a challenge to model for sure.
drmacro
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Re: Modeling Question

Post by drmacro »

chrisb wrote: Thu May 07, 2020 6:11 am ... Nevertheless it's a challenge to model it in FreeCAD. Looks rather like some blender stuff.
I'm sure if could be done somehow in FreeCAD.

But, I'm with chrisb, looks like Blender would be a better tool. :roll:
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ldboehm
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Re: Modeling Question

Post by ldboehm »

I'm gonna give Photogrammetry a try.
Thx everyone!
drmacro
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Re: Modeling Question

Post by drmacro »

ldboehm wrote: Thu May 07, 2020 1:18 pm I'm gonna give Photogrammetry a try.
Thx everyone!
Still gonna need a tool to manipulate the point cloud. But that's probably a good way to get the general shape.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
RatonLaveur
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Re: Modeling Question

Post by RatonLaveur »

I wonder if photogrammetry using your smartphone and Blender could allow you to get a rough STL file that you can then refine based on point measurements...
Alternatively, if you're a hands-on kind of guy, I would suggest a rough over-molding of an epoxy based resin with the properties you're looking for (not brittle, some flexibility I assume...etc), followed by sanding to the correct shape and fastening using a washer for reinforcement.

If you have access to a CNC you may use it to probe your part in multiple points and make a point cloud, that you can then reprocess in FreeCAD.
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