Creating a model from a real life object?
 
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Steven
(@steven)
Active Member
Creating a model from a real life object?

I would like to print this lamp base.
The author states to "model" the bulb socket into the included socket template.

how exactly do i take my e27 bulb socket holder and just turn it into a model that i can make something usable here? i take it's not just simply taking a photo of it and clicking a button in an application and wallah, i have a 3D model..

i trying to learn, but having a bit difficulty looking for the info/tools i need to do this. do i need to go out and buy a $1000 laser scanner?

I have fusion 360 and just recently installed openSCAD. any helpful pointers would be helpful.

 

This topic was modified 2 years ago by Steven
Posted : 29/03/2022 11:10 pm
Diem
 Diem
(@diem)
Illustrious Member

He claims to provide a cutout for an E27 but fails to say which manufacturer ... the E27 standard deals with the bulb base not the socket's external dimension.  Now you could scan the part but cleaning up a scan is probably more work than designing from scratch.

Acquire a suitable socket and measure it.  Most are a cylindrical form with one or more retaining rings/flanges.

The designer suggests you make a mock-up of the socket and subtract it from the model - here's how you might do it with a blank ...

Create an openSCAD module to make a dummy socket - just the external dimensions.  Something like this (yours will be different):

flangewidth=36;

flangedepth=1;

externaldiameter=32;

bodydepth=30;

tolerance=1;

$fn=50;

dummysocket();   // call to visualise

module dummysocket(){

cylinder(d=flangewidth+tolerance, h=flangedepth);

translate([0,0,flangedepth]){

cylinder(d=externaldiameter+tolerance, h=bodydepth);

  }

}

The forum software messes up the formatting, sorry.

Then you use your module to cut the correct shaped hole in your model, I'll just cut a hole from a block.  Replace the visualisation call with this insert:

verticaltolerance=0.25;

difference(){

cube([50,50,25]);

translate([25,25,25+verticaltolerance]){

rotate([180,0,0]){

dummysocket();

  }

}

}

... and you have a shaped hole ready for your socket.

Cheerio,

Posted : 30/03/2022 3:25 am
ZombiPach liked
damon
(@damon)
New Member
RE: Creating a model from a real life object?

Hi Steven,

Scanning isn't as easy or accurate as the advertisements make it seem. You can definitely have some fun using your phone and photogrammetry apps but internal parts of models are tricky when scanning due to the lack of angles you can scan at.

Hopefully Diem's code worked for you but if not, there are a lot of videos on youtube for fusion 360. Your best friend may be the 'dimensions' feature as that makes it easier to make tweaks to your designs afterwards until they suit your needs.

If you need further help, let us know

Good luck

Posted : 30/03/2022 5:59 am
Lichtjaeger
(@lichtjaeger)
Noble Member
RE: Creating a model from a real life object?

https://blog.prusa3d.com/photogrammetry-2-3d-scanning-simpler-better-than-ever_29393/

Posted : 30/03/2022 7:06 am
ZombiPach
(@zombipach)
Eminent Member
RE: Creating a model from a real life object?

Someday maybe though:

https://screenrant.com/nvidia-ai-instant-nerf-2d-photos-3d-demo/amp/

Posted : 13/04/2022 3:58 am
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