Full Version: modelling question

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Or a way that would work using a boolean instead of trimming would be to form a cutting object like this:



Then extrude your profile curves so that they go a little past the cutting surface:



Select the main object, run Boolean difference and select the cutting surface for the cutting object. That will divide it into 2 pieces, discard this piece:



And you'll have this left over:




- Michael

Image Attachments:
steve _bool4.jpg  steve_bool1.jpg  steve_bool2.jpg  steve_bool3.jpg 

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On the same subject...but more simple object...;)

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1 something different ... I fillet the piece first then draw 2 lines and trim to cut ...

2 and trim to cut ... a way to draw a piece more tangent to the round lunette

3 select the borders of the 3 pieces ( flat and 2 filleted ) and copy paste them

4 left - show points ... shows many points ... right I delete ( select a point and Sup on the keyboard ) a maximum of points

2 or 3 points are necessary to give a round shape to the lines ( in right and top view ) place the point where you need

here i do a mistake ... i've deleted the points which control the border of the fillet .. don't care .. it's just an example

5 in grey ... build networks ( 2 borders and a central surface ) warning the networks needs perfectly joined borders

so select the borders of each network ... click join ... and see at the right of the screen ... you need to see Closed curve

after join click separate ( the borders ) and build networks ( 3 or 4 borders each )

6 7 copy paste the 3 networks ( not the curves ) and on the lunette delete the 3 surfaces ( flat and filletted )

verify than snaps are on and glue the 3 pieces on the hole

select all the faces and join ... it's solid with " acceptable " fillets

PS to obtain a best quality , a best round shapes .. it should be nice to add a third cutting line and build a rounder shape ... why not

on the last pict .. in brown the mistake ... the fillets don't join ... cause I 've deleted the control point of the bottom fillet ... gné ;)

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Hi
I've just test it
1 Extrude
2 Trim profil
3 Boolean difference
4 Mirror and Boolean reunion
5 Flow
6 Fillet

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Corchet recycled model ;)

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and a little render

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Wow - thank you so much for all replies! - I will work on this later today - now I have a new understanding…

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Hi Steve, also check out this previous thread for some good tips on how to apply some bending:
http://moi3d.com/forum/index.php?webtag=MOI&msg=4471.1

- Michael

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something more organic

1 draw a close curve ... apply Rebuild
2 extrude a little bit... delete the cap face ... select the border
3 apply a script named Blendcap

the max value seems to be 2.5 but you can exceed the number ( here i wrote 12 ) to obtain a rounder shape

if the border of the blend is splitted ( red line ) use the Blend command

blend is better in some case ( the cut line to split the border can be placed where you want to generate various shapes )

blend surface need to be closed by Planar command ... select the 2 faces join ... it's solid and can be " booleanized " ;)

la booléanisation du schmilblick ;)

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@Michael

...indeed... :) :)

M

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I modeled these sunglasses based on images from an eyeware store on the web.

The modeling concept is basically the same used by Mauro and Michael, except I didn't use Flow to curve the frame.

I wanted to keep the two stubs that support the hinges at 90 degrees to the frame as the drawing specified. Curving the entire frame would change that angle, although I could have made stubs separately and Boolean them in place after Flowing the frame.

The method I used was to make two cutting surfaces (curved in two directions) from Sweeps using curved Profiles: One with the nose rest profile for the back of the frame (orange), and one to cut the face of the frame (magenta). The orange surface was Extruded forward, then Boolean Diff with the magenta surface.

The temples (arms) were made in one go from a two-rail Sweep using three profiles. No Booleans, fillets, or flow.

I like doing these little modeling exercises as I learn something new every time :)

Ed Ferguson

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@Ed
Cool glasses and material you applied to render

I readed my old post... after 10 years we are still here...Great!

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Mauro -

10 years ago I was learning how to sweep an oval around a circle to make a simple ring :) So I didn't give much attention to many of the postings of advanced techniques back then.

Now I search for topics and find some amazing information from the past! I started my own "Reference Book of Moi" in MS Word a few years ago by pasting text and images from various postings, sorted by subject.

Ed Ferguson

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