help for a newb

[stnkyfnga]

hey, im trying to recreate my bike frame in 3d, its the first thing ive tried to make without following a tutorial , i have no idea how to go about making the welds where the tubes meet (i mean mean making the illusion of the metal welds from real life, not welding vertices) please help somebody? thanks...

[stnkyfnga]

hey, im trying to recreate my bike frame in 3d, its the first thing ive tried to make without following a tutorial , i have no idea how to go about making the welds where the tubes meet (i mean mean making the illusion of the metal welds from real life, not welding vertices) please help somebody? thanks...

[jens g.r. benthien]

I really don't know why you chose the name 'stinkyfinger' in a slang version <sigh>, but that's your problem. I just wonder about the society in highly developed and so called civilized countries going down the gutter.

Usually a bike frame features thicker tubes at the joints, so the beams will be inserted into the joints and then welded. However, with today's laser technology many manufacturers - at least in Europe - don't use this type of 'connection muff' anymore. The beams will be lasered to the joints as the following pic shows: blending surfaces (if your application offers this feature).

Is this what you have in mind?

jens g.r. benthien
designer
http://www.sacalobra.de

----------//--
If you don't know how to dream you'll never be a designer.
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[stnkyfnga]

well i really dont know much about the way bicycles are made, i was just trying to make it it look fairly like it does in real life. i used a tape measure and calliper to measure the dimensions and a picture of the bike in the perspective veiwport to roughly get the angles down. it is by no means exact. here is a picture of the actual frame from the manufactures website and also a picture of the way the weld looks at the joints, thanks for the help though...

[jens g.r. benthien]

to achieve this effect you need to pick the last isoparm of the tube and let an ellipse flow along the isoparm. Then add a texture and it'll have the look you want.

However, I don't know if your app does have the feature to pick isoparms - this is a feature of 'heavy duty' CAD software.

pic 01: extract the isoparm
pic 02: flow an ellipse around the isoparm
pic 03: shaded view in openGL

jens g.r. benthien
designer
http://www.sacalobra.de

----------//--
If you don't know how to dream you'll never be a designer.
----------//--

[stnkyfnga]

thanks that looks good, i just have to find out if i have that feature... im using 3ds max 3.1. thanks for your help

[s.winders]

Another way is I take the tube and cut straight through the sucker and then once more for the join,then you scale out the polys or points in the new section



Is that Rhino jens?



Stu.

[jens g.r. benthien]

yup, this is Rhino.

Your approach for C4D is great, but it lacks the curvature of the welding part. In Rhino you can modify the ellipse until you achieve the 'bulge' you need ;-}

jens g.r. benthien
designer
http://www.sacalobra.de

----------//--
If you don't know how to dream you'll never be a designer.
----------//--

[s.winders]

Hmmm ok one cut then and agressive use of a hyper nurb



Rhino does do a nice easy job of that frame join though I have to admit


Stu.

[s.winders]

Nah that wont work either I see your point jens