Need Help on SPIRALOID SHAPE

smartsizer

Yes, the diagonals are drawn by hand. Details are shown in the Scenes in the attached skp. Scenes 24 and 25 illustrate a method I discovered to manipulate points in a mesh.

HorseshoeStair tutorial.skp

GreyHead

My spiral was something like:
K2 Graphs | 2D-Graph polar r=f(p)
p-range from: 0.0 (default)
p-Range to: 25.132741 (i.e. 8*pi)
Stepwidth: 0.06283185 (default - 100 steps per turn)

r = p**2 (default)

Then scale down to a useful size.

Bob

GreyHead

Bien fait ! Bravo !

Bob

PS You can get rid of those 'blue' segments at the bottom by selecting a 'white' area, right click and choose 'orient faces'.

simon le bon

THAT'S IT!

@unknownuser said:

Here is my HORSESHOE STAIR with volute ramps.

The volute and the leading help of GreyHead, a working direction to follow by smartsizer, many mistakes repaired by fox hack, pair of things i haven't understood at all, and at last, still lot of hard handmade work!!

(as you can see here)

(if someone is interested by this laborious travel: DivShare File - HorseshoeStairFinal.skp

All my thanks (in order of apparition) to: Greyhead Gaieus smartsizer Tig Boofredlay. You where incredibly kind and perseverant by my side.

At the end, smartsizer have given us a so beautiful lesson of drawing: so many strong solutions HorseshoeStair tutorial.skp. It surely have to be sent as a single post on the How To section: for great advantage of everybody interested in Sketchup (and 3D) modeling.
. Well, for horseshoe stair, it's over. But i have another project i shall call "The Everythingcurved Stair". Just the good matter to take off with it.

                 simonlebon

.../...

Wo3Dan

Simon,

I see that you finished your horse shoe shaped stairs, resulting in a very nice model.
Thanks for sharing. Looking forward to what curved complex shape you have in mind now.

cheers,
Wo3Dan

Voder Vocoder

Here's another variation:

(www.datafilehost.com)

~Voder

simon le bon

Dear Voder Vocoder

WAHOUUU! what a pure splendid way to reach the end..

Lot of hand made too, as sculptor work, but with each step simple, beautiful..

How many ways left to do the job? This topic is becoming a Top Master Class lesson of drawing.... Happy!

PS: I allow me to put your VoderVocoder_HorseshoeStair SKP file on DivShare
To allow permanent access. Because with Data File Host:
"Your file is hosted forever as long as it gets downloaded at least one time every 30 days"

smartsizer

Voder---very nice!!

TaffGoch

Simon,

When I stumbled across this image while web-surfing, I immediately recalled your discussion thread:

This is a violin in-the-making. There are even more curved and 'dished/cupped' surfaces evident here. A prospective thought-provoker for your 'Everythingcurved Stair'?

Regards,
Taff

simon le bon

Dear TaffGoch,

Please to meet you. So kind to you for thinking about this topic and bring back from your surf this woodmaker volute. Appreciate a lot.
Well, in another way, i cannot go back right now: i must do the job. This everythingcurved Stair is in my head. I just need further little time to work on tuts i found here and there on SFC before begin.

slb