Help! How to make a spiral like a paper?

TIG

[off:25v2rhb7]Un chien mâle qui pisse, vu de derrière [/off:25v2rhb7]

pilou

Very conceptual avatar!

brookefox

Thanks for learnin' me a little, after which, for me, extrude edges by rails works best, simply because I could not make the length of the helix and the diagonal to match so shape bender had an annoying error (the little projecting tab). How to make these equal? Note also the disagreement about the length of the scaled helix curve info=112', label=245'. I assume the scaling threw a wrench in the works?

paper spiral-1.JPG

gilles

#1 draw the path ( helix )
#2 select it, open entity info to get the length
#3 draw the line the same length
#4 draw the diagonal sheet the same length
#5 draw the sheet with circle tool set to 4 segments ( if you want a square sheet )
#6 erase the diagonal
#7 group the sheet
#8 run shape bender.....wait....
#9 resize the model with tape tool. done

it takes five minutes.

brookefox

Thanks for that.

Sly:
@unknownuser said:

#5 draw the sheet with circle tool set to 4 segments ( if you want a square sheet )

Perhaps that method it is more accurate than 'extrude edges by rails' even if a little slower.

gilles

If your paper is square it's fast as you already have the diagonal.

mitcorb

Anybody tried Spirix on this? I am not sure if it can be applied here. Some more info, I think is in a thread back about 4months. As far as I know, the author doesn't post here.

brookefox

Heck, man. That thing looks real nifty.

spirixcode

The Chaos Trilogy: Better Life Through ACME Available in Kindle format and paperback from Amazon. Spirix Plugin for SketchUp (works with SketchUp 2015, 2016, and 2017) The Spirix Ruby plugin allows you to revolve or extrude any 3D sequence of edges (both open and closed loop) about or along the

(sites.google.com)

brookefox

I like your way because it has the rotated sheet (corner up). I cannot do it faster than EEbyR, though.

sheet rolled-1.JPG