# linear extrude thickness

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## linear extrude thickness

 This post has NOT been accepted by the mailing list yet. Dear all, I want to create a spiral with a square cross section. The following code         linear_extrude(height=51.84, center=true, convexity=10, twist=1866.24)                 translate([14.9075,33.8639,0])                         square([2,2],true); takes a square in x/y and extrude it in z however the cross section of the resulted line is a thin rectangle. How can I make it thicker, or force the 2D profile to be perpendicular to the extruded path? Thanks in advance Vasilis
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## Re: linear extrude thickness

 Try something like this, to see where it is going. And be aware that the cross section depends on the twist angle. I used a 90° section of a ring to get an easy solution. Try to change this angle to control the "height" of the cross section. \$fn= 100;                          linear_extrude(height=51.84, center=true, convexity=10, twist=1866.24)                         intersection() {   difference()   {     circle(38);     circle(36);   }   square(38); }
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## Re: linear extrude thickness

 Administrator In reply to this post by vasilis Hi Vasilis, Welcome to the forum. Your post is still flagged as "This post has NOT been accepted by the mailing list yet", so nobody gets it unless they look. You need to subscribe to the mailing list, and CLICK THE LINK in the registration email (check your spam folder). Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!
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## Re: linear extrude thickness

 In reply to this post by Parkinbot Thank you! I am simply wondering how it works? Vasilis
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## Re: linear extrude thickness

 In reply to this post by MichaelAtOz I've subscribed a few times, but I never received the email, neither it is in the spam Vasilis
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## Re: linear extrude thickness

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## Re: linear extrude thickness

 This post has NOT been accepted by the mailing list yet. In reply to this post by vasilis Ok I see I have to create the projection of the square cross section with the angle of the helix Thanks
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## Re: linear extrude thickness

 Administrator In reply to this post by vasilis vasilis wrote I've subscribed a few times, but I never received the email, neither it is in the spam Vasilis I'll send you an invite. Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!
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## Re: linear extrude thickness

 This post has NOT been accepted by the mailing list yet. Thanks it worked now.
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## Re: linear extrude thickness

 Administrator Vasilis, did you get the mailing-list invite? Admin - PM me if you need anything, or if I've done something stupid... Unless specifically shown otherwise above, my contribution is in the Public Domain; to the extent possible under law, I have waived all copyright and related or neighbouring rights to this work. Obviously inclusion of works of previous authors is not included in the above. The TPP is no simple “trade agreement.” Fight it! http://www.ourfairdeal.org/ time is running out!