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The Screw modifier is similar to the Screw tool in the Toolbar, in that it takes a profile object, a mesh or a curve, to create a helix-like shape. Use this tag for questions about the Screw modifier.

8 votes

Archimedes screw?

Working looking down Z, X across, pivot: 3D Cursor at origin. Start with a plane In Edit mode, GX it to the left, so its left side is at the desired radius of the screw in X, leaving the object's pi …
Robin Betts's user avatar
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5 votes

how to merge this? (First and Last Vertices)

Would recommend Deform before Solidify, so the Weld doesn't have to cover internal faces.. ...leaving no defects in normals. (Also, for less experienced users, note the angle of Bend is a soft limit: …
Robin Betts's user avatar
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5 votes
Accepted

Flipping vertex / edge normals issue

Vertex normals are calculated from some function (usually the average) of adjacent face normals. In the absence of faces, they default to direction-from-object-origin. So the display of normals in a f …
Robin Betts's user avatar
  • 78.8k
4 votes

Cant select edges created by the screw modifier

You can't reach the the other vertices, because in a sense, there are no vertices there. What is there is a process: a set of instructions for generating vertices from the source geometry, expressed a …
Robin Betts's user avatar
  • 78.8k
4 votes

How can I create a boolean mesh to replicate the movement of a milling bit?

This might not be quite what you're looking for, but come back (comment) if it isn't.... I'm starting with a 32-sided cylinder, Z-up, rotated RZ in edit mode by 360/64, so its flat sides face down X …
Robin Betts's user avatar
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3 votes

How can the Screw modifier be implemented using Geometry Nodes?

One of the advantages of the Screw modifier is that, with adjustment, it can give nice clean topology on a helix, with parallel subdivisions along the twist-axis, and relatively clean quads. Here's a …
Robin Betts's user avatar
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2 votes
Accepted

Question on creating a spiral

That's true.. the Screw modifier doesn't seem to know how to display itself in Edit Mode, unless there are faces to display. The screw of a single Mesh vertex is there, if viewed in Object Mode.. an …
Robin Betts's user avatar
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2 votes

How to create razor wire

There are 2 problems to solve: To distribute the barbs evenly along the length of the curve To do so without distorting the barbs This used to be a typical use for Dupliframes, but they has been r …
Robin Betts's user avatar
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2 votes
Accepted

Blender 3.x screw across uneven cylinder

This isn't so much an answer as an example workflow for a one-off.. plenty of other ways would be just as good, I'm sure.. This case is deliberately a bit awkward.. non-circular profile, varying diame …
Robin Betts's user avatar
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2 votes
Accepted

What causes the screw modifier to fail and create black 2d slice from a bezier curve?

I suspect you've scaled the curve to 0 in one dimension or another, in Object mode, to flatten it. If the object carries that transform, it still will, after being modified. Ctrl A > Apply the scale o …
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1 vote
Accepted

How do I keep the curve round when setting the threads farther apart?

When you increase the Screw setting and stretch the screw, you increase the slope of the helix. Unfortunately, the modifier doesn't automatically tilt the profile correspondingly, so the profile isn't …
Robin Betts's user avatar
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1 vote

How can I create a boolean mesh to replicate the movement of a milling bit?

There's another approach I was hesitant to post, because (at least on my not-so-poky machine) it's hard to get the resolution high enough to get clean results, although some judicious use of the Decim …
Robin Betts's user avatar
  • 78.8k
1 vote

How to Add Dimpled Holes to Textured Bar Tape w/ Screw Modifier?

If you construct your handlebars, at least initially, from the native (round) 'Bevel' of a curve,set in its Data tab > Geometry panel, you can use the same curve to deform the spiral of tape. If you …
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0 votes
Accepted

Screw Modifier On Top of Shape Key

You probably need to set the 'Flip' checkbox in the Screw Modifier. ;)
Robin Betts's user avatar
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0 votes

Issue with the screw modifier: unable to move an animated curve

In the neutral position, (so you know where to go back to, if you want,) create another Empty at the origin. Maybe make it sphere-shaped, and make it a bit bigger in its Data tab, so you can see it e …
Robin Betts's user avatar
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