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I'm trying to create a circular saw blade like the one pictured here, which I grabbed off blendswap.

enter image description here

I thought I might be able to create the handles for one of the teeth, then spin around the origin for the rest - there is no spin tool for curves though.

Is there a way to create this saw blade, without scripting?

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2 Answers 2

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  1. Model a single tooth.
    tooth

  2. Add an Array modifier, and a Curve modifier to that tooth object.

  3. Add a new circle curve ShiftA > Curve > Circle

  4. Set the Fit Type of the array modifier to Fit Curve, and target the Bezier Circle (added in step 3). Also set the Object of the curve modifier to the Bezier Circle.
    modifiers

If the teeth overlap, you can scale the circle to get the teeth to line up perfectly.

saw blade

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  • $\begingroup$ +1 from me. Your technique is much better than mine. The advantage is you can easily and precisely adjust the radius of the wheel and the size of the teeth. $\endgroup$
    – Paul Gonet
    Commented Aug 8, 2015 at 19:55
  • $\begingroup$ Is it possible to make this a solid disk (with a hole in the middle) without applying the modifiers? $\endgroup$
    – ajwood
    Commented Aug 11, 2015 at 23:43
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Add a Bezier Circle (Add-->Curve-->Circle) and delete one of its vertex. enter image description here

Select the whole curve and press Alt+C to open it up. enter image description here

Shape the curve to make it look as a grinding wheel tooth. Use V button to change the handle type, so you may for example make the teeth sharper. enter image description here

Add an Empty, then set the Array Modifier for a curve (with the settings pictured below). Set the Count amount as desired. Rotate an Empty to create a grinding wheel. Now changing the shape of a one tooth will affect every other one. enter image description here

In Object Mode press Alt+C to convert your curve to a mesh. enter image description here

If you need more teeth, increase the Count amount and scale the curve to make the teeth fit each other. Enable a First Last checkbox to merge the first and the last teeth. enter image description here

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