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Need help with helix.
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* October 16, 2010, 06:53:47 PM
I have made a one turn helix in 2d and I would like to snap lines to it but no matter what I try nothing works. Is this possible. turbocad 16 deluxe

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* October 16, 2010, 06:56:47 PM
#1
I have made a one turn helix in 2d and I would like to snap lines to it but no matter what I try nothing works. Is this possible. turbocad 16 deluxe

I'm having trouble understanding what a helix in 2d is. Can you post the drawing?

Henry H

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* October 16, 2010, 07:20:17 PM
#2
I guees it's not realy a helix in 2d more like a spiral but there is no spiral button.

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* October 16, 2010, 08:38:42 PM
#3
If you explode the TC helix, it turns into a spline. Then the projection and tangent snaps will work with the spline. Maybe other snaps as well. Don't know if that gets you where you want to go, of course.

Mark

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TCW Pro 14.2
TC Deluxe 16.2 Build 53.2


* October 16, 2010, 08:58:46 PM
#4
I guees it's not realy a helix in 2d more like a spiral but there is no spiral button.

Explode it one time, which will convert the object to a Spline. Then you can use the Perpendicular Line tool (see attached screenshot); or Line Tangent to Arc or Curve; or Line Tangent From Arc or Curve; or the plain ol' Line too, using the Nearest on Graphic snap mode ...and no doubt I've overlooked other possibilities.

But how in the world did you manage to get a Helix into a Deluxe drawing in the first place? It's supposed to be available in Pro only.

Henry H
« Last Edit: October 16, 2010, 09:01:46 PM by Henry Hubich »

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* October 17, 2010, 07:17:44 AM
#5
Thanks mark and henry, I have it working perfectly now. They must of messed up on the delux since the helix is in my tool bar. Guess I got my moneys worth. ;D

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* October 17, 2010, 09:37:25 AM
#6
Thanks mark and henry, I have it working perfectly now. They must of messed up on the delux since the helix is in my tool bar. Guess I got my moneys worth. ;D

I wonder what other illicit goodies they smuggled in ;-)

Henry H

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* October 17, 2010, 10:33:12 AM
#7
Hi Henry et al,

How do you know what is/isn't supposed to be in a program? I've noticed that the labeling in the reference manual sometimes says a tool is "pro only" -- but I assumed they put that in before developing the "deluxe" line.

Its in my toolbar as well. Its a 3D object, but doesn't render in draft mode, so its only the framework for working in 3D. It seems fair to have it, since there is no 2D spiral tool. Overall, I would rather have the "millions of symbols" it promises on the box, that are nowhere to be found.

I wonder if I could use the helix as a rail to make a screw thread? It would be mostly for appearance -- I'm not actually going to start lathing out my own small parts.

Thanks!
Mark
 

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TCW Pro 14.2
TC Deluxe 16.2 Build 53.2


* October 17, 2010, 06:42:10 PM
#8
Hi Henry et al,

How do you know what is/isn't supposed to be in a program? I've noticed that the labeling in the reference manual sometimes says a tool is "pro only" -- but I assumed they put that in before developing the "deluxe" line.

Its in my toolbar as well. Its a 3D object, but doesn't render in draft mode, so its only the framework for working in 3D. It seems fair to have it, since there is no 2D spiral tool. Overall, I would rather have the "millions of symbols" it promises on the box, that are nowhere to be found.

I wonder if I could use the helix as a rail to make a screw thread? It would be mostly for appearance -- I'm not actually going to start lathing out my own small parts.

Thanks!
Mark
 

In the case of the Helix, I had two reasons for stating it's not supposed to be in Deluxe. Turns out that neither reason is valid :-(

The problem with using a helix as a rail (i.e., path) to create a screw thread, by sweeping a profile along it, is controlling the orientation of the thread cross section. It's difficult but doable in Pro. In Deluxe I was not able to do it at all. A much simpler way to create a screw thread is with the Revolve tool, adjusting the pitch and number of turns as required. This works equally well in Pro and Deluxe.

Henry H

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