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Problem with Rail Sweep
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August 31, 2018, 02:35:57 AM
When I Rail Sweep the triangle, the apex always points towards the center of the 3D Polyline.  I am unable to get it to point towards the center of the frame.

I was able to do this before with a different project (and a different version of TurboCAD) by rotating the outline and re-applying the Rail Sweep, so I'm thinking I have forgotten something.


Thanks in advance for any assistance,

Jeff

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TC Pro Platinum 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1


* August 31, 2018, 03:12:46 AM
#1
To change the profile for 'rail sweep' so it cuts a groove, you need to reverse the 'z' direction.  The way I do it is, draw a box, set the workplane on a face of the box how I want it.  Select the profile and use place on workplane, this will change the 'z' direction (and x/y) according to the new workplane.   One can probably mess around with editing a workplane, but the above is a quick way.   
« Last Edit: August 31, 2018, 03:15:19 AM by Andy H »

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* August 31, 2018, 10:49:28 AM
#2
All I did was make a Mirror Copy of the profile, then that copy swept properly.

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John R.

V17—V21, 2015—2018
Designer, Deluxe, Expert, Basic, Platinum
RedSDK enabled, except in 2018
Windows 10, 64-bit


August 31, 2018, 03:05:31 PM
#3
All I did was make a Mirror Copy of the profile, then that copy swept properly.

That did not work for me.  Exactly the same result.  If it helps debugging, I rotated the triangle to be seen from the front, set the Workplane to Plane by Active View, then mirrored along the horizontal dimension.


Jeff

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TC Pro Platinum 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1


August 31, 2018, 03:11:09 PM
#4
To change the profile for 'rail sweep' so it cuts a groove, you need to reverse the 'z' direction.  The way I do it is, draw a box, set the workplane on a face of the box how I want it.  Select the profile and use place on workplane, this will change the 'z' direction (and x/y) according to the new workplane.

Tried several variations (different facet, rotating after Place on Workplane, etc.).  Got the same result each time.


Jeff

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TC Pro Platinum 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1


* August 31, 2018, 05:39:25 PM
#5
Here again I think Sweep is a better approach than Rail Sweep.

Henry H

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* August 31, 2018, 06:07:05 PM
#6
In the attached file shows how I did it, not saying its the right way, just 'appears' to work for me with rail sweep, if this is what you are after.

The blue arrows show the + z axes direction I'd expect the profiles to follow, two profiles required because going off your earlier picture, you mirrored the paths. I angled the profile to try and compensate for some twist, before applying place on workplane to set the z axes.  The extra 'dimple' I added to the profiles was just so I could see better when the rail sweep was roughly correct.

I've no idea if this helps or not.   I totally agree with Henry.  Sweep is often much easier to set up than Rail Sweep.

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September 01, 2018, 04:00:05 AM
#7
Here again I think Sweep is a better approach than Rail Sweep.

I have to agree.  With the proper placement of the triangle, I did not have to worry about rotation, although I did have to Join Polyline  with 3D activated to get it to work (got an ACIS Solid Intersection error when I tried to sweep along the lower right Polyline.

Thanks for the help,

Jeff

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TC Pro Platinum 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1


September 01, 2018, 04:01:42 AM
#8
I angled the profile to try and compensate for some twist, before applying place on workplane to set the z axes.

I wonder why my rotation of the profile didn't work.  Maybe I did that out of order (after the Place on Workplane instead of before).

Thanks for the help.


Jeff

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TC Pro Platinum 2018, 2017, 2016 & 2015 (all with LightWorks & RedSDK) & V21
System: i7-5820K @ 3.30GHz, ASRock X99 Extreme4, 16GB DDR4-2133 RAM, Gigabyte GTX 970, Samsung NVMe SSD 950 (256GB), Windows 7 Pro (64-bit) SP1