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 Post subject: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 2:03 am 
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VCarve Apprentice

Joined: Mon Mar 30, 2009 1:28 am
Posts: 47
Location: Diamond Lake, WA
I've been trying to create a 1" radius fillet on each corner of the attached vectors. For some reason it won't let me select the corners. Is there a way to get a 1" radius on the corners of this?

TIA


Attachments:
5 peg hanger.crv3d [46 KiB]
Downloaded 38 times

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Don
Diamond Lake Custom Woodworks, LLC
http://www.dlwoodworks.com
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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 2:07 am 
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VCarve Wizard

Joined: Thu May 18, 2006 3:24 pm
Posts: 1916
Location: Hendersonville, NC
Don,

The fillet tool only works with straight lines, not arcs or beziers.

You might try placing a circle in the corner and then using the trim tool.

Tim


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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 2:18 am 
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VCarve Wizard
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Joined: Mon Sep 19, 2005 11:09 pm
Posts: 1652
Location: North Manchester, Indiana
Hi Don,
Tim is right, if one of the lines is either an arc or bezier curve the fillet won't work.
Here is an eps that I created, check the dimensions to make sure its the right size.


Attachments:
5 peg hanger.eps [1.31 KiB]
Downloaded 18 times

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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 2:55 am 
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VCarve Apprentice

Joined: Mon Mar 30, 2009 1:28 am
Posts: 47
Location: Diamond Lake, WA
Thanks Tim and Don,

I've had no luck getting the circle to position properly so that the trim will take out the right vectors. I created a 2" radius circle and tried trimming and the rest of the arched rectangle disappeared and the circle remained.

Are there some snap points that come into play for something like this to get tangents of the circle to snap to the lines to create vectors that can be trimmed?

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Diamond Lake Custom Woodworks, LLC
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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 9:36 am 
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VCarve Wizard

Joined: Thu Nov 23, 2006 2:19 pm
Posts: 706
Location: Surrey, UK
What I do for something like this is the following:

1. Convert the bezier top and bottom on one side to a line.

2. Add the fillet.

3. Convert the lines back to beziers.

4. Convert the fillet (arc) to a bezier.

5. using the unchanged side as a guide line up the bezier handles (node select, highlight, press Y) to get the curve to match.

6. Line up the bezier handle on the fillet for a smooth flow with those in step 5.

7. Cut the shape in two, delete the unconverted half, mirror the new half and join.

A lot easier to do than say. It took a lot longer to type it out than to do. Another option would be to do just one corner of the shape and mirror the other three.


Attachments:
5 peg hanger.crv3d [46.5 KiB]
Downloaded 9 times
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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 11:42 am 
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VCarve Wizard

Joined: Thu May 18, 2006 3:24 pm
Posts: 1916
Location: Hendersonville, NC
Here is how I did it, no right or wrong - just another method.

Roughly position your circle in a corner
Add a node just past where the circle would intersect
Convert new segment to a line
Use Fillet tool
Delete circle (or move to next corner)

Tim


Attachments:
Fillet corner.JPG
Fillet corner.JPG [ 58.51 KiB | Viewed 14 times ]
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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 12:33 pm 
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VCarve Craftsman

Joined: Thu Feb 26, 2009 4:04 am
Posts: 184
Location: Uvalde Texas
In this situation I do it a little different also, to keep the exact curvature blended.

1. cut all vectors at corners.
2. scale the lines 1 inch shorter to give you 1/2 inch shorter at each end.
3. choose 2 vectors and use the join vectors with a smooth curve icon this will close this vector.
4. do three corners, the fourth will not close because it is a continuous vector.
5. cut one curve vector, copy mirror it, flip it and put it in the last corner and join the vectors with a line.
or

3. choose a short straight vector
4. cut vector in half, cut a small piece out of the vector
5. choose two corner vectors, use the join vectors with smooth curve, close all corners
6. choose short that with a small piece out of it and close vector with line.



Roy


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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 1:43 pm 
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Vectric Staff
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Joined: Mon May 16, 2005 10:15 am
Posts: 1091
Location: Redditch U.K
The easiest way to do this is ..

1) Select original vector
2) Offset inwards by 1"
3) Select offset vector
4) Offset out by 1"

This will have created a vector with 1" internal fillets in all corners. Beziers will have been changed to a series of straight lines but the 'Fit Curves to Vectors' tool can be used to replace them.

This method is useful even if you only want to fillet a single corner as it will create the fillet arc in the right place ready for you to use node editing to splice it into the original profile.

Brian


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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 1:50 pm 
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VCarve Wizard

Joined: Thu Nov 23, 2006 2:19 pm
Posts: 706
Location: Surrey, UK
Now why didn't I think of that.... :roll: :wink:


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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 3:24 pm 
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VCarve Wizard

Joined: Sat Jan 10, 2009 12:38 am
Posts: 1555
last night.. or rather this morning i made a file on this.. but eventually i did not post..

and reason was, because recently twice happened, the original posters stated """i don't need so precise"""

and i have two point on this.. if it not important so precise...still i make a lot things by hand, just cut off a piece of board an so on.. however i like cam, like as it is precise and makes everything i imagine..

the other point the programs... this fillet function is not the only...
and the question is, why functions are not """universal""... i mean like fillet works only conditionally... only with straight lines..

of course brian will know the solution... but it would be great to see this programmed and working in aspire...

and finally here's i made... yes the offset the way, as any drafter should make it with ruler and circle..

and on thisparticaular sample also can be question, why we don't have intersection snap?
the already working scissor, or trim function based on intersection..

the tangent snap also would be solution for this..

the simple offseting fillet all corner.. also makes million segments... with proper snap functions we don't have to change the original contur, also fillet can be made partially along a contur, or even only one..

pictures, offset inside, and exploding for segments the contur
offset only segments out side
unifying the corners (they give center for cornerarcs) and the outer offseted segments

boolean, keeping the overlapped parts,
unifying with arcs..

yes it is very tedeious... the simplest would be if aspire makes it without user would need drafter degree..

this way the original vectors are kept, and corners are filleted... for user the simple to clicking on a button...

viktor


Attachments:
new-1.jpg
new-1.jpg [ 96.42 KiB | Viewed 29 times ]
new-2.jpg
new-2.jpg [ 104.37 KiB | Viewed 20 times ]
new-3.jpg
new-3.jpg [ 97.79 KiB | Viewed 18 times ]
new-4.jpg
new-4.jpg [ 127.48 KiB | Viewed 18 times ]
new-5.jpg
new-5.jpg [ 119.67 KiB | Viewed 26 times ]
5 peg hanger R0_5.eps [1.11 KiB]
Not downloaded yet
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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 4:28 pm 
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VCarve Wizard

Joined: Thu May 18, 2006 3:24 pm
Posts: 1916
Location: Hendersonville, NC
Thanks Brian,

See what happens when you spoil us with features like the Auto Inlay Tool - we forget the tricks :D

Tim


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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 5:34 pm 
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VCarve Apprentice

Joined: Mon Mar 30, 2009 1:28 am
Posts: 47
Location: Diamond Lake, WA
WOW!

Thank you all so much for your suggestions with this. I'm going to play with them and see how they all work to get better acquainted of Aspire.

Brian, do you think in a future release fillets would be allowed on A project like working on here? My CAD program (TurboCAD) allows these fillets. Just wondering. :D

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Diamond Lake Custom Woodworks, LLC
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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 5:57 pm 
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VCarve Apprentice

Joined: Wed Jul 22, 2009 5:05 pm
Posts: 37
Location: Fox Island, WA
I guess I must get the cement out between my ears, but I can't see how Brian's method would create a filet just from offsetting the vector. Any help with breaking the cement?

Thanks Jerre

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 Post subject: Re: Can't get a fillet on this
PostPosted: Thu Aug 12, 2010 6:06 pm 
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VCarve Wizard

Joined: Thu May 18, 2006 3:24 pm
Posts: 1916
Location: Hendersonville, NC
Jerre,

Best way to prove it to yourself is download the orginal file and try it.

Before the Auto Inlay Tool this was how you could take a vector shape and prepare it so all radius' could be cut by the same diameter tool for both male and female parts. Just use an offset value that equaled the radius of the tool you wanted to use.

I can't give you a technical reason why this occurs, just that it does.

Tim


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