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Help needed for "Fillet" / "Setback"
Read 6094 times
* January 15, 2015, 07:39:10 AM
Hi there. Please could someone tell me how to create an offset fillet; I am trying to create a model of a mobile phone. The lower edge of the phone has a smooth fillet which is not symmetrical to the corner.

I've been trying to use "setback", but find that no matter what setback dimensions I put in, it makes absolutely no difference. The fillet is always centred on the corner.

I have attached a screen shot for illustration.

Thanks, Guy.

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* January 15, 2015, 07:54:13 AM
#1
Hi there. Please could someone tell me how to create an offset fillet; I am trying to create a model of a mobile phone. The lower edge of the phone has a smooth fillet which is not symmetrical to the corner.

I've been trying to use "setback", but find that no matter what setback dimensions I put in, it makes absolutely no difference. The fillet is always centred on the corner.

I have attached a screen shot for illustration.

Thanks, Guy.

Looks like you want an elliptical fillet. I can think of a couple of possible ways to do it, but whether they'll work for you depends upon the current state of your model. Can you post the .tcw file?

Henry H

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* January 15, 2015, 08:34:20 AM
#2
Hi there. Please could someone tell me how to create an offset fillet; I am trying to create a model of a mobile phone. The lower edge of the phone has a smooth fillet which is not symmetrical to the corner.

I've been trying to use "setback", but find that no matter what setback dimensions I put in, it makes absolutely no difference. The fillet is always centred on the corner.

I have attached a screen shot for illustration.

Thanks, Guy.

I see Henry has already posted, but here's my 2 cents. The ellipticall arc was the same idea I had. I started with a rectangle as a temporary guide then selected Elliptical Arc from the ARC toolbar. V SEKE from the lower left corner of the rectangle and v SEKE to the top right. See attached to trim arc.   

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DonCW

2017 Platinum
Light Works Plug in
Windows 10
There's so much to learn and not much time left to learn it.


* January 15, 2015, 10:47:33 AM
#3
How about the "Slice" tool, using the "Slice by Surface" option?
« Last Edit: January 15, 2015, 10:53:29 AM by John R »

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John R.

V17—V21, 2015—2018
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Windows 10 Pro, 64-bit


* January 15, 2015, 11:41:36 AM
#4
You can get some limited elliptical fillets in TC, which won't play with the part tree because you're breaking the parametricity, by applying a standard fillet, say around the edge of a cylinder, then scaling its Z size.  It's still a tangent blend, but elliptical.  Quick pull or facet editor can be used to restore the size.  In your example, filleting 10mm then z-scaling .3 will give the blend the parameter that you illustrate.
« Last Edit: January 15, 2015, 12:15:03 PM by murray dickinson »

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* January 15, 2015, 02:17:08 PM
#5
Thank you all for your replies.

I will give your suggestions a go tomorrow. In the meantime here is the TCW file, it is at a very early stage. Quite excited because I have got access to a 3d printer. First time; so I thought I'd have a go at trying to create a cover for my mobile phone.
« Last Edit: January 15, 2015, 02:56:47 PM by yawningdog »

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* January 15, 2015, 06:07:25 PM
#6
Thank you all for your replies.

I will give your suggestions a go tomorrow. In the meantime here is the TCW file, it is at a very early stage. Quite excited because I have got access to a 3d printer. First time; so I thought I'd have a go at trying to create a cover for my mobile phone.

I think that before you go any further, you should redraw the whole thing as a Solid. In the file you posted, it is a "TC Surface" which cannot be filleted or shelled -- and this one cannot even be converted to a Solid (I tried).

Henry H

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* January 16, 2015, 07:14:59 AM
#7
Sorry, I accidently posted the wrong file! :-[

That's the one I downloaded from a 3D printing site, and I had exactly the same problem. So I decided to create one from scratch.

Here is the one that I am trying to create.

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* January 16, 2015, 08:04:17 AM
#8
I am still having problems in creating this fillet.

I can't seem to work it out. I posted the correct file (previous post), please could someone have a try. I need the fillet to go around the corners, rather than create a mitre. I've tried the suggestions but I would be grateful for a little more advise. Thanks.

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* January 16, 2015, 09:56:57 AM
#9
Rounded corner at the bottom makes it a bit tricky. Here's one way...

Henry H

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* January 16, 2015, 04:23:38 PM
#10
[EDIT:  The screen-captures and attached TurboCAD file have an error.  The "center-point" of the lofting at the radius corners should be at the same X&Y location as the radius corners' center-points.  -Alvin]

The screen-captures below show something that might work. (? ???)

I can't try it out in my Deluxe.

-Alvin
« Last Edit: January 17, 2015, 11:48:48 AM by Alvin Gregorio »

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Alvin Gregorio
(mostly Residential Architectural 2D; no formal CAD Training; intermittent TurboCAD user since yr. 2000 [ver6.5])
---TurboCAD: V20.2PP(57.0)[as of 3/12/15]; V19DL(54.2); V11.2Pro; Windows-7-Pro/64-bit; Intel-Core-i3 CPU; 2.27ghz; 4GB RAM; Intel HD Graphics (CPU based)


* January 16, 2015, 05:20:06 PM
#11
[EDIT:  The screen-capture and attached TurboCAD file have an error.  The "center-point" of the lofting at the radius corners should be at the same X&Y location as the radius corners' center-points.  -Alvin]

Attached is a further development of what I just posted.

It was made in Deluxe, so there are some primitive features, such as the faceting segmenting at the corners; but it gives you an idea of what I was suggesting.  -Alvin
« Last Edit: January 17, 2015, 11:48:26 AM by Alvin Gregorio »

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Alvin Gregorio
(mostly Residential Architectural 2D; no formal CAD Training; intermittent TurboCAD user since yr. 2000 [ver6.5])
---TurboCAD: V20.2PP(57.0)[as of 3/12/15]; V19DL(54.2); V11.2Pro; Windows-7-Pro/64-bit; Intel-Core-i3 CPU; 2.27ghz; 4GB RAM; Intel HD Graphics (CPU based)


* January 16, 2015, 08:06:36 PM
#12
I am still having problems in creating this fillet.

I can't seem to work it out. I posted the correct file (previous post), please could someone have a try. I need the fillet to go around the corners, rather than create a mitre. I've tried the suggestions but I would be grateful for a little more advise. Thanks.

What's the possibility of reposting in v.20?

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DonCW

2017 Platinum
Light Works Plug in
Windows 10
There's so much to learn and not much time left to learn it.


* January 17, 2015, 02:40:03 AM
#13
Thanks for those great ideas. I'll give them a go, and get back. Here's a version of the file in TC v20.

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* January 17, 2015, 04:59:36 AM
#14
Thanks for those great ideas. I'll give them a go, and get back. Here's a version of the file in TC v20.
There's no attachment.!!!

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DonCW

2017 Platinum
Light Works Plug in
Windows 10
There's so much to learn and not much time left to learn it.


* January 17, 2015, 06:08:45 AM
#15
Sorry, I need my brain examined!

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* January 17, 2015, 09:06:04 AM
#16
Thanks for all your help. Managed to do it via Henry's method. Here's an image of the mobile phone case that I'm going to print out.

I hope it works. Probably not, but there's a first time for everything.

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February 27, 2015, 02:26:03 PM
#17
Significantly more advanced than the one I am designing to replace the eBay item that broke after too little service.  Attached is the in-process piece (I had a similar problem with the filleting setback for the phone model).

I still have to fix some errors that prevent proper filleting (a common problem with the way I create parts, I guess).

I suppose I should add that this cradle will fit on a vent mount (that part didn't break) in my car.


Jeff

« Last Edit: February 27, 2015, 02:27:47 PM by Jeffin90620 »

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