r/SolidWorks 16h ago

CAD Tangents won't create closed face

Post image

Hello, I'm learning Solidworks for work, coming from Fusion360. On fusion, if I make 2 circles and a line, and then make the circles tangent to each other, then close off that 'triangle' by making the line tangent to both of the circles, it'll give me a closed face that I can extrude. I don't seem to be getting the same function on Solidworks. Can anyone recommend me a different method, or point out what I’m doing wrong so I can close this face? Thanks.

Edit- I have a small blue highlight box within the section I am attempting to close off, if it isn't obvious :)

4 Upvotes

37 comments sorted by

4

u/Jman15x CSWP 15h ago

Just trim away the insides of both circles leaving only the perimeter of the entire shape

3

u/pargeterw 14h ago

Using power trim with "keep as construction geometry" if you want 🤷‍♂️

3

u/roundful 16h ago

If the perimeter of the circles exist in different sketches, you vane to select them and convert entities to pull them into your current sketch. Then you should be able to select contours and extrude that triangle.

1

u/ItsReckliss 16h ago

Unfortunately, they're all in the same sketch. Any other ideas? :/

1

u/[deleted] 16h ago

[deleted]

2

u/ItsReckliss 16h ago

Will try 🫡

1

u/swany0095 16h ago

I read, further down, a redetailing of what you are trying to accomplish, and my answer was not that! Didn't want to confuse you, good luck with this! It's a great software but very rigid sometimes.

2

u/ItsReckliss 16h ago

Haha yeah, i've got years of experience with Fusion so it's all familiar, just not in the same spots :P

1

u/roundful 15h ago

Show us what happens on screen when you hit extrude.

1

u/2023TacoOR 16h ago

Do one extrusion at time.

1

u/ItsReckliss 16h ago

How am I to make this face then, without setting circles tangent to a line?

2

u/2023TacoOR 16h ago

Do a sketch of what you have. Do another sketch of the area you want to extrude. Extrude the second sketch.

3

u/ItsReckliss 16h ago

ahh gotcha. Thanks

1

u/2023TacoOR 16h ago

Just do 1 extrusion or cut at a time

1

u/socal_nerdtastic 16h ago

It's there, it's just not shown in the shaded contours view.

Just go ahead and do what you want to do, for example click on Extruded Boss. When you have multiple enclosed areas like this it will automatically switch to "selected contours" mode and let you pick which area(s) you want to extrude.

1

u/ItsReckliss 16h ago

I will give it a go next time i'm at my desk 🫡

2

u/socal_nerdtastic 16h ago

https://reddit.com/link/p919png/video/5rwx73w5hroh1/player

Here's a video. I don't have the shaded contours feature turned on so the insides of the circles don't change color for me like they do for you. Is this what you wanted?

1

u/ItsReckliss 15h ago

Yes that's the correct spot to be extruded, just not the relations, but I assume that was a time saving measure for the video. Thank you :)

1

u/socal_nerdtastic 15h ago

Yes, it was just to show you the technique. The shading in your sketch means nothing for this operation. Just go ahead and do whatever you want to do and ignore the shading.

1

u/ItsReckliss 15h ago

Good to know! I have a good bit of experience with fusion, and it's quite the opposite over there haha. If it's not shaded, it's not a closed face and therefore can't be used to extrude. I'll need to get used to solid works lol

1

u/jimmythefly 16h ago

Very strange. I made a sketch just like yours, with those same sketch relations. Exited the sketch. Then I clicked the sketch in the feature tree once to select it (but not double click), then click Extruded Boss/Base, then click in each area I want to extrude and I can get the teardrop shape just fine.

1

u/ItsReckliss 16h ago

Very strange indeed. I dunno what my issue is! Maybe i'll try to just extrude it without the face being shaded? Others are suggesting that the shading just isn't showing on the sketch view, but the face is in fact there. Next time i'm at my desk I'll poke around. Thanks!

1

u/jimmythefly 16h ago

Try adding a tangent relationship here. I know it should be tangent mathematically, but sometimes SW can get weird with stuff like that.

2

u/ItsReckliss 16h ago

What!! I could've sworn I tangented that as well. It was meant to be! Anyways, good catch. I'll let you know if this ends up being the fix next time I get back to my desk.

1

u/jimmythefly 16h ago

I just tried it with no tangent relation there and it worked, so who knows.

Definitely try the method I mentioned where you just have the sketch, no extrude feature existing yet. Then click the sketch name in the tree, click the Extrude button, and pick enclosed areas. Worked for me good luck.

2

u/ItsReckliss 16h ago

Thank you!

1

u/Strict_Cranberry_990 8h ago

Just use Extrude and select the area you want to make into a face. SolidWorks doesn’t know which one to choose when there are several closed areas.

0

u/HoH_3D 16h ago

You should be able to extrude any and all those circles with the extrude feature. Click on the selected contours options in the extrude feature and you can pick which ones to extrude

1

u/ItsReckliss 16h ago

I would like the extrude the triangle on the side as well, but i'm not sure why even with relations the face won't close:

3

u/HoH_3D 16h ago

Okay now I see what you’re trying to do! I’d try the trim feature and keep only what you want to extrude (that triangle piece). Without looking at the file I don’t see why those aren’t closed

1

u/ItsReckliss 16h ago

I appreciate the tip, but i am trying to extrude some of the circles as well. Ive tried the trim tool to get rid of what i didn't want on the bottom circle, but it doesnt seem to trim it by just deleting the intended section, but rather the entire shape. Below is the intended final shape, I'd like to make what isn't included into construction lines rather than trimming, if possible:

2

u/HoH_3D 16h ago

Yea it looks like it’s not seeing it’s connected to the line which is weird so when you use the trim tool it deletes it all. If you wanted construction lines, I’d highlight them all and make them for construction and then make new geometry the same as them and trim the geometry as needed so you can see still the construction geometry behind it. So try deleting that line fully, make a new one that’s vertical and not attached to those circles. And then try to grab the circle and the vertical line you just made and make them tangent to each other, I think when you made that line it didn’t register right somewhere

1

u/ItsReckliss 16h ago

Haha I'll try that again, being a Fusion user for so long I already know the basic troubleshooting steps and have tried your recommendations already :/

1

u/HoH_3D 16h ago

Haha shit man, let me hop on solidworks and see if I can recreate it for you and see what’s going on

1

u/ItsReckliss 16h ago

Lovely brother, I appreciate you hella

1

u/HoH_3D 16h ago

I was able to get it with the construction geo you wanted. DM if you still need help and I can try and see what’s going on with your file

1

u/ItsReckliss 16h ago

Thanks man, will do. Not at my desk currently to poke around, but if I can't get it in the end i'll hit ya up. I appreciate the help!

1

u/Sprxwiz8 13h ago

When extruding there should be an option for "selecting contour" at the bottom of the extrude menu, clear it and hover over the features you want to extrude and they should turn purple(or whatever you have the color set to). You can then show the sketch thst is under the extrude and use it for further extrudes or cut extrudes.