# Sketch fillet tool/Arc tangent auto-constraint

**URL:** <https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490>\
**Category:** Feature requests\
**Created:** [March 2, 2023, 6:38am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490 "2023-03-02T06:38:27Z")\
**Posts on this page:** 20\
**Page:** 1

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**Author:** ![NathanD](https://avatars.discourse-cdn.com/v4/letter/n/dec6dc/32.png) [@NathanD](https://discourse.shapr3d.com/u/NathanD)\
**Post date:** [March 2, 2023, 6:38am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/1 "2023-03-02T06:38:27Z")

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**The problem that this feature will solve:**

Adding fillets to a sketch is a tedious multi-step process. There is no tool to select two lines and connect them with a _tangent_ fillet radius.

Alternatively, using the arc tool it’s possible to connect two lines with a radius. With auto constraints turned on, Shapr will make the two ends of the arc coincident to the lines you are connecting, but will not make it tangent. Furthermore, while setting the arc radius, if either connecting line isn’t locked, it will move one of the connecting sketch lines. I have to lock parts of the sketch that don’t necessarily need to be, set the radius, then apply the tangent constraint one at a time.

Using the circle method, I have to draw a circle to represent the radius, make it tangent twice to the two lines, then trim the excess.

I understand that I can extrude the non-filleted sketch, add the fillet, then project the face back onto the sketch, but that’s too many steps, in addition to having to go back into the projected sketch and add tangent constraints to the projected fillet.  
This method is also not always practical.

**Brief description of the outcomes that you expect from this feature:**

Ideally, a fillet tool that allows me to select two (or more) lines and add a fillet, set the radius and done.

Alternatively, modify the arc tool auto-constraints to behave as a fillet tool. You would still have to sketch the arc, but it would constrain as a fillet and modify the radius without moving other sketch elements.

**What can’t you achieve without this feature?**

_ **Quickly** _ add fillets to a sketch without multi-step workarounds.

_Is this a workflow blocker for you? Is this why you can’t use Shapr3D for work? Is this slowing you down?_

It is slowing me down. I have the need for speed. 🏎

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**Author:** ![Grandpa17](https://avatars.discourse-cdn.com/v4/letter/g/b5a626/32.png) [@Grandpa17](https://discourse.shapr3d.com/u/Grandpa17)\
**Post date:** [August 3, 2023, 8:41pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/3 "2023-08-03T20:41:59Z")

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I love Shapr3d and have used it for over 3 years. I can’t believe we still don’t have fillet and chamfer options in sketch mode. I’ve used CAD systems for 30 years now and have used fillets extensively in the sketching phase of creating models. There are many reasons to use fillets/chamfers in sketches rather than adding them later in extrusions.

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [August 3, 2023, 8:42pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/4 "2023-08-03T20:42:40Z")

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Sketch fillets are coming with the release of the release of parametric modeling

> **[2023 Summer Product Tour](https://www.shapr3d.com/2023-summer-product-tour)**

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**Author:** ![Pggirvin](https://avatars.discourse-cdn.com/v4/letter/p/a88e57/32.png) [@Pggirvin](https://discourse.shapr3d.com/u/Pggirvin)\
**Post date:** [February 5, 2024, 5:01pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/5 "2024-02-05T17:01:06Z")

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Don’t see it in there yet; is it still coming?

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**Author:** ![Istvan](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/istvan/32/23668_2.png) [@Istvan](https://discourse.shapr3d.com/u/Istvan)\
**Post date:** [February 5, 2024, 5:01pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/6 "2024-02-05T17:01:37Z")

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Yes, it’s in the scope of parametric modeling. I can’t give you an exact delivery date yet.

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**Author:** ![mwrich](https://avatars.discourse-cdn.com/v4/letter/m/838e76/32.png) [@mwrich](https://discourse.shapr3d.com/u/mwrich)\
**Post date:** [June 16, 2024, 10:15am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/7 "2024-06-16T10:15:54Z")

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Pushing for this feature too. Im coming from space claim where this is stupid easy. Click fillet tool the two lines and call out the radius you want. It even auto trims for you. Please add asap

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**Author:** ![jmedlin](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/jmedlin/32/27405_2.png) [@jmedlin](https://discourse.shapr3d.com/u/jmedlin)\
**Post date:** [October 18, 2024, 2:31pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/8 "2024-10-18T14:31:09Z")

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This is a feature I’d love to have as well. Any news on this feature?

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**Author:** ![Steamflyer](https://avatars.discourse-cdn.com/v4/letter/s/96bed5/32.png) [@Steamflyer](https://discourse.shapr3d.com/u/Steamflyer)\
**Post date:** [November 27, 2024, 2:21pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/9 "2024-11-27T14:21:10Z")

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This is desperately needed. Inability to easily add fillets/chamfers to a sketch limits the power of the parametric modeling. Dragging a model around and trying to find multiple edges that need a radius is tedious. It’s sort of the last vestige of “well you can do it on the body” philosophy where the app started.

Doing a part in SW right now because it has lots of fillets and a few chamfers. On the sketch they go, into the model they appear.

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**Author:** ![Itsnotlevel](https://avatars.discourse-cdn.com/v4/letter/i/c67d28/32.png) [@Itsnotlevel](https://discourse.shapr3d.com/u/Itsnotlevel)\
**Post date:** [December 12, 2024, 2:29am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/10 "2024-12-12T02:29:30Z")

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It might sound extreme, but no fillets for this long and promising them makes me Want to cancel my subscription for shaper.  
I Shaper 3-D and I also use fusion 360. I find myself opening fusion 360 because even though I love Shaper 3-D, Fusion 360 is slowly becoming my go to because of little things like this.  
As a company, I’m sure you don’t care about one person’s opinion on something this small but promising something for this long and not delivering on something so simple as a fillet or a chamfer in a 2-D sketch is just ridiculous.  
If it’s not something you can implement then explain why and tell us why you haven’t done it so far don’t just leave us in the dark. I’m sure I’m not the only one who felt this way but I’m probably the only one to say anything.

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**Author:** ![arroniow](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/arroniow/32/30268_2.png) [@arroniow](https://discourse.shapr3d.com/u/arroniow)\
**Post date:** [December 16, 2024, 9:36pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/11 "2024-12-16T21:36:47Z")

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I have to say that no ‘sketch radius’ tool is one of the most annoying short comings that this modelling software has.  
You can fillet the object later, but sometimes you just want put it in the sketch for simplicity and time saving. Also when you are exporting to other software like CAM for material cutting (Laser, Router, etc).  
Joining two intersecting lines with a radius is a real headache currently, and sometimes leads to amusing outcomes if you edit dimensions on the sketch.  
I have been subscribing monthly until I decide to use this software long term, this is currently costing me around £475 per annum.  
At this price CAD software without the ability to Radius join two lines, looks very unappealing.

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**Author:** ![SCALEMODEL](https://avatars.discourse-cdn.com/v4/letter/s/77aa72/32.png) [@SCALEMODEL](https://discourse.shapr3d.com/u/SCALEMODEL)\
**Post date:** [December 16, 2024, 9:44pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/12 "2024-12-16T21:44:08Z")

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Agree with you, their statement " The Precision of CAD.  
The Freedom of Design."

But they are missing very fundamental CAD features.

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**Author:** ![Choc](https://avatars.discourse-cdn.com/v4/letter/c/f04885/32.png) [@Choc](https://discourse.shapr3d.com/u/Choc)\
**Post date:** [December 20, 2024, 3:41am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/13 "2024-12-20T03:41:49Z")

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@Istvan do you have a delivery date yet? I just purchased a subscription today and I’m surprised to find out that I cannot do a corner radius/fillet on a sketch. Seems like this has been promised for a while but continuously pushed. This is a deal breaking feature for me.

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**Author:** ![Joe\_Mrchanic](https://avatars.discourse-cdn.com/v4/letter/j/48db29/32.png) [@Joe\_Mrchanic](https://discourse.shapr3d.com/u/Joe_Mrchanic)\
**Post date:** [December 21, 2024, 9:50pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/14 "2024-12-21T21:50:16Z")

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100% agree. I’ve been using AutoCad since 1986 for mechanical design. I’m pretty new to Sahpr and immediately was missing sketch tools like fillet, extend and mirror. IMO, these are huge misses that the competition has in their sketch arsenal.

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**Author:** ![myasinsuw](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/myasinsuw/32/9383_2.png) [@myasinsuw](https://discourse.shapr3d.com/u/myasinsuw)\
**Post date:** [February 22, 2025, 12:54am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/15 "2025-02-22T00:54:57Z")

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@istvan Looking forward to the “Fillet Chamfer” feature for sketches! It’s a valuable addition, and I appreciate the team’s hard work. Hoping to see it available soon!

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**Author:** ![ggltoddmiller](https://avatars.discourse-cdn.com/v4/letter/g/e9c0ed/32.png) [@ggltoddmiller](https://discourse.shapr3d.com/u/ggltoddmiller)\
**Post date:** [May 16, 2025, 7:31pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/16 "2025-05-16T19:31:45Z")

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Excellent! I could really use this too.

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<div class="post-metadata">

**Author:** ![Choc](https://avatars.discourse-cdn.com/v4/letter/c/f04885/32.png) [@Choc](https://discourse.shapr3d.com/u/Choc)\
**Post date:** [June 2, 2025, 8:23pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/17 "2025-06-02T20:23:33Z")

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I’ve moved back to fusion 360 because things like this and inability to convert STL/mesh to solid body are big missing features.

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**Author:** ![bgray43050](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/bgray43050/32/27251_2.png) [@bgray43050](https://discourse.shapr3d.com/u/bgray43050)\
**Post date:** [October 30, 2025, 10:51pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/18 "2025-10-30T22:51:30Z")

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Any news on this? Not being able to quickly create a fillet within a sketch is kind of a big deal, for sure.

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**Author:** ![rob2](https://avatars.discourse-cdn.com/v4/letter/r/f9ae1b/32.png) [@rob2](https://discourse.shapr3d.com/u/rob2)\
**Post date:** [January 18, 2026, 11:17am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/19 "2026-01-18T11:17:12Z")

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Hi, is there any news on this yet? I’ve seen there are now AI rendering options and so on, but there’s still no way to properly round off sketches. This is unfortunately very annoying and I believe that for many customers here, using this tool frequently would be a necessary action. I have no idea how complicated it is to fly something like that in, but it would be great.

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**Author:** ![ben3](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/ben3/32/36195_2.png) [@ben3](https://discourse.shapr3d.com/u/ben3)\
**Post date:** [July 11, 2026, 5:08am UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/20 "2026-07-11T05:08:26Z")

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Please add this feature immediately. F me. I’ve just bought the subscription after playing in the free version for a while. Assumed a fillet tool in sketches was just something even basic 3d software has, but no! C’mon team, surely it’s not a hard thing to add.

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**Author:** ![daniel.crk](https://avatars.discourse-cdn.com/v4/letter/d/e19adc/32.png) [@daniel.crk](https://discourse.shapr3d.com/u/daniel.crk)\
**Post date:** [September 17, 2026, 10:25pm UTC](https://discourse.shapr3d.com/t/sketch-fillet-tool-arc-tangent-auto-constraint/24490/21 "2026-09-17T22:25:04Z")

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It’s so odd to me for the staff to just stop responding. Why not give an update? Why even keep this forum section around?

Most posts in this section follow the exact same pattern. Someone asks for a feature, people agree. Usually it’s a post from like 2022. There’s a reply from staff from usually 2023, saying it’s coming soon. 2024, people bump the thread asking about it. No replies from the staff. 2025 comes, still no answers or updates. 2026 comes and soon goes, and nothing.

Why not safe your self some embarrassment and simply quietly remove this forum section? Seeing these requests for no-brainer-festures go ignored (often after first having promised it’s coming) is just making it worse.

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