# Extend a sketch measure to both sides

**URL:** <https://discourse.shapr3d.com/t/extend-a-sketch-measure-to-both-sides/33208>\
**Category:** Modeling Questions\
**Created:** [August 9, 2024, 12:59am UTC](https://discourse.shapr3d.com/t/extend-a-sketch-measure-to-both-sides/33208 "2024-08-09T00:59:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![franpanxop](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/franpanxop/32/26612_2.png) [@franpanxop](https://discourse.shapr3d.com/u/franpanxop)\
**Post date:** [August 9, 2024, 12:59am UTC](https://discourse.shapr3d.com/t/extend-a-sketch-measure-to-both-sides/33208/1 "2024-08-09T00:59:26Z")

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Hi! I need to edit a sketch that’s already extruded and almost finished, with exact measures and different pieces. I know that when you edit a sketch, the geometries that depends on that sketch update automatically, which is what I need, but in this case I don’t know how to manage to extend the measures to both sides, not just one.

I need to change the 160mm size to 161mm, but when I do this, it automatically extends only to the right or to the top, I need it to extend 0,5mm to each side so it doesn’t lose the center point, how can I do this? Thanks!!

 ![Screenshot 2024-08-08 at 20.43.42](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/c/f/cf778a8f3fae609b2c959c582b89a347bb5cb226.jpeg)

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**Author:** ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)\
**Post date:** [August 9, 2024, 6:57am UTC](https://discourse.shapr3d.com/t/extend-a-sketch-measure-to-both-sides/33208/2 "2024-08-09T06:57:26Z")

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Try to lock one end of the straight line, then change its length by 0.5 mm. Then unlock the locked end and do the previous process on the other end. It works for simpler bodies.

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<div class="post-metadata">

**Author:** ![JST](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@JST](https://discourse.shapr3d.com/u/JST)\
**Post date:** [August 9, 2024, 7:16am UTC](https://discourse.shapr3d.com/t/extend-a-sketch-measure-to-both-sides/33208/3 "2024-08-09T07:16:05Z")

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Or you can do it, on the body.  
Selct the marked sides of the body, then extrude it 0,5 mm and make on the both sides.

 ![IMG_1660](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/7/d/7da5f3da66ea7baaac30c71d02da92f02820d99f.jpeg)

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<div class="post-metadata">

**Author:** ![franpanxop](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/franpanxop/32/26612_2.png) [@franpanxop](https://discourse.shapr3d.com/u/franpanxop)\
**Post date:** [August 9, 2024, 5:46pm UTC](https://discourse.shapr3d.com/t/extend-a-sketch-measure-to-both-sides/33208/4 "2024-08-09T17:46:37Z")

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Thanks! I tried both, but that doesn’t work, doing that breaks the adjacent geometries 🥲 I guess I’ll have to draw everything again 🥲

EDIT: Wait, I noticed it breaks because there are two lines of the sketch that are disconnected 👀 Now it worked like a charm 🙌🏻 Thank you so much!

 ![Screenshot 2024-08-09 at 13.49.03](https://us1.discourse-cdn.com/flex002/uploads/shapr3d/original/3X/1/a/1adaa869b3500e2d29e22b8820cc9f3b26f987c8.jpeg)