# DKRed minimum exterior slot width?

**URL:** <https://forum.digikey.com/t/dkred-minimum-exterior-slot-width/55219>\
**Category:** DKRed and PCB Builder\
**Created:** [May 9, 2025, 7:15am UTC](https://forum.digikey.com/t/dkred-minimum-exterior-slot-width/55219 "2025-05-09T07:15:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kevinjcell](https://avatars.discourse-cdn.com/v4/letter/k/a183cd/32.png) [@kevinjcell](https://forum.digikey.com/u/kevinjcell)\
**Post date:** [May 9, 2025, 7:15am UTC](https://forum.digikey.com/t/dkred-minimum-exterior-slot-width/55219/1 "2025-05-09T07:15:25Z")

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What is the minimum width of a concave feature that can be routed on the board outline? For example, see the notch on the edge of my PCB in the attached picture. How narrow can I make a notch before the diameter of the routing bit precludes it from being cut?

 ![dkredpcb](https://global.discourse-cdn.com/digikey/original/3X/0/1/01400692d6d5c973cea6a23e27f41f32d4e7b981.jpeg)

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**Author:** ![Kristof\_2649](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/kristof_2649/32/2325_2.png) [@Kristof\_2649](https://forum.digikey.com/u/Kristof_2649)\
**Post date:** [May 9, 2025, 1:14pm UTC](https://forum.digikey.com/t/dkred-minimum-exterior-slot-width/55219/2 "2025-05-09T13:14:27Z")

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Thank you for your inquiry.

I’ve fielded this question with the DKRed team, I’ll get back to you as soon as we have any information.

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<div class="post-metadata">

**Author:** ![Kristof\_2649](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/kristof_2649/32/2325_2.png) [@Kristof\_2649](https://forum.digikey.com/u/Kristof_2649)\
**Post date:** [May 9, 2025, 6:13pm UTC](https://forum.digikey.com/t/dkred-minimum-exterior-slot-width/55219/3 "2025-05-09T18:13:14Z")

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The minimum width exterior slot allowed is 70mil or approx. 1.78mm