# Ability to pre-drill slot radius before milling process

**URL:** <https://forum.grid.space/t/ability-to-pre-drill-slot-radius-before-milling-process/2966>\
**Category:** CAM\
**Created:** [April 6, 2026, 4:39am UTC](https://forum.grid.space/t/ability-to-pre-drill-slot-radius-before-milling-process/2966 "2026-04-06T04:39:41Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![adamsouthside](https://forum.grid.space/letter_avatar_proxy/v4/letter/a/8edcca/32.png) [@adamsouthside](https://forum.grid.space/u/adamsouthside)\
**Post date:** [April 6, 2026, 4:39am UTC](https://forum.grid.space/t/ability-to-pre-drill-slot-radius-before-milling-process/2966/1 "2026-04-06T04:39:41Z")

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Still continuing to use Kiri:Moto. Is there the ability to pre-drill slot radius before milling process?

Currently it seems that the drill function only detect full circle. It would be great if the drill function could detect radius as as well in order to drill out material before milling to take out some of the stress of milling in some processes. This is what I normally do in traditional milling. Image below.

Thanks!

 ![2026-04-06_123010](https://forum.grid.space/uploads/default/original/2X/b/b3363e4b6674779b98af933827510439a99e20d5.jpeg)

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**Author:** ![stewart](https://forum.grid.space/user_avatar/forum.grid.space/stewart/32/21_2.png) [@stewart](https://forum.grid.space/u/stewart)\
**Post date:** [April 6, 2026, 9:31pm UTC](https://forum.grid.space/t/ability-to-pre-drill-slot-radius-before-milling-process/2966/2 "2026-04-06T21:31:04Z")

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this feature does not exist. but it’s a great suggestion. we would need to detect arcs as well as fully closed circled.

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**Author:** ![meddesign](https://forum.grid.space/letter_avatar_proxy/v4/letter/m/d6d6ee/32.png) [@meddesign](https://forum.grid.space/u/meddesign)\
**Post date:** [April 7, 2026, 11:43pm UTC](https://forum.grid.space/t/ability-to-pre-drill-slot-radius-before-milling-process/2966/3 "2026-04-07T23:43:50Z")

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just have two cad models….one with holes the other with slots and rest of milling …of course you would have to run two programs….change the tool, re-zero, and run the second program

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**Author:** ![adamsouthside](https://forum.grid.space/letter_avatar_proxy/v4/letter/a/8edcca/32.png) [@adamsouthside](https://forum.grid.space/u/adamsouthside)\
**Post date:** [April 8, 2026, 1:51am UTC](https://forum.grid.space/t/ability-to-pre-drill-slot-radius-before-milling-process/2966/4 "2026-04-08T01:51:43Z")

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Thanks .. I am aware of that .. this is exactly what I want to avoid!