# Two pass when wanting one pass

**URL:** <https://forum.grid.space/t/two-pass-when-wanting-one-pass/3033>\
**Category:** Uncategorized\
**Created:** [July 22, 2026, 4:44pm UTC](https://forum.grid.space/t/two-pass-when-wanting-one-pass/3033 "2026-07-22T16:44:46Z")\
**Posts on this page:** 3\
**Page:** 1

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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:** [July 22, 2026, 4:44pm UTC](https://forum.grid.space/t/two-pass-when-wanting-one-pass/3033/1 "2026-07-22T16:44:46Z")

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[workspace\_RH\_CR\_R\_8\_T (1).kmz](https://forum.grid.space/uploads/short-url/p8TReBLZWHcwzeIbt4kSQPQXNyH.kmz) (329.4 KB)

I set step down at .03 " and z bottom at -.02" …the part is .016 thick I should only have one pass .03 down from the top of the part…I am missing something or what?

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**Author:** ![DaBIGOne](https://forum.grid.space/user_avatar/forum.grid.space/dabigone/32/2670_2.png) [@DaBIGOne](https://forum.grid.space/u/DaBIGOne)\
**Post date:** [July 22, 2026, 6:17pm UTC](https://forum.grid.space/t/two-pass-when-wanting-one-pass/3033/2 "2026-07-22T18:17:12Z")

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I think that’s totally logical… you have 0.016 material + 0.02 z-bottom… that is 0.036 and your stepdown is 0.03… so you need 1 more pass of 0.006 to get to the full depth…

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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:** [July 22, 2026, 6:29pm UTC](https://forum.grid.space/t/two-pass-when-wanting-one-pass/3033/3 "2026-07-22T18:29:41Z")

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thanks…usually is something simple