# Bit recommendation for going deep?

**URL:** <https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936>\
**Category:** Uncategorized\
**Created:** [October 17, 2022, 12:25am UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936 "2022-10-17T00:25:10Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Yucon](https://avatars.discourse-cdn.com/v4/letter/y/a698b9/32.png) [@Yucon](https://forum.onefinitycnc.com/u/Yucon)\
**Post date:** [October 17, 2022, 12:25am UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936/1 "2022-10-17T00:25:11Z")

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So looking for a 1/4 endmill bit that will reach at least 1.5 inches, i started making round boxes and the inside needs to be hollowed out to 1.5 so i picked up my cheap harbor freight bit and began the process, the good bits i have only have flutes to 1", well started cutting fine and then on 3rd pass started chattering, I believe the tool just doesnt hold it sharpness long enough and started getting hot, and then it snapped, ugh.  
So now i found out that getting 1/4 shaft endmill bits that have flutes of 1.5 cutting depth are kinda rare, so now what?

Not really ready to upgrade to a 1/2 collet.

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**Author:** ![helibuff](https://avatars.discourse-cdn.com/v4/letter/h/f05b48/32.png) [@helibuff](https://forum.onefinitycnc.com/u/helibuff)\
**Post date:** [October 17, 2022, 12:38am UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936/2 "2022-10-17T00:38:05Z")

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Try this bit from CNCbits [https://www.cncbits.ca/product/1-4-2-flute-downcut-long/](https://www.cncbits.ca/product/1-4-2-flute-downcut-long/)

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**Author:** ![Yucon](https://avatars.discourse-cdn.com/v4/letter/y/a698b9/32.png) [@Yucon](https://forum.onefinitycnc.com/u/Yucon)\
**Post date:** [October 17, 2022, 1:05am UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936/3 "2022-10-17T01:05:27Z")

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Thanks for your response, so i checked them out but couldn’t find any information on what their bits are made from, so i text them and i guess I’ll hear from them soon. Ty

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**Author:** ![Yucon](https://avatars.discourse-cdn.com/v4/letter/y/a698b9/32.png) [@Yucon](https://forum.onefinitycnc.com/u/Yucon)\
**Post date:** [October 17, 2022, 10:02am UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936/4 "2022-10-17T10:02:42Z")

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So they responded and said all their bits are solid carbide, so i will be ordering one of these. I’ll let you know how it goes, ty.

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**Author:** ![sghawley](https://avatars.discourse-cdn.com/v4/letter/s/cab0a1/32.png) [@sghawley](https://forum.onefinitycnc.com/u/sghawley)\
**Post date:** [October 17, 2022, 9:47pm UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936/5 "2022-10-17T21:47:31Z")

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Haven’t tried them, but this company has 1/4" carbide 2-flute endmills with 3"LOC. Might be good for light cuts when extra length is needed. [Extra-Extra Long End Mills | Solid Micrograin Carbide End Mills (kodiakcuttingtools.com)](https://www.kodiakcuttingtools.com/viewseries/carbide-end-mills/extra-extra-long-carbide-end-mills/)

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**Author:** ![mtannerdesigns](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/mtannerdesigns/32/9309_2.png) [@mtannerdesigns](https://forum.onefinitycnc.com/u/mtannerdesigns)\
**Post date:** [October 18, 2022, 3:42pm UTC](https://forum.onefinitycnc.com/t/bit-recommendation-for-going-deep/15936/6 "2022-10-18T15:42:25Z")

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1/4" bit, 6" overall length, with any stress that’s gotta wander a little…ahah