Uncut or downcut bits

hello- I purchased a starter end mill pack and am having difficulty finding out which are upcut and which are downcut. They all look similar. I have:

202 ballnose
102 square
201 square
101 ballnose

Those are all upcut bits, The 251 that comes in the starter pack is the downcut.

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Most likely all upcut bits in the starter package. Is that Carbide’s kit or another? the part #'s look like Carbide’s.

  • 2 ea - 201 .25" Flat Endmill
  • 1 ea - 202 .25" Ball Endmill
  • 1 ea - 301 .50" 90 Degree V-Bit Endmill
  • 1 ea - 302 .50" 60 Degree V-Bit Endmill
  • 1 ea - 101 .125" Ball Endmill
  • 1 ea - 102 .125" Flat Endmill
  • 1 ea - 251 .25" Downcut Flat Endmill

Thank you very much. They all look like upcup, but I wasn’t sure. Do you recommend using the down cut bit for an outside border on a sign?

Yes, using the downcut for areas where surface finish matters is perfect — just make sure you have adequate chip clearing and don’t go too deep in a slot.

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This may help on determining Up cut vs Down cut

Here’s the link to another thread on the community that goes into more detail.
Read everything for a detailed explanation

2024-02-07_14-49-03

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Will do. Thank you very much.