I’m trying to track these bits down after reading recommendations.
I regularly order these, and they work great:
https://www.amazon.com/gp/product/B0020B0FOI/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
This is what I’ve been using.
Thanks!
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How do you determine end of life for a bit
I havent gotten that far yet! Lol there are posts on her about that. If I remember correct the bit will leave burn marks when its getting dull but there may be other indicators, not sure.
I can tell when a bit is getting dull from the quality of the cut. You’ll get a little bit of hairiness from a sharp tool, but a dull one will give you a really ugly cut that you’ll spend forever cleaning up. I typically change out bits anywhere between 20-40 hrs of cutting depending on how hard I’ve been on the tool.
Examples! 
'Cause if you’re like me, you need visuals.
This is what I get from a fresh tool:
These parts were cut with a tool at the end of it’s life:
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I wish there was a button to click to make this Maslow-Wiki.
Short, clear and with pics. Thanks!
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No problem, I enjoy sharing as much as I can. I remember when I first started CNC machinist, I wish I had someone to help me figure it out.
I feel like that’s a first. I’ve told my wife before “I just need to make a quick post”, to which she responds:
But maybe that’s just me.
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Don’t worry about the wiki. ‘Hardware - End of life/repair’ addition soon.
Will just steal your post as first entry and reduce the picture size 
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