uxcell 10Pcs 0.5mm Carbide End Mill Engraving Milling Cutter CNC Router Bits for PCB Machine, 1/8" Shank

These have performed great so far. I did break the first 3 before getting any machining completed. Actually ran in aluminum with good success. Need to keep in mind they are only .6mm (.023”) in diameter so high RPM.

These are great little end mills. I had no idea what kind of feeds and speeds they were able to use for different materials, so I went with feeds and speeds of a two flute 1/16” end mill and reduced by 50%. They are sharp and cut really well. I purchased them to design and mill circuit boards. I would recommend these end mills, just a word of caution… don’t drop them. It’s almost guaranteed they’ll break. First hand experience.

These bits are best bang for your buck. Affordable enough so you don't worry if one breaks. I use these for intricate inlay work as well as fret slots for guitar fretboard. The best way to use them is to cut a little bit off of the bit so it's stronger. I use just regular pliers and then grind/file down the end. This way your bit lasts longer.

I used these on dual layer abs for sign making. Work great and you don’t have to be careful with them because they are super cheap. Haven’t broken one yet

I use them all the time for projects in 6061 aluminum with no issues. If you read the other reviews i can tell you they have no clue on what they are doing. If you know feeds & speeds for your material these will last a good amount of time. If you plan on using these small end mills use flood coolant of mist with allot of chip clearing.

Engraving for 1/8" chuck. Wish I could find a face mill with that shank size

I tried using some these in a benchtop mill to engrave numbers in soft aluminum. 3 of them broke in 5 digits only removing about .003" of material and as slow as I could turn the handle on the table. If they don't work for this I'm not sure what else they would be useful for. Don't waste your money.

I like these end mill bits however I do not use them in a CNC machine. I use them for drilling very tiny holes in shells for crafting and jewelry making. They drill and cut very well and it does not crack the shells like a regular twist drill bit. It, also, cuts sideways which is very helpful with the small detail carvings. After the first order I ordered 3 more packs. The bits do not last long and will dull quickly which is the only downside with them. I'm very pleased and will order more in the future.

I bought these for cutting fret slots with a shopbot cnc router worked great . Used one bit and didn't break it

Works great

Good endmills but keep showing up with 1 broken in package