I received my endmills yesterday. 66 total pcs.
I checked the hardness of several of the endmills & found that the shanks on the 1/2" 4 flute cutters were approx. 25 Rockwell C The cutting edges vary from 52-55 Rockwell C
The 1/2" 4 flute end mills measure between .5035"-504" in diameter.
The 3/16" endmills do not have very deep flute relief. (will certainly load up in soft aluminum)
The 2 flute cutters are pretty much right on size, good flute relief.
The carbide endmills also do not have very deep flute relief.
I just did a few test cuts with the same 1/2" 4 flute end mill that I checked the hardness on, it worked good in aluminum. I tested the side of the cutter, 1" deep with very light cuts on a piece of mild steel it worked fine with a good finish. I took about a 1/16" deep cut on a 1/4" wide piece of mild steel worked good with a smooth finish. Than I tried 1/4" deep pass & the cutter broke off right at the point were the shank meets the flutes?? (did not really push it that hard??)
I like the length of cut on all of the end mills, longer than most American made end mills.
I know the prices are great, but these are typical quality of the Chinese cutters I have purchased in the past.
Over all satisfied, but probably won't go back for anymore!
Has anyone else actually tried the cutters?
Mike N.
I checked the hardness of several of the endmills & found that the shanks on the 1/2" 4 flute cutters were approx. 25 Rockwell C The cutting edges vary from 52-55 Rockwell C
The 1/2" 4 flute end mills measure between .5035"-504" in diameter.
The 3/16" endmills do not have very deep flute relief. (will certainly load up in soft aluminum)
The 2 flute cutters are pretty much right on size, good flute relief.
The carbide endmills also do not have very deep flute relief.
I just did a few test cuts with the same 1/2" 4 flute end mill that I checked the hardness on, it worked good in aluminum. I tested the side of the cutter, 1" deep with very light cuts on a piece of mild steel it worked fine with a good finish. I took about a 1/16" deep cut on a 1/4" wide piece of mild steel worked good with a smooth finish. Than I tried 1/4" deep pass & the cutter broke off right at the point were the shank meets the flutes?? (did not really push it that hard??)
I like the length of cut on all of the end mills, longer than most American made end mills.
I know the prices are great, but these are typical quality of the Chinese cutters I have purchased in the past.
Over all satisfied, but probably won't go back for anymore!
Has anyone else actually tried the cutters?
Mike N.