4PCS 2-Flute Tapered Ball Nose End Mills

Delivered next day. Excellent little ball nose end mills, perfect for carving detail.

Did the job well, nice clean cuts

I purchased the bit set for machining small text on hardwood (Mahogany and light Oak) and epoxy. I had tried using 20 degree V-bits but found that due to the small step over there was quite a lot of manual clean up to do and was limited in the depth of cut as cutting any deeper than a 1.5mm lead to the middle of the "e, 4 and o" breaking off. So decided to try tapered Ball Nose bits.I have a Foxalien WM3020 with a 720W spindle and fully expected to snap the two smallest bits, but was pleasantly surprised when the cuts came out perfect and captured the detail I was unable to get with the V-Bits and with virtually no clean up. I did a lot of research on the speeds, feeds and depth of cut for each bit for my spindle which will cut up to 30,000 rpm and set all my speeds, feed and depth of cut to the absolute minimum recommended for materials.Will definitely purchase again.If you cut and paste the following in to ChatGTP it will generate a table with all the speeds and feeds for a 300W spindle with max 10,000 RPM. I must stress that I have NOT done any machining with my 300W spindle.Provide speeds, feeds, and depth of cut table for Genmitsu TB04A tapered Ball Nose Endmill set for cutting Hardwood, softwood, MDF and Aluminium when using a 300W spindle that has a max speed of 10,000 RPMBit specifications are:Material: Tungsten Carbide Steel AlloySurface : Nano Blue CoatingRadius: R0.25, R0.5, R0.75, R1.0mmShank Diameter: 3.175mmCutting Length: 15mmOverall Length: 40mmGood luck

These bits are quality items. Cut through 7mm mdf with no issues leaving a excellent finish. Have already bought more.

Good bits ! Cut well

They cut through like butter, I have been using them for well over 20 hours machining time and are still performing like new. Bargain!

Used in my small CNC router and have given some very good results. Have now used several times with no issues, I will definitely buy again.

Despite the quality of the bits they are not designed to withstand operator errors. One of my bits broke and Sainsmart were simply amazing. I contacted them to purchase a replacement and they were kind enough to promptly offer me a complementary replacement. I’m sure that this was a one-of gesture and not necessarily a standard policy. But it definitely showed their commitment to customer service.Good buy and goodbye!