🔧 Steelex M1089 Mill Holder Set - 5 Piece Review

holder marked "3/8" VALID 1/2". So, I have TWO 1/2 inch holders. I NEED a 3/8" holder but don't have one. If you buy them be sure to measure them all to make sure they match the size they are listed on.

I'm not a professional machinist and have not used all sizes but the 1/2 I got has 0.8 thousandths mileage that's in the hole is listed . My spindle has less than 0.1 thousandths. The set screw on the 1/2 holder must not be tightened with a standard Allen key. It's located between hexes #5 and #6. The head of the setscrew has a terrible finish. You will need to sharpen a #6 allen wrench to tighten the set screw. It works for my homeshop.

Used them on my new 30 year old 8x30 imported Knee Mill for 4 months. Have done this in 25 years as a professional tool and die maker. They're no worse than any used American made holders you'll find at any tool and die shop. When I received them they didn't fit in the hole in my car. I searched the internet for R-8 dimensions and tolerances and my car was 0.001-0.0015 smaller. I took a wooden dowel, cut a slit in one end and wrapped sandpaper around it. the other end was inserted into an…