Review on Lyndex 800 064 Collet Opening Diameter by Jerry Mangum

I agree with the previous two reviewers who warn that the 1" R8 collet is only for light cuts. I would add that the Lyndex brand collet is far superior to other unnamed 1 inch collets that are cheaper. An inherent problem is that large diameter R8 collets do not have enough clearance. Once the ID is greater than about 7/8 inch, the end mill will no longer fit within the ID of the collet body and some sort of three finger extension must be made that allows the fingers to hold a length of about an inch. end cutter. For heavier cuts, most people just use the R8 "End Mill Holder", which has a large solid tubular shoulder and a pair of set screws to hold the end mill. I had to use a 1" collet due to a gap issue where the large end mill holder would not fit. The Lyndex brand collet worked well for this purpose.