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Two years ago I got chinese ER40 chucks in a number of styles (R8, 40 taper, MT3, and one I'm forgetting at the moment), and the chucks are all within .0002-.0005 runout, but the collets I've tried

My father bought the boring bar portion of the system, and I still have it and about 3" worth of the consumable tool stock.? I haven't used it very much, but it's worked very well when I have.? I

i have these and use them in addition to straight up hss tools. these are not as rigid, i get more chatter and worse finish, at least on steel. Best Regards John

Interesting idea.? If the question is why didn't this idea take off, I don't know.? Perhaps because it adds more cost to buy the blank compared to plain blanks.? And perhaps not with much benefit.

There are some on ebay UNIMAT Edelstaal Insert Replacement Cutters, M2 & HSS Ref 2722, NOS, Vintage #80 ebay.com Best Regards John

One reason I couldn't find much information on these was that I misspelled Edelstaal. Here is a closeup look at the inserts, they are preformed and not square. Says that they come in M-2 HSS, T-15 HSS

My ISP marked your email as spam, and I had to restore it from the spam folder. On top of that, though possibly because of that, the photos you attached don't have high enough resolution for me to

I think it is definitely worthwhile learning to grind your own tool bits.? And learning why some metals and other materials work better with different angles here and there (positive rake - negative

Shortly after acquiring my lathe I ?was called away from home for an extended length of time, finally after getting caught up on my chores I’m able to spend some time with my new to me lathe. Being

Hi Gang: When I made my M12/ER-32 chuck I used a stone on the chuck to make it mount true: I really like the chuck, it is great holding wood dowels. Carl.

And of course the sort of runout you should expect is more like 0.0004" If you can do the M12 thread and recess, then the 8° taper shouldn't be too bad - might take a few goes to get it right. Then

John,I have a complete set of 25?ER32 collets and recently purchased an ER32 collet closer nut. I intend to use this mounted on my Unimat DB200. This plus my Unimat chucks should cover most of my

If you can figure out which side is high, try clamping it in a vise and applying a bit of pressure. It may improve. It may get worse. It may not change at all. In the second & third case, a bit of

A while back we were kicking around a thread on collet chucks. There was talk of making your own, and there was talk of one on ebay UK. One member here (sorry, I forget who) posted that he’d bought

Can you share some pics? Best Regards John

Pics? Kit Maira kit.maira@... Support the Cause of Peace Visit www.antiwar.com

I have mounted a new Digital Read Out for the Z axis of my Unimat DB200. It took me some time to get it mounted but it was worth it. Now I have the ability to zero out the Z axis at any point to

Hello George: The pattern and follower only relate to the pitch, so a 0.5mm pitch pattern should work. The diameter is what ever you make it: M3x0.5 or M30x0.5 ( like a camera filter, etc) Good luck,

The #50 should give you a .5 mm thread. Best Regards John

Hi everyone, I was looking at getting an M3 (0.5) pattern and follower, but all the ones for sale only reference a number (like #30). How do I know what number an M3 pattern and follower would be?