开云体育

Hello All: After you mount the chuck to the spindle the collet taper should be ground true. Carl.

Stemple's Black 3.0!

Ditto, back when Penn & Teller's (sp?) book came out; never tried 220, though. -Dave

That sounds so San Francisco. donmckee@...> wrote:

I use carbide tipped saw blades (7-1/4 and 10") to cut aluminum all the time - especially things like 80-20 extrusions and 6061 plate

Hello: After a long hiatus while waiting for some tools from Asia, I started working on a part to fix my U3's feed screw problem. This is the piece: It is quite small, total length is 35mm. Large part

No guarantees possible, especially with a hand drill. If you have a Unimat-style milling vise with the v-block cutout and a drill-press, it may help. Use your 12mm bit to center the piece and lock it

It’s taken me a long while to learn this, but there are times when it is best to buy rather than make (and this is one of those times). You want the run-out on your collet chuck to be as small as

Hi,I would second the boring option, if you want any hope of achieving any sort of concentricity.? If I understand you, you want to take a 12mm mount ER16 collet chuck, and convert it to a 14mm

"I' ve plugged pickles in to 120v and 220v. Try it!" Carl, don't be ridiculous...? A pickle wouldn't fit in the socket.

Grip the center with vise grip pliers. Tap the pliers with small hammer. Center should pop right out. ?You can also use small flairing tool to grip center for same process. Good luck. -- Steve Jaynes

If so, you might be able to fit a metric grease zerk to it, and pump the tailstock ram full of grease, which would push the center out... Maybe. ;) It could get messy, and possibly shoot it and grease

Steve pointed out to me that not all of my messages are going to the group, and he thought at least this one should, so here it is! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) Aphorisms to live

Black as night, or black as coal?

Hi Gang: The best option would be to find a lathe that you can use. A hand drill option would be to make a step reamer. It would have a guide bushing the diameter of the existing hole followed by the

Good point Bill. Still, providing the M12 hole had never been tapped, use the original bit for centering and bore with the new tap drill size.

Are you sure about that? The tap drill for an M12x1 tap is 11mm. That is what I used making the collet chuck and faceplate that I worked on. Both fit the Unimat SL spindle. See the Metric fine thread

Without a milling machine or a lathe, achieving perfect axial alignment will be difficult if not impossible. You can get close, or even perfect if you're lucky, with a drill press. Drilling by hand

I've plugged pickles in to 120v and 220v. Try it!

I enjoyed one experienced machinist's explanation: It's all about the hardness, get them in the right order and anything cuts anything: Diamond cuts carbide Carbide cuts tool steel Tool steel cuts