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Before I assemble my unimat as a mill, can I mill this shape qty 50 rectangles with a unimat? https://www.etsy.com/listing/641618499/extra-large-disc-cutter-with-two-punches 1-3/8" x 7/8" and 1-

If there is already a center hole, I just use an endmill. A drill bit will grab and go off course. An endmill in a drill press/mill wil give you a perfect hole exactly where you tell it to be.

Would be irresponsible to use anything that black. Could have a blotting effect on the sun.

Since my last message didn't? contain John Hutnick's suggestion to trade the 12mm chuck for a 14mm chuck, I'm going to chime in on that again. Make a trade! :) Bill in OKC? William R. Meyers, MSgt,

Best solution I've seen mentioned, and that includes my own suggestions. Bill in OKC

Hello: Let's see if I understand what you are asking and remember exactly what I did. 8^° Started with a piece steel recovered from some kitchen thing that went south, (manual juicer?) which at that

All of this drilling is unlikely to result in the accuracy expected from a collet chuck. The closest solution that I can figure is to have a lathe with a 4-jaw chuck.? Insert a short piece of 3/8"

Hello Julius: What are we looking at in the photos with the indicators? Is the shaft in the head stock ground with a consistent diameter? Or is it a shaft that has been turned as it is clamped? Makes

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