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OK. That would be using a standard edgefinder at the 3 o clock position on the cylinder I assume. Should work well for smaller cylinders where you can get an edgefinder into the 3 oclock position.

This is assuming DRO, correct? I assume that a humble manual user such as myself must factor in backlash...?

Just tried the "Marv Maneuver" and it works like a charm. As the finder sticks, just put a medium-large screwdriver blade in one of the visible slots of the collet, give a fraction of an ounce of twist (takes almost no pressure), and the finder falls into your hand. Sliiiiick. Where's that...

AHA! That makes sense! I should have thought of that myself...

The 1/2 and 3/8 finders fit like any bit would fit, a very gentle, slightly snug fit, but given that the "hind end" is held on with a spring, removing my two-ended finders turns them into "slinkys." The rear end doesn't want to come out; easier for the spring to expand than for the finder to...

R-8 collet, with 1/2 (same problem with 3/8) finders. So the finder should just be slipping out? "Not Happening." And spring stretch is the inevitable result. Re putting it in not as far: You still have to put the finder in past the "other" end, so even if you're just barely getting the...

I have a couple double-ended edge finders. I must be doing something wrong, they're difficult to extract from the collet after use. So take my 1/2 edgefinder (a Starrett). I put it in the 1/2 collet with the .200 end of the edge finder down, use it, then upon removal, the .500 end hangs in the...

Hey anything that will allow me to make a mistake slowly, I'm all for it! :big: Appears to be 20 TPI and 50 divisions, so I guess that's reading me radius. OK, I'm off to give this a try. Thanks guys.

Thanks guys! Confidence restored. ;D Still confused re: relation of boring head dial to hole size...at school I've used lathes that were both types...some dials gave you measurements in terms of radius (the actual amount the bit was moving into the work), others gave measures in terms of...

Hm, OK, I see. Thanks. So the boring head/bar is more of a finishing tool. How does one bore to a specific diameter...do you bore an undersize hole, measure it, then adjust to final size using the dial of the boring head? If so, sounds like I should have bought a set of hole gauges with my...

Just received my first boring head, 2" capacity on an R-8 collet for use in my small mill. Also a set of Cobalt boring bars. Will be boring aluminum that's 1/2" - 1" thick. I could use a little help. As I was assembling the boring head, I realized (for the first time) the boring bar itself...

I know this is a "vintage" thread, but I got to examine this jig in person today...as you examine it, it starts to dawn on you how useful it is. Think of the difference between a hand-held circular saw, and a table saw...being able to get precision cuts and grinds with a Dremel would be...

It's a pleasure to look at, I'm sure it's a joy to use! Congrats :bow:

I just noticed you could buy a Rong Fu 45, which has +200 lbs on the X4 and made in Taiwan not China, for LESS than you can buy the comparatively smaller X4 from Griz. ??? How does that compute? If I were to get a larger mill than my X3, between these two offerings, I'd take the RF45 in a...

Dave thanks for the encouragement...I would like to learn how to scrape and you've given us a great head start here.

In the Machine Data Sheet it says "Spindle Taper....R8" 600 lbs? That's RF-45 territory isn't it? Just under $3K....hm, that's 3x the price of an X3, which is just under a 400 lb machine. Motorized Z axis nice, probably too heavy to crank by hand. I'd kill for that additional Y travel, but it...

I like it! Putting on my want list.

The other day I turned a stub arbor in one of my mill's collets, it was about 2" long, and I got a bit of a taper on it, a couple thousandths. I was machining it from a steel bolt. Just for the sake of my curiosity, would you measure your rollers and tell me if there's any taper on them?

Yes! Very helpful! I see I have more leeway to get closer to the edge than I thought. Applause for the answer. And regards wife beating, I have been using a rod about the diameter of my little finger, so I'm sure we'll all be thrilled that I can move up in diameter to my thumb, thanks for the...

Regardless the shape of the metal around the hole, how close to the edge of a piece of metal (steel) can the hole be, before thread integrity is compromised? What I am looking for is a rule of thumb, such as "the metal surrounding a hole should be ___ percent larger than the major diameter of...