Search found 145 matches

by TRX
Tue Aug 01, 2017 10:51 am
Forum: General Discussion
Topic: anti-wander drill grind
Replies: 6
Views: 1154

Re: anti-wander drill grind

It definitely wasn't a D-bit or gun drill. It looked like an ordinary twist drill in the blurry picture.
by TRX
Tue Aug 01, 2017 8:27 am
Forum: General Discussion
Topic: anti-wander drill grind
Replies: 6
Views: 1154

anti-wander drill grind

So, I'm looking at an old magazine with a too-blurry-to-be-useful picture of a long drill. The caption reads, "As an illustration of how special bits are available if required, here's a 1/4 in. diameter one over 12 inches long. Wandering off line is almost inevitable during the making of a long hole...
by TRX
Mon Jul 24, 2017 5:36 pm
Forum: Lathes
Topic: holding workpiece against spindle center
Replies: 9
Views: 2823

Harold_V wrote:I'm curious why you don't simply hold the material in a chuck, or even a collet.
I had a tapered or non-round part in mind.
earlgo wrote:Unscrew the faceplate a couple of turns.
That sounds like the trick!
by TRX
Mon Jul 24, 2017 12:08 pm
Forum: Lathes
Topic: holding workpiece against spindle center
Replies: 9
Views: 2823

Re: holding workpiece against spindle center

I thought of something like that using springs, but I was wondering if there was a better way.
by TRX
Mon Jul 24, 2017 9:01 am
Forum: Lathes
Topic: holding workpiece against spindle center
Replies: 9
Views: 2823

holding workpiece against spindle center

Let's say I have a long workpiece that has to be supported on a steady rest since I'll be working on the tailstock end. If I want to use a center and drive dog at the headstock end instead of a chuck... how do I keep the workpiece pulled up against the center? My old "How to Run a Lathe" book sugges...
by TRX
Fri Jun 09, 2017 10:56 am
Forum: General Discussion
Topic: Situating Fixed Tools in New Shop
Replies: 76
Views: 10173

Hunh. I just tried four different web browsers, and all I get is "plugin not available." Doesn't say *what* plugin it wants. Might be something Microsoft-specific.
by TRX
Fri Jun 09, 2017 10:43 am
Forum: General Discussion
Topic: Trend/Decline in hobby related Yahoo Groups Participation?
Replies: 9
Views: 1951

Yahoo's email system is/was seriously broken. Near the end, about 20% of the messages never made it to me. Their web interface was too slow, ugly, and annoying to be a useful alternative. I belonged to a number of mailing lists, some long before Yahoo absorbed them, but finally unsubbed from them al...
by TRX
Thu May 11, 2017 8:34 am
Forum: Milling Machines
Topic: measuring mill wear
Replies: 11
Views: 2466

Re: measuring mill wear

What I want to determine is *how* worn the ways are.

If it's .001" across 12", that's good enough for what I do. If it's .010" across 12", I have better things to do with my time.

For that matter, if I bought a brand new machine, how do I verify its accuracy? It's the same thing.
by TRX
Wed May 10, 2017 10:51 pm
Forum: Milling Machines
Topic: measuring mill wear
Replies: 11
Views: 2466

Re: measuring mill wear

So, what kind of setup would you use to measure that?
by TRX
Wed May 10, 2017 8:59 pm
Forum: Milling Machines
Topic: measuring mill wear
Replies: 11
Views: 2466

measuring mill wear

I have an elderly vertical mill that needs some work. Before I commit to that I need to measure the amount of table and knee wear. The spindle is the part that obviously needs work, so I'm mostly interested in the table bits. It *seems* simple. Put an indicator in the spindle, run the table across t...
by TRX
Mon Jan 09, 2017 9:07 pm
Forum: General Discussion
Topic: Today's Craigslist Oddity: the Cutawl
Replies: 35
Views: 4709

Re: Today's Craigslist Oddity: the Cutawl

Sears used to sell something like that, but they called it something like "swivel-head jig saw."

It's handy if you're trying to saw a round hole in a corner where there isn't room to swing the body of the saw without hitting a wall.
by TRX
Thu Aug 25, 2016 12:08 pm
Forum: The Junk Drawer
Topic: Are Engineers the Most Obnoxious People in the Universe?
Replies: 98
Views: 17525

Re: Are Engineers the Most Obnoxious People in the Universe?

They are tied for 'worst engineers' with the UK mechanical engineers, who believe that the more moving parts you can design in the better engineer you are. I owned a few British cars when I was younger. There are major differences between how a British automotive engineer and an American one would ...