The Home Machinist!

What does this mean? This is a spec listed on a fab. callout sheet for ductile iron piping. i do not know what this means. Can anyone explain it to me? How can one pick a fab shop that has this spec... if I do not know what the hell it is? Please help... Thanks doug.

We sharpened them by hand. I am not nere as good as some though. The sharpener I own will allow even the newbie to sharpen most of our drills with any point that we may need. prior to that only some of the more experieced guys could do it, and do it rught.

Tony, I have a a Darex M5d drill sharpener, and an E90 mill sharpener w/ raduis attachment. I think they are GREAT! The cost is a little high for a home user, (well, very high) but for a machine shop they are the [email]sh@#[/email] !! I originally purchased a Drill Doctor from Home Depot. Not very ...

Sandman...would the rifle in the bridgeport=rifle comparision be a handmade McMillan bmg50[img]/ubb/images/graemlins/cool.gif"%20alt="[/img], or a Barret bmg50[img]/ubb/images/graemlins/cool.gif"%20alt="[/img]?????? I kow I would love to own one but it is cost prohibitive for mos...

Hi Chris. I am glad to hear that you had no porblems reaming the bearing holes. When i ream Aluminum, I use a 90 sfm, and .006 feed per rev. example rpm=3.82x sfm(90) / dia. (.500), or 3.83x90/.500 = 687 rpm x .006 ipr(inches per rev.)=4.125 inches per minute. I drill 1/64 underneath the ream hole s...

Roy, nice work. I spent the better part of an hr. looking at all the great projects you have built. Were you/ are you, by chance an engineer, as well as a machinist??? I can tell you put in MANY meticulus hours disigning and building the shaper and other projects!! Great web site. Best Regards, Doug...

You can use any type of tap, as long as it is SHARP. Be careful not to workhaden the matl. when you drill it. Look up your speeds for whatever type of stainless you are working on. (if you know it) As a general rule, I use between 35 - 55 sfm for drilling 300 series stainless. I prefer OSG, and YMW ...

I acquired a Jacobs model 50 collet chuck and we know some of you have encountered the same problem... How do I pick up true center of the chuck with the backing plate? Do I simply use the 5/16 fasteners? This seems a little hokey, but maybe that's what was done when these were made. Any help, or dr...