What metal drill bit for putting a Piranha on?

[Coyote machine]

+1 on the machine shop!

You may be surprised at the price they charge you!

May save a whole bunch of time and possible physical injury.

The right tool for the job...

I recently made a 1-3/8 hole in 1/2 plate and wore out one hole saw, had to buy another, had drill press issues. $$ and time ++... Machine shop $20 and time to drop off and pick up

EXACTLY right. Forget all the caliper drivel, just get the hole drilled by someone with the right tools and safely. All the rest is a waste of time arguing about nothing of any significance whatsoever.

 

[tomfifield]

Shield Arch, what bridge is that? Is it the new Bay Bridge section?

I have a set of those calipers at home, we would never use such low end tools at Boeing although. I do think I am a bit of an expert on this, and a few people here got the readings right. All I can say is those calipers are very sloppy even when set right; yes it is just over .8, give or take some slop.

As this topic has taken a few side roads this may be of interest to some of you.
I work in the most advanced machine shop for exotic hard metals in the world, and one of the top for soft metals, this makes us the most capable machine shop in the world. We do things no one else has been able to do, I know, some try and fail. We use a number of measuring tools, from the simple hand ones, to Bronson gages, to laser trackers, to cord axle devices, some over 30 feet long. I have worked for Boeing for 35 years running machines, many of them are larger than houses, some much bigger. Most of what we make are the flight critical assembles that make the wings work and allow you to control the plane. Some of our machines are linked together with a system that brings in the parts. Many have a chip recovery system called a Henry System. Some of them rotate the beds up on their side so the chips fall off. One set of machines has multiple shuttle cars that are about 25' long. Most machines have tool loaders, and now a days the tools have chips in the holders to monitor what they are, how they are set, and how long they have been in work. I also some times run some smaller hand machines, they still are larger than a few vans, or PU trucks put together, most of the machines are run by computer systems. Our shop is nothing like a machine shop most people have seen, we are very high tech. You would be amazed at the complexity of what is in the wings. I can not say much more about what we do, security reasons.
What I can say is that the quality and accuracy of what we make is extremely high, every step of the way the parts and assemblies are inspected. The critical assemblies have ways to keep them working and the plane in the air even if some thing happens to them. You are safer flying than driving in your car by a considerable amount.

 

[Shield Arc]

Shield Arch, what bridge is that? Is it the new Bay Bridge section?

Yes it is. My company got the first three contracts. The first contract was 1-billion 316-million.

Speaking of Boeing, I have worked in several of their plants. I think it was the late 70s or early 80s I helped install 80-feet long milling machines in the Auburn plant. When we arrived to start working, there was a plywood fence 8-feet tall circling our work area. They told us we can use this bathroom, caught anywhere outside of the plywood fence, and you are unemployed!

 

[creekbend]

When I installed my W.R.Long toothbar on my FEL, I used a metal drill bit that I bought at TSC. I used a 1/2 inch drill.

 

[tomfifield]

That is funny Shield Arc, we do get a lot of classes in security measures, including what we can talk about and to who. That is all I can say on that! LOL.
I worked in a small shop in the National Guard running the kind of machines most people have seen before, I even got to drive tanks just for the fun of it.
I saw in the news they closed a section of the Bay Bridge the other day.

 

[Shield Arc]

I've done several projects at the Puget Sound Navy Ship Yard in Bremerton WA. We were always told basically the same thing. Caught out of your area and you will be escorted to the gate immediately! I think everybody I ever worked with could walk right by something top secret and not have a clue what we were looking at.:laughing:
Last project I did there was Pier D aircraft carrier pier. First pier to the right of the third aircraft carrier in this picture.

 

[gunmonkeyintl]

Well, not much use going back and forth on this...if you use calipers professionally, I think you'll change your mind. If you don't use them, well, as I wrote, not much use going back and forth...

Pompous much?

I work in Quality Assurance for a living, BTW.

Care to tell us what company you work for, so we can all be sure to buy from the other guys?

And, BTW, plenty of us work with measuring instruments for a living. You think you're the only guy on a TRACTOR forum who has a trades background?

Assuming they are zeroed, that caliper is reading .795". By your logic, if the carriage were sitting just to the right of the 1st hash, like it is just to the right of the 8th, then it would be reading .195", or if it was just to the right of the 0 hash, it would be reading .095".

There is nothing wrong with being wrong, it just makes you look like a DB when you do it with such pomp. Care for any steak sauce with that crow?

 

[murphy1244]

Pompous much?



Care to tell us what company you work for, so we can all be sure to buy from the other guys?

And, BTW, plenty of us work with measuring instruments for a living. You think you're the only guy on a TRACTOR forum who has a trades background?

Assuming they are zeroed, that caliper is reading .795". By your logic, if the carriage were sitting just to the right of the 1st hash, like it is just to the right of the 8th, then it would be reading .195", or if it was just to the right of the 0 hash, it would be reading .095".

There is nothing wrong with being wrong, it just makes you look like a DB when you do it with such pomp. Care for any steak sauce with that crow?

Good Eye!

 

[RoyJackson]

Pompous much?



Care to tell us what company you work for, so we can all be sure to buy from the other guys?

And, BTW, plenty of us work with measuring instruments for a living. You think you're the only guy on a TRACTOR forum who has a trades background?

Assuming they are zeroed, that caliper is reading .795". By your logic, if the carriage were sitting just to the right of the 1st hash, like it is just to the right of the 8th, then it would be reading .195", or if it was just to the right of the 0 hash, it would be reading .095".

There is nothing wrong with being wrong, it just makes you look like a DB when you do it with such pomp. Care for any steak sauce with that crow?

No crow required...unless you're hungry.
Look again...where that hash mark for .9 is...and the caliper is open just to that, meaning the reading is just below .900 (i.e. .895...actually, .894).
Even the OP wrote the thickness was .890 (plus a few). I should imagine he knows how to read his caliper.
Now, if the OP would be kind enough to post a picture of that caliper closed at zero, that would settle this discussion.

 

[k0ua]

No crow required...unless you're hungry.
Look again...where that hash mark for .9 is...and the caliper is open just to that, meaning the reading is just below .900 (i.e. .895...actually, .894).
Even the OP wrote the thickness was .890 (plus a few). I should imagine he knows how to read his caliper.
Now, if the OP would be kind enough to post a picture of that caliper closed at zero, that would settle this discussion.

Roy the .9 hash mark on the carriage is not visible. It will be almost another 1/10 of and inch of jaw opening before it will be visible. The carriage is slightly past the .8 hash mark. The numbers are to the left of the hash mark they represent. You need to get out your own calipers and have a look at them. When fully closed the carriage will be at the 0 hash mark, and the owner should adjust the dial to read 0 also. Which he has not done. We can only estimate the dimension as show at around .805 as this caliper is out of adjustment as evidenced by the hash marks on the carriage and the dial are not in agreement. I too wish the owner of this caliper would show us this caliper fully closed.

James K0UA