TPC
Wrenching Dad
- Joined
- Sep 20, 2007
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Were you making a cannon?
Gun drill. Rare in this configuration we understand.
No sir.
Quite common I assure you. Im pretty sure you could trepan that size hole as well. End up with a 3-4" dia rod to take home with you out of the 6" bore to boot.
Brian
No sir.
Quite common I assure you. Im pretty sure you could trepan that size hole as well. End up with a 3-4" dia rod to take home with you out of the 6" bore to boot.
Brian
gun drilling is extremely common, I have 3 customers within a mile of me who all have gun drilling machines. none that are 60' long. they do not advertise they have them though. they only use them to support themselves. lots of aerospace shops use them. pretty cool to see in person and yes I love it when they call to order drill heads.
Trepan :headscratch:
Noted oint
We understand is this configuration there's the one pictured, one in Texas, and another someplace on the East coast.
Doesn't matter, small potatoes, they have plenty of work waiting to be drilled. :thumbsup
Yessir. Trepan.
Like most of these machining threads I find it's like reading a mystery novel. Interesting, educational, captivating, even entertaining, only hoping that by the end of the story, I've got a clue what it was all about.
My exposure to amazing machines was due to my background of Industrial electrical contracting, so I've seen em and got em running, then stood back and watched the show. Pretty much everything else about them is a mystery, especially the terminology.
My final electrical project prior to retiring was a couple of years spent wiring up an experimental Fusion Reactor. A project that after 46 years I considered winning the "Superbowl" of my career, that's why I retired, it wasn't going to get any better than that.
So as much as I don't understand everything in these types of threads, I enjoy them none the less and I'll continue to follow along the best I can.
So yes sir ---- Trepan, noted
OH OH wait, I found it --- Edit Add ----- Thousands of years ago, people were performing a form of surgery called "trepanation" that involves boring holes through a person's skull ----
Now I understand
Like most of these machining threads I find it's like reading a mystery novel. Interesting, educational, captivating, even entertaining, only hoping that by the end of the
story, I've got a clue what it was all about.
My exposure to amazing machines was due to my background of Industrial electrical contracting, so I've seen em and got em running, then stood back and watched the show. Pretty much everything else about them is a mystery, especially the terminology.
My final electrical project prior to retiring was a couple of years spent wiring up an experimental Fusion Reactor. A project that after 46 years I considered winning the "Superbowl" of my career, that's why I retired, it wasn't going to get any better than that.
So as much as I don't understand everything in these types of threads, I enjoy them none the less and I'll continue to follow along the best I can.
So yes sir ---- Trepan, noted
OH OH wait, I found it --- Edit Add ----- Thousands of years ago, people were performing a form of surgery called "trepanation" that involves boring holes through a person's skull ----
Now I understand
So yes sir ---- Trepan, noted
OH OH wait, I found it --- Edit Add ----- Thousands of years ago, people were performing a form of surgery called "trepanation" that involves boring holes through a person's skull ----
Now I understand
I learned something today as well.
I always though the word was funny myself, never knew there was another meaning of the word. :yikes.
Thanks for the links, very cool video :thumbsup:thumbsup
In electrical speak we'd refer to that as core drilling, normally used for large hole penetration of concrete walls, different, yet similar concept, versus boring.
Red dogs machine shop:
View attachment 556657 View attachment 556658
When a $1000 drilling head grenades
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Gun drill. Rare in this configuration we understand.
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View attachment 556668
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Some RDP member trophy truck haulers out back
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A guy in Mexico builds them cheap or did, as his name spreads the price goes up.
3 for $16k.
I love drilling me some big holes deep.
Trepan :headscratch:
Noted oint
How do you control run out 10 ft in?
Ok, for all of us non macheeenists, can someone do some more splainin. This stuff is fascinating, but greek to most of us , or at least me .
Did you watch the video on this page that wsuwrhr provided ? http://www.amhollow.com/services/trepanning/
Very cool indeed :thumbsup
It's an interesting process for sure.. Basically a double sided cutter that cuts an OD and an ID at the same time, and leaves a core in the middle. That said for all the shit I've done in my lifetime and all the work I have subbed out, and the countless crazy aerospace parts we machined.. I have never sent something out for that process. LOL It's pretty specialty shit and you'd need something very deep and very long to make it worth while.
RD
How do you control run out 10 ft in?