Annular Cutter set (7/16-"1-1/16"): https://amzn.to/38s627n Annular Cutter set (1"-2"): https://amzn.to/3eGQU7o

This is the way.

In the future try not sticking your hand so close the tool while it's running 🤣 you made my butt pucker with that squirt bottle

You can get them with a center pin and a self locking taper for installation in a drill press. I've used them in drill presses with great succes, just make sure to use the center pin and have a good center punch

these cutters are shockingly inexpensive. I was expecting $100+ per piece like you see with fancy router bits...

If you're ever gonna use those annular cutters in a magnet machine remember once your in don't stop drilling until your out. You will never get the the same center point again and ruin your cutter while trying.

I maybe repeating a tip and if so I’m sorry. But you can use a piece of 1/2 or 3/4 steel banding material to bend into a W or V and it makes a wonderful spring to hold parallel up in your vise.

Didn't expect the mess

In the UK we would call these a Rotorbroach... I guess as its technically a broach that spins?

Also called a core drill.

Rotorbar cutters for another term or if any one wants to get good quality Or if working on sheet q max cutters are another good purchase but ya pay for what ya get

Just use a hole saw

seeing this makes me wonder why they don't manufacture holesaws for wood with flutes on the outside. the flutes on the outside of the annular cutter are pulling the chips up and out of the cut, whereas with a holesaw the chips just get ground into the gullets of the saw teeth and stop you from cutting. interesting.

I would buy some but they’re expensive, especially if they only work once a year

Wow! 😲

Adam I have been a steel worker for years and have a lot of experience with these bits and if every 2 or 3 seconds you release pressure it will not build up with material. More so for hard product like steel but will save the bit for a lot longer.

Oh and touching that while it's still spinning at all could de glove you in a blink of an eye

Its aluminum.... My home shop has a home made cnc router.... It cuts holes really nice. With a 20 dollar end mill. And I get a little billet from the center of the hole to. Just saying.

A tool you might find handy, https://youtu.be/mRc7ZDRcgrQ Advoko MAKES remakes his tools from the past and present I presume to help work on his log cabin. While there he also works on side projects like, water wheel powered mill to make flour. The original reason I was going to bring this gentleman up, is he made a bear proof door for his cabin that someone tried to brake through, and failed. He wondered out loud why someone would to pry the door apart in the middle when it wasn't locked, and asked everyone watching to come up with ideas of why a person would do this. I suggested that the door may have got wet and swelled a bit, and froze shut so the guy tried to pry it open from the middle, but someone suggested that was unlikely. Maybe you guys can figure out why lol.

Why no hole saw?

Man...when he pinged the cutter to the aluminum, my ears blew out

So why would it not be a simple metal core bit

hollow end mill

How I wish the equivalent wood tools could work this nicely.

these blew my mind when i first used these with mag drills 5 yrs ago, love them

Hole saw 🤦‍♂️

Soooooo....its a hole saw

Or turn that mill into a cnc mill. Linux cnc and stompy nema 42 motors. Best tip you will read today. Its easier then you think.

Trepaning.. old is cool trick

Forbidden cotton candy 5:48

Ive sharpened theses on a daily basis as a saw doctor and i have never seen anyone running an annular cutter at that speed i could be wrong though

🤣🤣🤣 true story

Looks hard to center without a pilot. What if the plug gets stuck?

My favorite tools.... Harbulary cutters

That was not drill but endmill.

This is just a hole saw, but for machining

Surprised Adam doesn't own a CNC machine. A cheap tormach is under 20. Still cool though, gotta keep this in mind.

I use something similar to drill big holes in airplanes.

Adam must like being the hobbyist I feel like with his money he could have a Cnc machine no prob

I took machine shop in highschool and the first thing that came to mind when you asked about making a hole that size was using a smaller end mill and my stomach turned at the thought. Watching it work through that aluminum as me completely sold on these, as soon as I get my own shop I am getting some annullar cutters

Ding ding!

I work as a CNC machinist at Edwards AFB, CA and I use those cutters quite often. We call them Slugger Cutters, because it leaves that fancy little slug in the middle. I've used them on steel and even Titanium. It takes longer, but if you have plenty of coolant and time, you can get through any material.

This reminds me of one of the older guys I work with at the machine shop. He’s fixed machines his whole life and loves those things because they are so quick to throw a hole in. The young me says give me that I’ll throw it on the Cnc and mill it out in five minutes. He always does it quicker ....

Hole saw?

I am always shocked by your recent discovery of an old, famous tool. I mean, it happens to me constantly. Every day people say to me, “I can’t believe you’ve never heard of this tool.” But, I’m not Adam Savage! I can’t tell you how much better these segments make me feel as a hobbyist.

In the beginning i thought to myself “it’d be nice to have something like a hole saw like with woodworking.” Then Mr. savage pulls out a metal hole saw. Definitely an amazing tool.

I find it hard to believe that this is the first time Adam has seen a Hole Saw....

Strange that you dont know them before, as here in Germany/Europe everyone doing a little more home improvement knows a hole saw (I know its for a different material, and it can be even used with a hand (power) drill, but its basically the same principle): The power sockets which are installed here are usually circular, and to install them the easiest way is to use a hole saw. So I assume your power outlets are installed into rectangular holes.

I now have a much greater appreciation for my hole saw bits. Been using them for years, taking them for granted... no longer!

A fancy hole saw.

Down here we call them "slugger bits".

I'm a sucker for real world practical knowledge. Thanks Mr. Savage

You need to send some of these to aVe.

Adam I always been mesmerised by wood and it possible creations so im building my own wood working workshop what tools do you suggest 😅

Butter smooth

Do they make them for stainless steel or galvanized steel

So its a fancy hole saw

As a machinist I feel like I could show this guy stuff that would make him awestruck.

ah yes, Harbulary cutters

Some needs to get Adam a set of hole saws ASAP!

Would a bimetal hole saw work for this application?

So...a hole saw...

@3:44 get some Kurt parallel separators

Dynamic milling

For best results, use cutters annually

Only issue is that 2" cutter is roughly $200, I buy 15/16" diameter ones at $100 in bulk. The poor man's annular cutter is a standard hole saw, you can only cut the depth of the tooth at a time though. Simply back out, brush out the cuttings and continue.

“It came from a good friend” so not Jamie I guess

I'v used a similar bits but the I never worked with anything thicker than 16 gauge

As a guy who’s used poorly maintained cutters like these, cooling fluid is essential for any longevity because these are annoying to clean out of holes if they shatter halfway through a cut

If you had a lathe with four independant jaws, then you can chuck up the block with the center of the hole as the center of the spindle and bore out the hole on your lathe. This also means you do not have to have a full set of different size tools to make the hole size you want.

You can also gradually increase the size of your drill bit; admittedly it would take much more time but it would be safer

I swear youtube is listening to me; i have litterally been using these particular cutters in a mag drill all week at work and this comes recomeended to me... EDIT: They are the tits though, been cutting through 85mm thick steel at 26 diameter like butter.

Well the cheapest option is to heat the aluminum up till it's almost liquid and then hammering a big spike through it

How about a shaped charge?

I feel if any of my high-school teachers were half as enthusiastic and interesting as adam i would have learned and retained alot more.

If you value your arms, never stick your hands near a drill press spinning that fast. The spirals of material coming off can grab your gloves or sleeves in a millisecond.

this is where CNC is so wonderfull

Now that’s sexy

I understand why you like that thing. It gave me a dopamine rush just to watch it in action actually.

I had no idea that these weren’t common tools! Love these things!

?!? These cutters have been out for years, he could of also used a hole saw (not recommended at all... but he could have)

Other options as well: hole saw (they make them for metal too) fly cutter (single tool adjustable to all diameters)

what's wrong with using a standard hole saw ? only Ali

Annular or Harbulary batteries?

Or, what we would call a "hole saw".

Where is your safety gloves adam?

It’s nice to see Adam excited

I'm only commenting to let people know I read this as "Anal cutters".

Annular cutter? That hurts just to say.

The problem with using an end mill to hog out that material is that the clamping and tool holder need to be very rigid or you will get chatter and harmonics. Not a problem in a manufacturing setting with CNC controlled feeds/speeds, but in the home shop you need other solutions like this. Great video!

I use those for guard rail with mag drill coming off bridges for the rub rail for plowtrucks very cool video!!

I grew up as a kid 10-16 ish watching your show with my dad, totally inspired me to be such a creative and do it yourself type of guy. Just now finding your channel ! Glad your spirits are high and you’re still informing the population!

So it’s like a hole saw for metal. Got it.

Can we just call it metal hole saw?

2:25

pffff those americans... i watch one russian guy's youtube, he usualy just put such and way more crazier stuff into a lathe to make a hole (and does it relatively safely)

SO you discovered a holesaw? YAWN

Got a sweet bridgeport. You can retrofit that with a cnc control and interpolate that hole. Would be a dream to have a home shop like that.

"Why is it so amazing?" If you have to ask that you're not a machinist

or a cnc machinist

It's like a hole saw and an end mill had a baby

The other problem with that big fat milling bit is that it cuts at all different speeds throughout the whole radius. The Annular cutter maintains an even cutting speed, as the cutting surface is limited to a very small portion of the radius.

Love the power feed ya got on your machine.

Adam....slow that rpm down....maybe 300-400 on such a large cutter....Big is slower , small is faster.

Gotta watch the heat on those guys though. My coworker broke one in the side of a flatbed trailer we were fixing up and it took us forever to get the hardened shards out. They are nice, though!

When working with sheet metal in thinner applications a simple hole saw works wonders. Similar technique of slow speed, cutting fluid, and consistent pressure via drill press or mill works wonders. This anullar cutter basically works as a reamer and a hole saw all in one. I will be looking into getting a set of these anullar cutters for my sheet metal shop for thicker and more precise applications. I wonder if you could cut straight through square or rectangle tubing for reliably accurate pass through holes...... Great information Adam!

As a locksmith. Annular cutters are a must have.

How much less material? Adam: just holds up blank he cut out