Cutting A Perfect Hole
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- čas přidán 5. 08. 2017
- Over the years, we’ve discovered a number of tools that make the fabrication process a lot easier and often produce a better result. One example is the RotaCut Hole Cutters which allow you to consistently cut a perfect hole in everything from sheet metal to 4130 or titanium tubing and even carbon fiber.
In this video, Tim shows you how the tool works and some of the other benefits that come along with it such as a usable slug, not having to drill a pilot hole and much more.
Rotabroach cutters (also known as RotaCut) can save you time and money by drilling a burr-free hole and ejecting the center of the cut as a usable slug. A unique design requires far less horsepower to run, increasing the speed of metal removal and results in less material being converted into chips. These cutters are made in U.S.A and have proven their worth time after time in our fabrication shop.
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The information contained in this video is based on the opinion of Tim McAmis and his 30+ years in the motorsport and manufacturing industries. Any action you take based upon the content provided shall be done at your own risk. TMRC and its affiliates are not liable for any losses and/or damages in connection with the use of this information. - Auta a dopravní prostředky
Good video, I've been using those and larger annular cutters for years, they've cut thousands of holes and have given me great service.
Nice you shared the trick you use on carbon fiber to stop it blowing out the back side,thanks for another sweet video.
I agree these are very good hole making tools, also good for removing spot welds.
always something to learn. Thanks
thanks for the videos, great info..
Super cool you share your tricks
Annular cutters are awesome. Thanks for the tip on using then on carbon. I would have been worried about them being two aggressive for that. Also nice tip on drilling off set holes in tubing with them. Thank you.
Great stuff. I use alot of knockout dies [on steel and aluminum], and I always need a starter hole to use the tool - the smaller the die, the more critical getting the starter hole on center is.
have these. there nice for cutting spot welds also.
its like a mini jancy bit. what a cool idea
Yet another helpful video! Those cutters look so much better than even bi-metal holesaws!
WAY BETTER!!!!!
So basically is a mini annular cutter kit, cool. I love full size annular cutters so I'm sure once the set similar to this one that I ordered gets here I'm love them just as much
Very nice.
I watched another video where you used that cutter. I had to come here to make sure I wasn't missing a million $ idea. As soon as you mentioned it I thought why do all the cutters have a damn drill bit in the middle to make its own pilot? If it was just a smooth mandrel you could drill 1/8" or 1/4" pilot and put a smooth mandrel in the middle so it would never walk on you. It would hold the cutter perfectly centered. Awesome idea and i guess someone had it way before me lol
As a machinists we used to grind drill bits with a almost flat and leave the center for a pilot still the hole gets a little jacked up saves the fingers though lol
With the smaller sizes they are limited in the thickness of the workpiece but they will work for 1/2" plate also by drilling an 1/8" pilot and finishing the hole from the backside. Like your carbon example
Those are nice kits. I use them a lot. I have a guy that will sharpen the cutters. So if you get a bunch of them that need sharpened might be worth sharpening then replacing. Not worth doing 1 at a time though.
I like your shop nice and tidy, it creates trust.. Keep up the good work..
Look just like a rota broach or slugger bit with a modified shaft to hold the bit
What marine drive is that on the engine stand behind\beside you?
How do these do with stainless?
I just use Step drills for thinner material. Nice round hole.
These are much better. Step bit can wonder on you when pushing through each size. If you want the location to be as close to perfect at possible these are the cutters you should be using.
Step bits are for hack jobs.
For carbon fibre or fibre glass panels, I would use a spotting drill. They only cut on the point and not on the margins, this way your pilot hole will stay round and the the hole saw will run true.
Clamp or braze the spotting drill into the holesaw.
It was bugging me that it didn't bug him to not deburr that hole right away. I can't leave that for even a minute for some reason.
Nice video. Kit comes with no useful instructions. Had no idea how to use the washers.
We call them slogger bits
Im completely blown away that the drill press table doesn't have a fuck load of holes drilled into it. thoes that know understand