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BLUE BOAR TUH14 - 14 Piece Super Duty Tungsten Carbide Hole Saw kit 2-3/8" Cut Depth. Deep side gullets for fast plug removalThe self feed are fine for wood but struggle with tougher materials and I would never use them on hard decking like Ipe or Hardie siding or backer board or many other places where the tungsten carbide hole cutters work great. For light duty jobs the new Bosch spade bits work great on a cordless drill where a perfectly straight hole is not required. I found that my big gullet hole cutters with an extension would make a hole 6 times as fast and that I did not need my corded stud drill most of the time. When I do need a straight hole I grab the Blue Boar TCT hole cutters and the Hole Pro shield with their arbor adapter for hole saws and make a perfectly straight cut every time.XL-Arbor Kit uses ABS shield & adjustment knob from Hole Pro X and CL model hole cutter kits. Cordless Drills can cut holes 3x as large as with bi-metal hole saws. I have used the Milwaukee self feed drill bits for years and dealt with nail damage and the need to use a large and heavy corded stud drill.
No plug to get out but then there are all the shavings that someone has to deal with. Even with a triple top plate I could cut out each piece of wood with the TCT hole cutter and drop out the plug and then do it 2 more times and my total cutting time was 1/3 of that with either an auger or a self feed bit. It is a very old-fashioned design that is an improvement over a hand auger or a hole saw but otherwise slow and not terribly efficient. Arbor adapts shield to work with both 1/2"-20 & 5/8"-11 threaded hole saws up to 2-1/4" deep to control dust, provide straight cuts & control cutting depth.With corded drills you can get away with using almost anything as a hole cutter but with cordless drills in general and in particular with the new lithium-ion drills a modern hole cutter makes a big difference in performance. As self feed bits go the Milwaukee are as good as most and the cases are the best at protecting the edges of the cutters - at least until you hit a nail.I was trying out our different cordless drills and found that it took nearly as long and very nearly as much battery draw with the self feed bit as a bi-metal hole saw. Best part was that I could use a 18 volt cordless drill and make 50 holes with one battery.
Cut 10x as fast and use 1/40th battery charge.
Compared to what these bits do for me, this minor setback really doesn't bother me at all. Overall this is a great product. They drill really fast and do the job right. These bits will not cut through nails so what I like to do is carry an extra set of bi-metal hole saws to cut out the nail then go back to using these bits because they're alot faster than hole saws. I will agree though at times when your drilling through a stud that towards the end, when the spur is past the end and already sticking out of the other side, you do have to put alot of pressure on the bit in order to finish drilling the hole.
I told this person that I have never seen a US made tool in my life that did not bear "made in USA" markings and that these bits have no such markings. I also told her that her information cannot be correct as I have seen "made in China" on individual bits in Home Depot. The Chinese ones have "made in China" in tiny print on the packaging and no marking whatsoever on the bit itself. So, I know after this examination how to tell which of these bits are which. Real pros know what I am saying is true. These bits are made in China yet there is absolutely no indication anywhere on the bit itself or the packaging of country of origin.
The USA ones have USA on the packaging and engraved on the bit. The marking on the bit itself where it says the size is laser etched and NOT engraved like the USA ones. I called Milwaukee on the phone to inquire as to why there was no country of origin on this set and they flat out lied to me and told me that the bits are made in the USA. Buy Chinese metal and it will break on you and it is simply not safe to use. I have seen individually packaged bits at Home Depot and some of them are made in USA and some of them are made in China. I do not buy Chinese made tools and certainly not expensive drill bits like these.
These bits are simply too expensive to be made in China.Look elsewhere. The Chinese may make some things OK but in my experience tools are not one of those things.
You do have to put some pressure to make that last little cut through the stud, and they can clog themselves going through multiple plates. After having used them to rough in various wires and pipes on my house, I couldn't imagine not having them for future rough-in work. You do need a drill with a 1/2" chuck if you are not using a Hole-Dawg. These things tear through wood like there is no tomorrow. They work superbly.
Yes, everything the other poster said is true. But man do these things work. They literally pull themselves through 90% of the board. Not that you want to, but you can also cut through nails with these bits.
The bit works well if in soft wood. When cutting deep holes the cuttings making the bit hard to get it out of the drilled hole. When cutting through stud wall I find the bit getting stuck in the wall from the tear out on the back side of the stud. Once the spur in through the wood you need to apply a lot of pressure on the drill for the bit to cut through the stud.
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