I confess that I know next to nothing about working with tools. With
that said, I'm doing a small project at home that called for 2 cuts
with a 2-3/8" hole saw. I went out and bought the saw blade for my
Ryobi drill, brought it home and got everything ready to do the cuts.
Turns out I can't attach it to the drill. There's a large threaded
hole on the back of the blade but I don't have anything to use to
attach to my cheap, bare-essential drill. What do I need? I've looked
online and I've seen things like arbors and mandrels mentioned, but I'm
not really sure what would be appropriate. Any help would be greatly
Industrial quality holesaws use a (3/8"?) screw-in arbor up to about a 1"
dia cutter. Over that size, they screw in and lock with two fixed pins.
The arbor shank size for the larger bits requires a 1/2" drill. I can't
recall how the hardware store ones lock.
Don't want to rain on your parade, but to safely operate a hole saw that
size requires a right angle drill, IMHO.
Let a saw that size hang up in the hole and rip a straight drill out of your
hands before you can let go of it and you will know why you use a right
Next, you need an arbor for that hole saw, about $15 should do it.
Any decent industrial hardware store or Grainger, if you have an account,
will have what you need.
Don't mean to rain on yours, but I do it all the time. The cheap
drill probably doesn't have the power to wrench it from his hands, and
the chuck will probably slip before his wrist gives out. ;-)
It kinda depends on what he is planning to drill, and how fast he
plans to try it. Obviously, a 3" hole in styrofoam isn't as strenuous
a task as 3" of SYP.
I do it as required too. I don't own a right angle drill so I use my drill
motor for everything. Mine is a DeWalt that has plenty enough power to give
you a good wrench if you're not paying attention, ergo my suggestion to
drill slowly. Yeah - you can certainly get a bite if you wander off of
true, but with a reasonable speed it's not something most people couldn't
handle. I've just come to accept over the years that drill motors can give
you a twist in a number of uses so they require more than just casual
attention when used. I have used right angle drills but largely found them
to be quite awkward, slow and generally not much of an improvement over a
regular drill motor with the possible exception of confined spaces.
Ever consider picking up a low cost right angle attachment?
They also can be a PITA until you get used to them.
I have an 18 VDC DeWalt and it can definitely bite you, even at low speeds..
Amen, which is why I use a right angle drill.
Usually operate mine at 200 RPM which allows me better control if the saw
Most of my work is involved with boat construction.
Most of the time you are standing on your head, working in tight places,
wishing you had a tail like a monkey you could use to grab onto
Well, since you admitted you know next to nothing about working with tools,
then let me step up to help you. First, you can't do what you want to do
with just a hole saw. You'll need at least a tablesaw, a jointer and a good
router. Trust me on this. If you really want to do the job properly,
you'll also need a bandsaw, a drill press, a planer (or a dozen or so good
hand planes), and my favorite - a set of cutting torches. I know you may
find the cutting torches to be a bit odd right now, but again, trust me.
Thousands of jobs go easier with a set of torches.
Now, if you really don't care about doing the job the right way and turning
out a quality product that you can be proud of and expect your grandchildren
to enjoy years from now, you can probably just go to the hardware store and
as the clerk for a mandrel to fit your particular hole saw.
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