Every time that I've used a hole saw, it's been a pain in the ass.
They're fine on thin Pine, but that's about it.
Even brand new ones will burn and stall my drill.
Are carbide hole saws "much" better?
I didn't even know they made them in carbide till I googled it a few
Sounds like you are operating at too high an RPM.
Anything above 3-400 RPM will be a problem.
To protect your wrists, you really need a right angle drill.
BiMetal hole saws do a good job, plain carbon steel not so good.
Have never found a need for carbide hole saws.
Unfortunately the lowest speed on a Shopsmith is still about 700 rpm,
too high for many uses, including this one. I bought a VS Delta
because of that, but still use the SS whenever possible due to the
excellent table and fence.
Carbide hole saws have an advantage that the barrel is thinner than
the kerf if the teeth. Less chance of binding, but taking the plug out
is no easier.... at least with solid surface and particle board.
I talked to a plumber the other day and he said that they use a self feed
drill bit. He said that they worked much better than a hole saw. They
obviously cost more. And they only come in certain sizes, apparently sized
for various diameters of pipe to go through.
I need to drill some holes myself soon in inch and a half wood. I know that
Harbor Freight has a few sizes.
I may pick up one and try it out soon. The only problem is that they only
have one size I need. I may have to go elsewhere to get the other size.
I have no experience with these kinds of bits. But I don't have to drill
that many holes so a cheaper bit should work for me.
I should point out that he had a super sized drill. I am not sure how well
this would work with a small, wimpy drill. I have a large drill I picked up
years ago that I hardly ever use. It requires both hands and much of my
bodyweight to keep it under control. That should work well for my
application. Either that or a drill press should work well.
I am al;so thinking tht this may not be the smoothest cut. Since it is
designed for a utilitarian purpose by folks who don't care about pretty.
Remember that old saying, "When the mass of the ass equals the torque
of the dork, etc"?
You need a BIG drill operating at low RPM to drill holes with either a
hole saw or a speed bit.
Hope that beast you have has provisions for a couple of long pipe
handle extensions, they will be VERY useful.
I'm a firm believer in right angle, low RPM drills for large holes.
BTDT, don't need the t-shirt.
The handles are quite long. The drill itself is quite heavy. The wood I am
drilling is soft pine. And I am a big guy. I should be OK.
Although I agree with you, I am not going to go out and buy an expensive new
tool for a few holes.
A quality hole saw arbor is about $15 and an 1-1/2" BiMetal hole saw
is about $10.
Hole saws are like potato chips, one is not enough<G>.
An intergral arbor saves a couple of $, but only if you NEVER need
Plunge router/bushing/bit combos work well for clean and fast holes in
pine. You just need a piece of 1/2" MDF and make a hole (plus 2x bit/
bushing offset) for a template. A couple of pencilled on cross-hairs
and you got bigger better faster.
Lower rpm helps, I tried it this morning -- at least it doesn't burn
or bind up but I'll try a carbide saw anyway.
Harbor freight step drills are JUNK by the way. Complete waste of
money. (I'm one of the fools who bought some).
Klein is the way to go and they work great on metal but for wood I'll
stick with the hole saw thing -- you're moving much less material that
Your use of a vertical drill press guarantees holesaw problems.
The holesaw design, unlike twist drills and augers, has NO
provision to pump out the sawdust. You have to raise the
bit a lot, or do tricks (a pilot hole at the perimeter allows
sawdust to drop through); I like the compressed-air blowgun
approach, but usually just stand there huffing and puffing.
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