Big drill bits

[chim]

View attachment 635333

Now THAT's a big step bit

 

[guitarman]

you can order good quality drills from MSCdirect.com also McMaster carr they are both industrial suppliers but expect to pay a price.
this is direct from MSC part image
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MSC #:65628596
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DORMER - 1-1/8", 3MT 118ｰ Point High Speed Steel Taper Shank Drill Bit - Oxide Finish, 175mm Flute Length, 296mm OAL, Spiral Flute, Series A130
List Price:
Web Price:
$211.47 ea.
$186.10 ea.
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Brand: DORMER
Mfr Part #: 0021613

unless you have a good drill press any thing over 1inch might be worth checking around your area for a shop with a radial drill they might do one hole pretty cheap.

 

[downsizingnow48]

I am wondering why more folks do not use carbide tipped annular cutters with pilot bits like I referenced. They are (relatively) inexpensive, available in sizes from 9/16 to 4 1/2, easily manageable with a hand held drill, leave a round hole correctly sized, and cut fast. I use my old Milwaukee 1/2 hole shooter and black plumber's cutting oil or tap magic.

 

[guitarman]

yep that is a good option

 

[ArlyA]

I am wondering why more folks do not use carbide tipped annular cutters with pilot bits like I referenced. They are (relatively) inexpensive, available in sizes from 9/16 to 4 1/2, easily manageable with a hand held drill, leave a round hole correctly sized, and cut fast. I use my old Milwaukee 1/2 hole shooter and black plumber's cutting oil or tap magic.

Large hole drilling can easily become a ^%$!*))&%$ in a press. I've not tried this style of holes saws and now you've peaked my interest in these carbide tipped ones.....

 

[fried1765]

Large hole drilling can easily become a ^%$!*))&%$ in a press. I've not tried this style of holes saws and now you've peaked my interest in these carbide tipped ones.....

I think ease of use may depend somewhat on the quality/speed of the drill press itself.

 

[radios1]

I am wondering why more folks do not use carbide tipped annular cutters with pilot bits like I referenced. They are (relatively) inexpensive, available in sizes from 9/16 to 4 1/2, easily manageable with a hand held drill, leave a round hole correctly sized, and cut fast. I use my old Milwaukee 1/2 hole shooter and black plumber's cutting oil or tap magic.

maybe because the pilot bits easily break when drilling using a hand drill!!.. all it needs to do is slide around enough to make the pilot hole larger than the pilot bit, then the outer bit takes over, and breaks the pilot bit!..

 

[downsizingnow48]

I've been using them for about 8 years now and never had a pilot bit break.

 

[Industrial Toys]

That's what I do, but a machines friend scoffs at the practice. I once had a set of Silver Demming Bits from Princess Auto and quickly ruined them. Think I was going too fast. Had like a 1/2" pilot and 1" drill bit. Hole stayed the same size and the bit got smaller. Kind of funny actually. No trouble bringing stuff back to Princess Auto, but a waste of time.

Watched an angular cutter, grenade at the same friends place. Expensive oopsie.

 

[fatjay]

If you have an inch hole and need a 1.5” hole a pilot bit isn’t going to do you any good