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13 votes
Accepted

Adapting a 4-jaw drill chuck to hex shanks?

Drill presses usually have a standardized chuck connector, such as Morse Taper (MT) or Jacobs Taper (JT). These are followed by a number to denote the size (MT2, JT3, etc.). You can take your ...
Eli Iser's user avatar
  • 3,610
9 votes
Accepted

How to properly sharpen a Forstner bit?

I don't think you can sharpen a Forstner bit accurately enough with abrasive paper. Even if you glue it to a small slips of wood to make rudimentary files from it these won't be particularly stiff so ...
Graphus's user avatar
  • 66.3k
7 votes

How can I drill a D-shaped hole to make a custom wood knob for an old stove?

It appears from the description and the photo that the stub cross section is in essence a circle with a chord removed, basically it's a cylinder with a flat bottom. The easiest way to create a ...
Graphus's user avatar
  • 66.3k
7 votes
Accepted

How to use a very large Forstner-style bit

Not to be overly picky but I think it's important to point out that this is not a Forstner bit, no matter how it's named by the manufacturer. It's clearly derived from them of course, but all the key ...
Graphus's user avatar
  • 66.3k
6 votes

Is there a way to extend the length of a dowel blade?

TL;DR Return or sell the 2x4, "drill bit" / "dowel blade" and/or skip lunch and use the money to buy a pack of 1000 ready-made dowels online. Is there a way to extend the length of a dowel blade? ...
RedGrittyBrick's user avatar
6 votes

How do you drill concentric holes of different diameters on a drill press?

Forstner bits have a small point on the end which leaves a slight indentation in the wood in the center of the hole. Use this to align your drill bits after changing them. But, to do this, you'll have ...
mmathis's user avatar
  • 2,622
6 votes
Accepted

Is it a problem if my countersink bit is slightly larger than it needs to be?

It's perfectly fine and common practice to use a countersink bit that is bigger than the taper you make with it, regulating the taper diameter by how deep you go. A vertical wall above the taper is ...
scanny's user avatar
  • 2,199
5 votes
Accepted

How can I recreate this wine rack (ovular holes, proper angle, etc.)?

My guess is the holes were created with a forstner bit. There are lots of ways you could do it, for example you could use a hole saw, but forstner bits in a drill press produce the cleanest holes. ...
Katie Kilian's user avatar
  • 2,772
5 votes

1/16 bit to cut through 1/2" MDF

Good luck not snapping the bit, which is the practical reason such bits are hard to find. 1/4" cutting length might allow (with proper registration) cutting from both sides (have to mirror the ...
Ecnerwal's user avatar
  • 970
5 votes
Accepted

What is the difference between a black oxide bit and a titanium bit?

Black Oxide Bits coated with black oxide should be cheaper than titanium ones. They have decent heat resistance. Most sites that talk about the breakdown between the types rate these for better water,...
Matt's user avatar
  • 20.3k
5 votes
Accepted

Forstner Bits without Brad Point?

If you grind off the tip you'll want to use a guide block to make sure the bit doesn't wander when you're starting the hole. To make a guide block just drill a hole the same size through another ...
SaSSafraS1232's user avatar
4 votes

Is it a problem if my countersink bit is slightly larger than it needs to be?

It's actually standard practice to use a countersink bit that's larger than the countersink depression you will make in the wood, precisely because you don't want that little vertical side wall1 ...
Graphus's user avatar
  • 66.3k
4 votes

How to make a 3/4" flat bottomed hole?

I have used forstner bits where the the center spurs are removable for (presumably) just this sort of job. See http://www.finewoodworking.com/tool-guide/product-finder/mlcs-forstner-bits.aspx and ...
Dave Smylie's user avatar
  • 1,055
4 votes

Triple flute drill bits Vs. 2 flute drill bits

They cut faster and cleaner. Negatives that I know of is cost (they are more expensive) and heat. They will heat up quicker because there is less steel there. Too much heat and your bit is dead.
Jimmy Fix-it's user avatar
4 votes
Accepted

How do you drill concentric holes of different diameters on a drill press?

You can drill the smaller through-hole first, then use a counterbore tool. The end of the counterbore will use the through-hole as a guide and will cut a flat-bottomed hole of a larger size exactly ...
MTA's user avatar
  • 166
4 votes

What is this drill bit?

Every thread I chase returns to only one item, currently listed on eBay as a Roberts Company 3 bit fly cutter with pilot. The one on eBay has a solid rod in place of the drill bit, but that's trivial. ...
fred_dot_u's user avatar
  • 2,909
4 votes

Are there square-taper drill bits larger than 1-1/2" for hand braces?

You may find that you need a brace with a larger than normal sweep for boring a hole this size. They were manufactured in various sizes. A more common configuration for an auger of this diameter ...
Andrea Williams's user avatar
4 votes

Are there disadvantages to quick-change drill and driver bits?

These kinds of quick-change bits are very handy, but there is inevitably some slop in the fit; that is, if you place your finder on the drill tip you will probably be able be able to rock it slightly ...
perlyking's user avatar
  • 156
4 votes

How to remove a 25mm drill bit stuck in oak sleeper

It seems that your pieces of wood have shifted somewhat since you started drilling. If you can eyeball the 3 pieces to see which one(s) seem out of line, use one or more clamps to persuade the wayward ...
FreeMan's user avatar
  • 6,765
4 votes

How can I drill a D-shaped hole to make a custom wood knob for an old stove?

You could drill a hole the the exact size of the semicircle and then on the one side you could chisel out a square section large enough so you could insert a small block of wood (1/4"1/4"x1/...
Marmiketin's user avatar
4 votes
Accepted

When should I use a tapered drill bit vs straight drill bit for countersinking wood screws?

As I mention in my Comment above, there are no clear reasons to prefer one type over the other for varied materials, except possibly whether you commonly use straight or tapered screws. So if you ...
Graphus's user avatar
  • 66.3k
4 votes

Using tape to thicken shank of the endmill/rotary bit/drill

That sounds like a good way to get yourself seriously hurt. There is no way Tape can handle the forces generated nor the heat from spinning at 32000 rpm. There is a reason they are steel shanks. ...
bowlturner's user avatar
  • 16.1k
4 votes
Accepted

Cutting a stack of paper into a shape with a router

Is this a workable approach? I don't think so. I think a spinning bit is going to give you a fairly rough edge, and it also won't get into the inside corners that your shape has. Is it safe, or am I ...
Caleb's user avatar
  • 9,588
3 votes

How do you drill concentric holes of different diameters on a drill press?

Similar to the other answers, but for any drill bit type: Drill a very small pilot hole deeper than the shallowest, big diameter hole. Use a standard twist bit. Limit depth if this is to be a stopped ...
FreeMan's user avatar
  • 6,765
3 votes

Are there square-taper drill bits larger than 1-1/2" for hand braces?

Irwin makes adjustable bits that allow holes up to 3" in diameter to be bored with a hand brace. There may be other options available on EBay. Here is Irwin's web page for their versions of it.
LeeG's user avatar
  • 8,044
3 votes
Accepted

Am I selecting the correct drill bit for this job?

The tapered bits are the proper bit for that process. You can by (and most do) with just using a properly sized standard drill bit. Here is a chart for screw size vs bit size based on the type of ...
LeeG's user avatar
  • 8,044
3 votes

How strong is a titanium coated bit?

As one of the comments has already touched on this is actually impossible to answer. It's a "How long is a piece of string?" question. How much longer does a titanium bit last compared to other ...
Graphus's user avatar
  • 66.3k
3 votes

Replacing small drill bits without buying new sets (or preventing breaks)

I assume you are using a typical hand-held powered drill? The shape and position of the handle with respect to the bit makes it hard not to apply bending force to the bit. I like using an old-...
Jambo's user avatar
  • 526
3 votes

Replacing small drill bits without buying new sets (or preventing breaks)

Small drill bits must be spun very fast and "pecked" much more frequently than larger bits. Factor 1 - Cutter surface speed The surface speed of a drill bit is how fast the cutting edge moves across ...
scanny's user avatar
  • 2,199

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