Questions tagged [drill-bits]

Used to bore holes through wood. Types, techniques, safety.

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5
votes
5answers
1k views

Bench grinder, tool sharpener or sharpening stone?

I have a chisel set and drill bits that have never been sharpened after purchased and I want to purchase sharpening equipment, but I'm confused by the variety of options. So far I've found 3 possible ...
22
votes
3answers
5k views

Which type of drill bit for which jobs?

I was looking at a 35 piece wood drill bit set in an online shop Although only Forstner bits are present for larger size holes, the size ranges overlap so .. If I want to drill a 10mm hole I have a ...
7
votes
3answers
13k views

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

I have a black oxide bit and a titanium bit but do not understand what the difference, if any, is between them. Is it how long they last or how they cut the wood? Anything on this would be great!
13
votes
3answers
1k views

Tiny core bits for broken screws

I have on several occasions broken screw heads in pieces where I can't readily access or cut into the joint they're securing. Is there such a thing as a tiny core drill bit for cutting around what's ...
28
votes
11answers
7k views

Why do I go through so many philips bits?

When fastening 2x lumber I keep grinding down the bits. I predrill a hole and a push hard as I can on my hammer drill but still wreck the bit. I'm using 2.5" gold screws. Can anyone help with a better ...
15
votes
2answers
96k views

How to identify a wood drill bit from a metal drill bit - and does it matter?

I have a drawer of tons of drill bits from all over the place - many donated. Almost all of these bits are dull black or gold-ish colored and don't have much else in the way distinguishing them (...
9
votes
3answers
5k views

Do auger bits have advantages?

While not the focus of the question I wanted to point out that when it comes to drill presses I almost always see forstner bits suggested here at WW (for good reason of course). Much to my surprise ...
13
votes
5answers
2k views

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

It seems that every few months, I've broken all my pilot hole drill bits because they're so easy to break (and so frequently used). So, every few months, I buy a whole new pack of drill bits and throw ...
8
votes
6answers
4k views

Why is my countersink bit making hexagonal holes?

Every time I use my countersink bit, it creates a hexagonal hole. I've tried a hand drill, an electric drill, drilling fast, drilling slow, soft pressure, firm pressure - virtually every time it will ...
6
votes
2answers
1k views

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

I just want the ability to countersink (occasional use) and I have 6-7-8mm head screws and I'm buying a single 8.3mm countersink bit (Makita HSS P-73542 3 flute). But what's stopping me from not ...
2
votes
2answers
2k views

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

I recently bought a 1/2" 2 flute end mill bit, which fits in my table top drill press (1/2" chuck). I'm making perfectly flat bottomed holes (won't be seen in the final project) that go almost all the ...