Questions tagged [drill-bit]

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How do I drill a hole in a brass register vent cover?

I recently bought a register vent cover, and it didn't come with pre-drilled holes. I'd like to see if I can just drill the holes myself. The product page says it's made of brass, and I've heard that ...
Heloise Sciamma's user avatar
2 votes
0 answers
81 views

Drill bits for metal work? Why cant I seem to find ones that last?

Looking for some recommendations on drill bits for use with metal. I have a decent Drill Press that has a 500-3100RPM range, I use oil, etc. I’ve been trying to drill 3/8” holes in T-Bar Fence posts/...
scooter133's user avatar
1 vote
2 answers
241 views

How can I remove this stuck auger bit when there’s not much room?

I used a rectangular drill bit extension with an auger bit to drill a hole downwards through a hole for an electrical fixture. Sadly the bit is stuck now and I can’t manage to get it either in or out. ...
divB's user avatar
  • 1,255
2 votes
4 answers
1k views

Removing a broken SDS drill bit from the chuck

I have an SDS drill, with the bit broken off inside the barrel. Stripped a lot down, and can move the offending remains about an inch, using a magnet. Then it gets stuck. Tried oxy-acetylene to heat ...
Tim's user avatar
  • 5,318
3 votes
1 answer
1k views

What drill bit should I use to drill a 2-1/2" hole through 8" of concrete?

I'm having some electrical upgraded and I need to drill a 2-1/2" hole through my 8" foundation. The foundation is poured concrete and has small rounded stones inside. This house is almost ...
CodeVar's user avatar
  • 31
3 votes
1 answer
1k views

Why is this wood on my drill bit from wall framing a different color?

I was installing some new blinds and when I drilled into the framing above the window my drill bit had a darker color wood dust on it. Other places I have drilled at the dust is the standard wood ...
DR9412's user avatar
  • 31
2 votes
1 answer
822 views

Drill speed for ceramic tile

I am about to make holes in a ceramic tile (in order to attach an Ikea piece of furniture in the bathroom). As this is the first time I am going to do this, I have done some research and bought some ...
Roger V.'s user avatar
  • 139
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1 answer
89 views

Unknown Dremel bits -Need to identify

Any idea what these Dremel 3000 bits or parts do? I bought a second-hand used Dremel 3000, these bits came along with it. The cylinder shape bit (A in the picture) feels hard rubber/tyre and the ...
Tanvir's user avatar
  • 103
0 votes
2 answers
155 views

Tap and die for trailer hitch [closed]

I am trying to install a trailer hitch on my 2010 Honda CRV LX to tow 2 bicycles behind my CRV. The trailer hitch set that I bought included 4 bolts that bolt directly into the frame. My honda has 4 ...
Justin Todd's user avatar
12 votes
8 answers
13k views

What type of bit do I use to drill holes in stainless steel? Nothing seems to work

I recently bought some Damascus 1 inch ring stock (304 and 316 stainless). I sliced off about 8 mm of it using a bandsaw. I then stuck it in a vice and attempted to drill through it. I have tried ...
Rilcon42's user avatar
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1 vote
3 answers
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What dimensions is a "Size 6 Drill Bit"?

I've purchased some blinds from a UK company and their instructional video says to use a "Size 6 Drill Bit"... except I can't find an agreed definition on what size this is. Number Maniacs ...
Chuck's user avatar
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0 answers
38 views

Window Planter Box

I want to start this off by saying I’m a beginner, so if something is obvious, I’m sorry but I’m just learning. Anyways, I have a 4 foot long by 1 foot deep by 1 foot tall window planter box. My first ...
Maddie S's user avatar
1 vote
1 answer
76 views

Bit slipping on pocket hole screw

I have kreg #2 screws and i’m using the #2 square bit that it comes with. So I know the bit is not the problem. But when I drill and get less than half way in the bit starts slipping off the screw ...
user164851's user avatar
0 votes
2 answers
93 views

What is the name of this pointed drill bit (used here for MDF)?

This long, pointed, gradually wider drill bit from this video seems like an even better method to drill clean holes in MDF than the more common recommendation for brad-tipped drill bits. What is the ...
Sam7919's user avatar
  • 713
5 votes
3 answers
448 views

What is the purpose of these drill bits with two tips?

A friend of mine likes to buy old tools and smilar at car boots, and he picked up a set of bits which neither he nor his friends could identify. He showed me two of them: They have two tips, one ...
bertieb's user avatar
  • 395
4 votes
4 answers
11k views

What do the 1/4 , 3/8, and 1/2 in the impact drivers mean?

I bought my first impact driver--a Worx 1/4 & 3/8 impact driver. I am trying to buy sockets and realised that these sockets come with drive sizes mostly 1/2". I read more and I found that the ...
asmgx's user avatar
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16 votes
4 answers
14k views

What does the colour of drill bits mean?

I bought this set of drill bits. The set came with 3 colours of drill bits: Silver Gold and Black I do not know. What does each one of these bit colours mean?
asmgx's user avatar
  • 961
0 votes
5 answers
2k views

What kind of drill bit will go through both concrete and wood to sink concrete anchors through the sill plate?

I need to sink 8" TITEN HD concrete anchors into a foundation and through 3" of wood sill plate above the concrete. It would be nice to use one drill bit, but from my research it looks like ...
KJ7LNW's user avatar
  • 1,075
3 votes
1 answer
145 views

pilot bit for masonry hole saw

This seems like a stupid question, but I cannot figure it out ... I have a couple of masonry hole saws (carbide tips) that I am using to drill holes through a cinderblock foundation wall for various ...
RustyShackleford's user avatar
0 votes
2 answers
180 views

The drill bits in my SDS drill don't slide up and down 15mm in the chuck

Drill bits are meant to slide up and down within the chuck. In my new drill there's about 2mm of in/out movement in the chuck. (There's about 1cm if movement from the whole chuck, but I don't think ...
TheOnlyRick's user avatar
0 votes
3 answers
1k views

Why isn't there a single type of drill bit for both metal and concrete/bricks? [closed]

I have found that there are two different type of drill bits for the concrete/bricks and metal. Metal is so much harder than concrete and bricks. Therefore, from logic I would expect that the drill ...
gyuunyuu's user avatar
  • 325
3 votes
4 answers
13k views

Why can’t my hammer drill drill a hole in concrete?

I do have a hammer drill (Bauer 7.5amp, Harbor Freight) and some 1/2“ Bosch masonry hammer drill bits. I‘m trying to drill a hole into my concrete patio. I have made it one inch deep but that ...
mitchkman's user avatar
  • 521
0 votes
1 answer
225 views

Counterbore pilot guide

I'm looking for something to drill a 3" + 1" counterbored hole by first drilling with a 1" auger bit and then drilling with a 3" bit part of that way yet keeping it perfectly ...
g491's user avatar
  • 750
3 votes
3 answers
3k views

Tricks for fitting a 7/16" bit into a 3/8" drill?

I have a 3/8 hand-held drill and that's pretty much all I need for my projects. But now I have a project where I have to insert large dowels, and they will need a 7/16" hole. I don't have that ...
user766353's user avatar
2 votes
2 answers
5k views

Drill hole size for a given screw size in tile

I need to install a grab bar in a ceramic-tiled shower. I plan on drilling through the tile and screwing into studs (no anchors) with stainless steel screws. I know I need to use a carbide or diamond ...
yroc's user avatar
  • 125
0 votes
1 answer
84 views

Difference between Impact vs normal drill bits for Masonary with sufficient BPM impact

So a Disclaimer - This is not a product review (so please do not misunderstand the intent) I have got a trades-grade impact drill - DeWalt DCD795 which has enough torque and impact bpm to drill ...
ha9u63a7's user avatar
  • 103
0 votes
1 answer
664 views

Can't drill hole deep enough in concrete

I need to anchor a shed to cement or concrete with ⅜" x 3" anchor bolts.  I have a Bosch "long life in concrete" ⅜" bit.  The drill motor is medium-size but was able to get ...
WGroleau's user avatar
  • 161
0 votes
1 answer
2k views

Choosing pilot hole size for brick

I'm new to drilling but I've read up as much as I can. I need to drill some 8mm holes in brick (not the mortar) for 8mm rawlplugs. I'll be using a 550W Bosch corded hammer drill and I have a set of ...
William Turrell's user avatar
-1 votes
2 answers
1k views

How can I mount something heavy on a wall that's too hard to drill more than 1/2 inch

I am trying to mount a wooden trellis on my living room wall. The house was built in 1890 and later remodeled. Most interior walls are standard drywall with studs, but the exterior walls seem to be ...
Robin's user avatar
  • 1
1 vote
1 answer
221 views

What to do when drilling into steel has no effect? [closed]

I read a few online articles on drilling into metals. The advice is mostly the same: Predrill a smaller hole. Drill slowly — low rpm. No need for fancy equipment — any drill bit specialized for metal ...
Martin Drozdik's user avatar
0 votes
3 answers
606 views

I need a drill for driving ground rods [closed]

I'm absolutely tired of renting here. I need a drill for driving ground rods and soil is moderately hard one I wanted to know how big/heavy drill I need for ground rods. 10-13 amps, and around 12-15 ...
allenanupam's user avatar
1 vote
3 answers
4k views

What diamond drill bit size is recommended for 1/2" pipes?

I have 2 pairs of copper stub outs (1/2") and one 1/2" PEX pipe that I need to drill holes in porcelain tiles I can't figure out what diamond drill bit size to order. This chart tells me I ...
MiniMe's user avatar
  • 3,402
-1 votes
1 answer
4k views

Not sure what drill bit to use for 6mm masonry anchor into brick

Similar to this question diy.stackexchange.com#q136613 but not sure exactly and I still don't know what I should do, so I'm opening a new one. I have a masonry anchor that is 6x30 and want to drill ...
IsaacS's user avatar
  • 147
0 votes
0 answers
124 views

Hilti TE2 locked without bit

I’ve got a Hilti TE2 and am unable to put the bit in. I think I might have accidentally locked the chuck without a bit in it and now unable to unlock it to put the bit in. Any ideas?
Ben's user avatar
  • 1
11 votes
4 answers
6k views

How can I drill my own electrical knockout in an appliance housing?

I would like to drill a regular (I think 3/8") knockout on a metal appliance housing. It is not tabbed like on a metal handy box. Which drill bit should I use?
amphibient's user avatar
  • 7,489
0 votes
1 answer
119 views

Drilling speed/pressure/coolant guide

I have been led to believe that it is very important to the performance of the job and the life of the bit to use the appropriate speeds, etc., when drilling various materials. I was about to purchase ...
davidgo's user avatar
  • 285
0 votes
2 answers
350 views

Is it safe to use short bits from manual screwdriwer with electric drill?

Is it safe to use short bits (from manual screwdriver) with electric drill Ryobi R18PD3? Length of the hexagonal part (that fits into the drill) is 1.5cm. Original bits seems to be a bit:) longer. ...
Bartosz Bilicki's user avatar
1 vote
0 answers
234 views

Is 6 holes in ceramic tiles the life of a drill bit?

I have always been unwilling to drill into ceramic tiles for fear of cracking them. But tomorrow, I am having a tile wall demolished, so I figured today I would get some drilling practice in while the ...
Oddthinking's user avatar
1 vote
1 answer
2k views

Drilling out steel screws

What technique do I need to use for drilling out a steel screw? Might be stainless, not sure. I'm using a Milwaukee M18Fuel hand drill and Milwaukee cobalt bits. It's a powerful drill. I've made a ...
Dan's user avatar
  • 73
0 votes
1 answer
199 views

What do we call this drill bit?

I was looking at few videos on "how to screw in MDF". I found the one which I needeed. Unfortunately he didn't mention which drill bit he was using. Here is the photo of it. I am looking to ...
Rakesh Juyal's user avatar
1 vote
4 answers
532 views

Is a spade bit the right tool for burying a 3/8″ bolt in plywood?

Suddenly the two hardware stores near me have all sorts of varieties of spade bit sets from multiple manufacturers displayed in prominent aisles, which makes me wonder whether that's the reason I am ...
Sam7919's user avatar
  • 713
1 vote
1 answer
117 views

How can I tell if my tile is ceramic or porcelain?

I need to drill into some tile. How can I tell if it's ceramic or porcelain? I want to use the correct drill bit.
Therese L.'s user avatar
-1 votes
1 answer
150 views

Is my electric impact drill useless?

** I am not seeking a product review, but right/wrong choice for my drill machine** Hello, I have a Terratek 500w impact drill (https://www.amazon.co.uk/gp/product/B00H3KYLQY/ref=...
ha9u63a7's user avatar
  • 103
1 vote
2 answers
3k views

Are There Any Dremel Cutting Wheels That Actually Cut Steel?

Recently,I was using my prized, vintage Dremel Moto Tool (model no. 2) in an attempt to sever a 1/8” diameter steel screw. I was using Dremel’s S-99 steel cutting wheel. Thinking that the cutting ...
Julian's user avatar
  • 11
2 votes
2 answers
111 views

Drilling holes in towel hanger hardware

I'm trying to hang a towel hanger, but with my own anchors. I'm struggling to drill a hole in the steel hardware that gets bolted to the wall: I'm using a hand drill, running at about 450rpm. I've ...
flaviut's user avatar
  • 164
0 votes
1 answer
10k views

What’s preventing my drill from going though my wall?

I’m trying to drill holes for 3/16 screws in the walls of my room, but the drill is unable to penetrate through some parts of the wall. At first I thought I hit a nail, so I tried making another hole ...
LRitter's user avatar
  • 99
0 votes
2 answers
938 views

Why do only some drill bits slip out my drill chuck?

I have an adored drill/driver that has always struggled with some cheap bits I had from another kit. Drilling into wood goes as planned, but then when pulling the bit back out of the wood, the bit ...
Evil Elf's user avatar
  • 3,819
15 votes
11 answers
4k views

Is it safe to use a drill bit with a half broken tip?

I broke the tip of the masonry drill bit. The tip looks like this now. Half of it is missing, and it seems that the tip itself moved slightly towards the center (since at the bottom, it is parallel to ...
Arseni Mourzenko's user avatar
14 votes
11 answers
6k views

How can I drill through small thin hardened steel wrenches?

I have a couple wrenches that came with my mini air powered die grinder. I want to put a hole into the top so that I can attach a wire or string so I don't lose them. I used a punch to put a dimple ...
Fresh Codemonger's user avatar