Questions tagged [screws]

Fasteners with a helical thread along the outside. Uses a twisting motion to install or remove.

Filter by
Sorted by
Tagged with
8
votes
3answers
4k views

Are there specific types of screws I should use for woodworking?

I'm wondering what types of screws I should use for woodworking and what types I shouldn't be using as well. For example, Are deck screws OK? What about a square head vs. Phillips? Does the type of ...
13
votes
4answers
10k views

How can you make a regular screw into a self tapping screw?

Assuming that it is even possible, how can you take a screw with a normal thread and point and make it into a pseudo self tapping screw? Screw on the right (assuming its uniform all the way around) ...
5
votes
1answer
1k views

What joining methods would be best for the legs and other areas of a height adjustable desk?

I am working on building my first piece of furniture. I decided to go a bit big and went with a height adjustable desk. I have the linear actuators and the electronics figured out. Today I purchased ...
7
votes
3answers
3k views

Endgrain screw withdrawal force

The engineering toolbox has a screw withdrawal strength calculator but it assumes the screws are perpendicular to the grain. I could not find a calculator for screws installed parallel to the grain, ...
8
votes
3answers
38k views

What size pilot hole should I drill for for a specific size of screw?

I am trying to install a safe using 8mm coach screws (legislation dictates this is the minimum required size) into Jarrah. What size pilot holes should I drill? Is there a standard reference chart? I ...
14
votes
3answers
2k 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 ...
13
votes
5answers
40k views

What alternatives are there for pocket screws?

So I borrowed a Kreg jig from a friend and was using some scrap 2x4's to work on the Community Project: Lets build a workbench!. Unfortunately I came to an impasse. I went to 3 local hardware stores ...
13
votes
4answers
1k views

How to make proper pilot holes

This is related to the question about Replacing small drill bits without buying new sets (or preventing breaks) but I wanted to expand on this. I think I'm just using cheap bits and much like the OP ...
28
votes
11answers
12k 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 ...
19
votes
2answers
27k views

What are the advantages of countersinking screws?

What are the advantages of drilling a countersink rather than just trying to force the screw head past the plane of the wood? What are situations when you would or would not countersink?
16
votes
6answers
40k views

Joining wood at an angle

To give you an idea of scale, as it give context, I am referring to the roof of an open bird feeder. Currently I make 3 holes that I drill perpendicular to where the two pieces meet. Getting a screw ...
11
votes
2answers
302 views

Making fake/pseudo plugs or caps

Gifted amateur working with variety of different woods like pine,oak and something from Indonesia that I haven't typed yet. If one needs to use caps or plugs for recessed screw/nails you would just go ...
9
votes
3answers
15k views

Advice for setting screws in dense wood

The Janka Hardness Test provides a scale for the hardness of woods. Toward the higher end, wood can be particularly difficult to drive screws into and even a pilot hole may not be adequate. Is there a ...
6
votes
1answer
740 views

What is this plywood joining mechanism and hardware for knock-down furniture?

Just came across a plywood joint mechanism, which I found very interesting as new woodworker. Basically I don't know what it is called and can't find any in our local market. I am attaching the photos ...
5
votes
3answers
544 views

Fully threaded screws

It seems to me that fully threaded screws are commonly used to join wood, but I cannot see how any clamping force can be attained. Surely screws with some plain shank should be used so that the thread ...
4
votes
2answers
899 views

Attach fastener into glue joint of two face-glued boards

I'm going to be building a bed for my daughter and my design calls for a larger piece of wood for the legs. I could use a 2x3 or 2x4, but am wondering if I could create the larger piece by gluing two ...
2
votes
2answers
633 views

End grain mitre joints for outside

I'm making bird houses and I have been screwing the joints together. I have been drilling a pilot hole (2mm bit) and using 3mm X 30mm screws. I hung one in my garden and noticed that a couple of ...
1
vote
1answer
196 views

Why do screws usually work well without clearance holes?

Why do screws so often work even without a clearance hole? It seems like in theory, the screw should always push the joint apart (bridging). But in my experience, screws more often seem to tighten the ...