Clamps for a first shop: which ones, and how many

I do not own a clamp worth naming. I have not glued up a panel. This is what I read before buying the first ones, so I buy for a project and not for a wall.

The short answer

Medium. Four Fine Woodworking pages, two of them partly paywalled, plus Woodsmith and Popular Woodworking. They agree on what each clamp is for. None gives a beginner a number.

• Bar clamps are the core. Jeff Miller calls them the shop workhorse, for panels, carcases and chairs.¹ Woodsmith calls F-style bar clamps the foundation of almost any shop.²
• Pipe clamps are the cheap way to get length. The heads fit ordinary black iron pipe, and a coupler adds reach.³ Megan Fitzpatrick says use 3/4 in pipe, because 1/2 in is not rigid enough for big work.⁴
• Parallel jaw clamps sit flat and keep parts square. They are Fitzpatrick’s workhorse.⁵ They were also the weakest squeeze in one Fine Woodworking measurement.⁶
• One-handed and spring clamps mostly hold things. Fitzpatrick uses one-handed clamps to keep parts in place while a stronger clamp goes on.⁷

How many: buy for the glue-up in front of you. Fine Woodworking shows how to count it, further down.

What the experts say

Fitzpatrick lists her clamps in the order she uses them. Parallel jaw clamps, often called K-body, come first. They sit flat for panels, and she owns twelve in one length. Old iron bar clamps give more pressure but are heavy. Pipe clamps are inexpensive, heavy, and have small jaws. Raw iron can stain oak, so she suggests pads. F-style clamps mostly hold work to her bench. Many spring clamps, she finds, are hard to work with one hand, and the easy ones grip only a little.⁸

She also says she builds large pieces, so your needs may differ. That sentence matters for a first shop.

Fine Woodworking’s editors measured what each clamp type delivered, with a jig and bathroom scales. On average, the parallel jaw clamp gave 370 lb, a Quick-Grip 470 lb, an aluminum bar clamp 680 lb, a 3/4 in pipe clamp 1,050 lb and an I-beam bar clamp 1,350 lb. The person turning the handle changed the result a lot.⁹

Tim Albers tested parallel clamps from six makers. In the part I could read without a membership, the case for them is not pressure. Pipe and I-beam clamps, he says, already have more than enough. It is big jaws that dent the work less, and jaws square to the bar so parts do not slide. He also found some jaws slide down too easily when the clamp is held upright.¹⁰

David Thiel’s Popular Woodworking review dropped Jet’s parallel clamps from bench height. The plastic scuffed and did not crack.¹¹

What owners report

I did not open an owner thread I would quote. Pipe versus parallel debates showed up as search snippets only, so they are not sources here. Under the Fine Woodworking force piece, a reader says a video showed lower pressure works on well-prepared edges. That is a comment, not a test.

Where they disagree

“You can never have too many clamps.” Miller opens with it and calls it true. Then he says buy for the main work you do, on a finite budget.¹²

Fitzpatrick adds the catch: you can have too many useless ones.¹³ Paul Sellers is often quoted against the saying. His page did not load for me, so I am not putting words in his mouth.

Pressure is the other split. Fitzpatrick’s workhorse is the parallel clamp. The measurement put it last, behind even the Quick-Grip.¹⁴

Albers says force is not why you buy one.¹⁵ Both can be true. On aluminum bar clamps, Woodsmith likes the lighter weight.¹⁶ Fitzpatrick says they bend easily.¹⁷

How many, for a real project

Fine Woodworking’s method: find the area of one glue surface, multiply by the pressure that wood wants, then divide by what one clamp gives. Their flatsawn pine example needed three 3/4 in pipe clamps. The same area in quartersawn maple needed nine. For two red oak boards 36 in long, they estimated about nine heavy bar clamps, a dozen pipe clamps or 26 quick-grip clamps, and said mixing types is fine.¹⁸

So the count comes from the wood and the joint, not from a list.

My take

My first glue-up will be the cutting board. That points me at a few long clamps that really squeeze. Pipe clamps if the budget is thin, with pads against the stain. Parallel clamps are the flat, square upgrade I would add when a panel or a box asks for it. A couple of one-handed clamps for holding parts. Spring clamps when a jig needs one.

How long the clamps stay on is the glue’s call, on the bottle and in the glue note. Something solid to clamp against is the workbench note.

The photo is a glue-up from Wikimedia Commons. It is not my bench and not a pick.