MechanicalBench electronicsSpecialist reuse

Heat pipe

Also called laptop heatpipe, vapor chamber.

A sealed copper tube that moves heat by boiling a little fluid at one end and condensing at the other. Laptop and GPU coolers. It is not a copper rod you can cut, bend sharply, or drill. The working fluid is small but the vacuum is the whole function.

If you are new to this category

Rods, gears, belts, magnets, screws, and boxes. Printers are the best source of straight steel rod and toothed belts. Screws from a laptop are tiny and specific; a random screw in a laptop hole strips the plastic. Bag them by the machine they came from.

If two parts were meshing or riding together, keep them as a pair. A gear from one toy rarely fits a gear from another.

Inside a hard drive

The two curved blocks on the steel plates are the magnets, and they are the prize. Slide them apart. Do not pry straight up. The flat coil on the arm is a short-travel motor. The platters are not a useful material, and on some drives they are glass.

Sheet metal and glass. Case steel, shattered platters, lamp glass, and magnet chips cut deeper than they look.

Specification. The right-hand column is what is typical. The label on the part in your hand wins if they disagree.
What to look for	Usual figure
Orientation	Many still work flat. A sharp kink kills them.
Attachment	The cold plate is often soldered. Reusing the whole assembly on the original chip is realistic; redesigning the mount is not.

Volts are electrical pressure, amps are how much current is flowing, and ohms are how hard the part resists that flow. A higher voltage than the part was built for is how salvage parts die on the bench. If a cell in the table says “read the stamp”, that stamp is the whole specification.

What people actually use it for

Cooling the same class of chip
Moving heat to a remote sink if you can clamp without crushing

Leave this one when

Any kink, any cut, any plan to saw it open to 'see the wick'.

Buying a new one is the better idea when

A heatsink sized for the watts you have, if you cannot keep this pipe intact.

How to tell if this one still works

Warm one end with a finger and feel the other. A dead pipe is just a slow copper bar; the live one equalizes faster than you expect. This is a comparison, not a spec.

Tools you will want: Patience.

Where people actually find it

2 notes, most useful first. “Leave it” means the part is in that machine and you should not take it: it is dangerous, worn out, or only useful if you already know that exact repair.

Harvest at a glance
From	Call	How many	How often	Where it sits
Laptop	Worth it	1	usually	From CPU to the fin stack.
Desktop PC	Bonus	1	sometimes	On a discrete graphics card.

Worth pullingLaptop1 · usually
In this particular machine
A sealed copper pipe. Keep it straight.
Where to look
From CPU to the fin stack.
How to get it out
Release the screws in the numbered order so you do not warp the cold plate.
The condition to expect
Dead if kinked.
Bonus, if you are already in thereDesktop PC1 · sometimes
In this particular machine
A sealed copper pipe on the GPU cooler. Do not kink it.
Where to look
On a discrete graphics card.
How to get it out
Take the whole cooler.
The condition to expect
Good if it is not crushed.