Do not use metal tweezers to handle dies. It is very easy to apply too much pressure and chip dies.

Preferred method used by cleanrooms. These are unfortunately the most expensive as well. on eBay you can pick up a pair for $15. Typically they have a metal body and a (screwed on) carbon fiber tip.

WARNING: these are epoxy / resin filled. Do not expect them to be resistant to acids and be wary of acetone. (as I realized the hard way…)

Advantages

• Very gentle on die
• Durable

Disadvantages:

• Expensive
• Less chemical resistant than some plastic tweezers

These tend to be the best compromise between price and performance. They do vary though as to their chemical resistance and cleanliness.

“Antistatic type” tend to have better chemical resistance

Advantages

• Low cost
• Moderate chemical resistance (depends on brand)

Disadvantages

• Vary considerably
• Brittle: easy to snap tip off, difficult to use after that. I have also had problems with some coming compressed and trying to splay them to make them springy has resulted in them snapping in half.

These are very common on eBay. They come in a few different sizes and sell for something around 2 / 2$. They have a large mixed particle content (glass and ?) which makes them somewhat resistant to acetone. Here is a pair that was in acetone for a short period of time:

It will leave black streaks when wiped after exposure. Additionally it will flake off particulates which is bad for keeping dies clean.

Example models:

• 93307
• 93302: the tip is longer than the 93307 but otherwise identical (other than the number)

93302 tip bottom, 93307 tip top:

I got these as a Jameco antistatic tweezer set.

This seems to have good resistance against acetone. Here is a well used tweezer:

Although its dirty its still in very good shape. Getting it wet with acetone and wiping it doesn't leave a black streak.

Advantages:

• Good chemical resistance
• Soft against dies

Disadvantages:

• More expensive than other brands