What is it? CCXX

[Kenneth]

Ooops... I had not seen that others had offered this one already,

[R.H.]

That's a good idea, blogger has a feature in which you can label each post, then by clicking on the label, all posts in that category can be seen. I don't think there is a way to do this with individual photos, but for now maybe I'll try several different labels, including "best", "science", and "gun powder/explosives". Not sure if I'll have time to start this weekend or not, but hopefully I'll make some progress in the next couple weeks.

Rob

[John Martin]

For removing broken wood screws, as others have said. CCW because, as with a LH drill bit, that gives you two chances to remove a broken screw. If the teeth catch on the screw and back it out, so much the better. If not, they will remove a plug of wood with the screw in it.

John Martin