Expert DIYer April Wilkerson builds an easy circle cutting jig for a router, enabling precise round cuts on wood projects.

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› The personalized gifts on this list go way beyond the monogram (although we like ...

The world's largest shield machine for railway construction, a tunneling device with a diameter of 15.4 meters, excavates its 1,000th ring segment on Sunday to reach 2 kilometers, a milestone in the ...