Corner clamps hold two boards at exactly 90 degrees while you drill, glue or screw, so boxes, drawers, cabinets and frames go together square without a second pair of hands. This collection holds right angle corner clamps and clamp squares from Kreg, Milescraft and Pony Jorgensen for woodworkers, cabinet makers and anyone assembling carcasses.
Choosing a corner clamp
- Clamp or square. A true corner clamp like the Kreg Automax 90 Degree Corner Clamp KHCCC or Pony Jorgensen 90 Degree Corner Clamp pulls both pieces tight. Clamp squares such as the MilesCraft 8 inch Clamp Squares 4011 are rigid brackets you fix with your own clamps.
- Workpiece size. The MilesCraft 4 inch Clamp Squares Set of 2 4010 suits small boxes and drawers. The 8 inch squares handle cabinet sides and shelving.
- Pocket-hole work. The Kreg Automax adjusts itself to the board thickness, which saves time on pocket-hole joints. The MilesCraft Pocket Clamp 4004 holds the joint while the screw goes in.
- How many you need. A box has four corners. The MilesCraft Square Clamp Kit 4012 and MilesCraft 90 deg Corner Clamp 4005 let you build up a set.
Corner clamps for wood: how to use them
Dry-fit the two boards and check for square with a try square before you commit. Fit the corner clamp or clamp square so it sits flat on both faces, tighten, then drill and drive or apply glue. Leave the clamps on until the glue grabs. For a cabinet, clamp two opposite corners first, measure the diagonals, and adjust before fixing the rest. Clamp squares also work as a third hand when you are screwing a shelf into a side panel on your own.
These clamps are in stock at our Claremont, Cape Town shop and ship nationwide by courier. Our staff assemble cabinets with these clamps daily and can advise. See the full Kreg tools range, speed squares and mitre squares.
