Woodworking 90 Degree Corner Clamp for Square Joints

Questions and answers
Woodworking 90 Degree Corner Clamp for Square Joints
Woodworking 90 Degree Corner Clamp for Square Joints
Woodworking 90 Degree Corner Clamp for Square Joints
Woodworking 90 Degree Corner Clamp for Square Joints
Woodworking 90 Degree Corner Clamp for Square Joints
Woodworking 90 Degree Corner Clamp for Square Joints
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About this itemAll characteristics
TypeWoodworking Clamps & Angle Clamps
BodyMatte grey aluminum
ScrewStainless steel threaded rod
HandleOrange-and-black rubber grip
Angle90 degree fixed corner jaws
BaseSlotted holes for mounting
From the seller

Lock two boards at a true 90 degrees and drill or glue with both hands free. A solid aluminum corner clamp with a stainless screw for frames, boxes and cabinets.

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Description

Lock two boards at a true 90 degrees and drill or glue with both hands free. A solid aluminum corner clamp with a stainless screw for frames, boxes and cabinets.

Holds two boards at a perfect 90 degree angle for accurate corner joints

Solves
  • corner joints slipping during glue-up
  • hard to hold frame pieces square while drilling or screwing
  • need for a third hand when assembling boxes or picture frames

Square corners on every joint, without a third hand

Before: boards creep out of square the moment you reach for a driver. After: two boards locked at a true 90 degrees, so you drill and glue with both hands free.

Two jaws, one fixed right angle, zero drift

Clamp jaws opening and closing shown from several angles

Fixed 90-degree jaws

Fixed and adjustable jaw faces set a right angle and keep it. The corner stays square while you drill or drive screws.

Stainless threaded rod and two-tone grip handle up close

Solid aluminum with a stainless screw

An aluminum body and stainless threaded rod give a firm hold in shop use. The orange-and-black soft grip turns easily by hand.

Four demo shots of corner clamping and drilling through a clamped board

Drill straight through the clamped corner

The clamp holds frames, boxes and butt joints, so you can bore pilot holes without a helper. Slotted base holes let you mount it to a bench.

Set the corner, tighten once, let go

  1. 1
    Place the boards

    Bring the two pieces together at the corner.

  2. 2
    Seat the corner

    Push both boards tight into the fixed 90 degree jaws.

  3. 3
    Tighten by hand

    Turn the handle until the joint is snug, then check with a square.

  4. 4
    Drill or glue

    Drive screws or spread glue with both hands free.

From drifting corners to locked ones

The corner that won't stay put

You line up a frame corner, reach for the driver, and the joint slips open. Bar clamps pull the pieces together but don't hold an angle. A framing square checks the corner and then does nothing to keep it. By the time the glue sets, you are sanding, filling or re-cutting.

Lock it once, work with both hands

Seat both boards in the fixed 90 degree jaws and turn the handle until the joint is snug. The corner stays put. Drill the pilot hole, drive the screw or spread the glue, and the joint closes tight the first time.

Pull together is not the same as hold square

This corner clampBar clampFraming square
Holds a fixed 90 degreesYesNoNo
Hands free while drillingYesPartialNo
Pulls pieces togetherYesYesNo
Metal body and screwYesYesPartial
Bench mounting holesYesNoNo

Characteristics

Main
TypeWoodworking Clamps & Angle Clamps
Details
BodyMatte grey aluminum
ScrewStainless steel threaded rod
HandleOrange-and-black rubber grip
Angle90 degree fixed corner jaws
BaseSlotted holes for mounting
SizeCompact

Reviews

Questions and answers

What size stock does this clamp fit?
w
Wanelo · seller

It is a compact clamp, so it suits frame stock, box sides and thin to medium boards. Measure your thickness against the jaw opening before you buy. For heavy stock, use a larger clamp.

Will the aluminum jaws mark walnut or finished wood?
w
Wanelo · seller

Tighten until the joint seats snug and stop. Hard cranking can mark any wood. On finished or soft surfaces, put a scrap of card or thin wood between the jaw and the piece.

How is it different from a plastic corner clamp or a framing square?
w
Wanelo · seller

A framing square only checks the angle. Plastic clamps flex under pressure. This one has a solid aluminum body and a stainless screw that hold a fixed 90 degrees.

Can I mount it to a bench?
w
Wanelo · seller

Yes. The slotted base holes let you fix it to a bench or clamp it down for repeat work.

Is it worth the price over a cheap clamp?
w
Wanelo · seller

One clamp saves the re-cuts and filler that drifting corners cost you. Metal construction means it should serve across many projects rather than one.

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Woodworking 90 Degree Corner Clamp for Square Joints
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