A finger joint, also known as a comb or box joint, is a wood joint made by cutting complementary rectangular slots in two narrow pieces of wood, which are then glued together.
If you interlock the fingers of your hands together at ninety degrees (hence the name finger joint), you’ll get the idea.
Finger Joint
Finger joints are stronger than mitre joints, butt joints, or even lap joints and are often used when a more ‘rustic’ quality is required!
An alternative name for a finger joint is a box-pin joint.
Finger joints are ideal for box making, as well as household furniture and kitchen cabinets and are suitable for use with natural woods such as pine and mahogany and wood based products, such as plywood and MDF.
Finger joints are really strong when used with a good quality, wood working glue such as PVA. If you lock your fingers together, try forcing them apart and you’ll find it difficult to do. The same principle applies to finger joints in wood boxes.
Polmac (UK) Ltd uses finger joints mainly for larger wooden boxes, where stronger, more durable joints are required.
Polmac Finger Jointing
If done by hand, finger jointing is a slow, laborious process and takes a great deal of time, effort and skill. For this reason, special finger jointing machines are often used.
When cut, the ‘fingers’ should fit together like a glove, without any gaps and the glue will ensure that the joint is virtually indestructible!
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