An investigation of fatigue and fretting in a dovetail joint

A dovetail — more correctly, a cramp seam — is the zig-zag brassy-yellow line running around the base and up the sides of an antique copper pot. Like a good tailor, a skilled coppersmith makes nice flat seams that are tight and strong, but these are seams that can survive for centuries. The simplest and best explanation of dovetailing with pictures! Sure, from the outside, a cramp seam looks somewhat like a dovetail joint, but in wood the notches lock in to each together like puzzle pieces. In a cramp seam, the notches called crenellations , like the top of a medieval castle wall on each piece of copper slide over each other and overlap along the entire length of the seam and are pounded — cramped — together until they fuse into a single layer. Look at the top edge of the cramp seam below — that roughened area along the edge of the rim shows where two layers of copper are overlapped and cramped together. The yellow stuff is a brass alloy. After the copper layers are cramped, molten brass is dripped on the cracks and smoothed over like caulk to help seal up and strengthen the seam, a process called brazing.

How to Identify Furniture of the 1800s by Its Dovetailing

My first experience with dovetails involved building a drawer. This is a pretty common introduction for most woodworkers. But when it comes to uses for dovetail joinery, drawer construction is really just one of many. Another very important traditional use for dovetails was for solid-wood case construction.

Specimens designed to reproduce the state of stress of the dovetail joint between blade and disk in a typical gas-turbine configuration have been tested in.

An optional upgrade in some cabinets we were ordering prompted a call to my Dad. Hold your hands up in front of you, palms facing you, he instructed. As for whether I want them, Dad explained that such joints have excellent staying power and are highly stable and not easily pulled apart. Nowadays, computerized machines are used to make dovetail joints. But when Dad was in college it was seen as a critical skill to be able to plan, measure, cut and assemble a dovetail drawer manually.

He and a partner were sent to opposite sides of the shop with their measurements, made their cuts independently and then came together hoping their joint would perfectly interlock. It took much back and forth, large and small adjustments and multiple attempts before the corner was effectively joined. How many young men and women are hoping to find the partner that will be their perfect compliment: that will make them complete in the way one end of a dovetail drawer completes the corner of the other end?

US435759A – Dovetail joint – Google Patents

The dovetail joint is one of the most common in furniture making, and it is fairly easy to distinguish between the hand carved and machine made joints. This type of joinery is used for its strength and durability. As a general rule, in the United States, prior to the Civil War, all dovetail joints were constructed by hand using chisels and saws.

Weeks On Chart. Invalid date. Invalid date. Peak Date. Peak Position. Weeks On Chart. 0 of 1. Level On The Inside. Dovetail Joint. Peaked at #33 on

Woodworkers who prefer to make dovetail joints by machine have a new option —Woodcraft has added the WoodRiver Deluxe Dovetail Jig to its line of router accessories. Dovetail joints are a mark of craftsmanship that sets a project apart. However, precise alignment of the pins and mating tails is the key to beautiful dovetail joint construction. Half-blind dovetail joints are not visible from the front end. Tails rest in sockets in the ends of the board that will be the front board in what is being built, often drawers.

The finger-like interlocking parts of through dovetails are visible from all outside surfaces. Through dovetails are used to join corners of frames, boxes, cabinets and more. This dovetail jig has a rigid steel body with molded resin end caps that feature accessory storage. Tubular steel clamping bars hold the workpiece in position while a CNC-machined steel template guides your router to make beautiful dovetail joints. According to Collins, the new WoodRiver Deluxe Dovetail Jig makes it a simple process to align the dovetail pins for center, align the tails to the pins, and then rout both sides of the half-blind dovetail joint at the same time for a precise match every time.

Also, knobs rather than permanent fasteners are used for switching templates, which makes it easier to move from one template to another.

What is a Dovetail Joint on Antique Furniture?

When you want to refinish old wooden furniture, the best place to look is the family storeroom: Check the attic, basement, garage, or wherever unwanted furniture has collected. You may also discover a real antique or two — pieces handed down through the family for generations. Other good sources are secondhand stores, household auctions, and garage sales. With furniture, as with anything else, one person’s junk is another another’s treasure. Antique stores are a good place to find furniture to refinish, but expect to pay for these pieces.

The Complete Dovetail: Handmade Furniture’s Signature Joint [Kirby, Ian J] on In this date and age, you can get better information from YouTube. Rather.

The Silver Salon Forums are open to anyone with an interest in silver and a willingness to share. Know little or nothing about silver? Don’t worry! Anyone with a genuine desire to explore the subject of silver and related metal crafts is welcome. This is the only metal forum I know of that might be of help. Using the “Search” engine did find another thread talking about copper with dovetail seams but no one ventured any info.

I have found conflicting info online on this and a similar copper teakettle – one dates it c and another s. I emailed the dealer asking specific questions on size, why Dutch as country of origin, and why The dealer wrote back giving only the specific measurements and no info why called Dutch and a date. Another antique site had a copper teakettle with identical spout, dovetail seams, brass solder, round cover but a different round-shaped body.

Superbly hand hammered with hand-cut dovetailing and soldering. Fine honeycomb hand hammering texture on lid and body. Wonderful, rich patina.

How to Handcut Dovetails

Skip to primary content. Skip to secondary content. Dovetail joint dating furniture. Dating furniture by drawer pulls One pin was made by the majority of antique furniture, i miss read some of quality furniture dovetail furniture construction vs. Aug 7, not.

Dovetail Joints: What they can tell us about our Antique Furniture. The bottom of the lowest drawer will typically darken more dovetail the bottom of can upper.

This post was contributed by a community member. The views expressed here are the author’s own. An important thing to learn that will help determine if a piece of furniture is an older “antique” is if a dovetail drawer joint was cut by hand or by a machine. It’s fairly easy to tell the difference with a quick look at them. A machine cut dovetail drawer has evenly spaced pins and tails, all looking the same.

The earliest machine cut dovetail joints were used during the later part of the 19th century and are common on much of today’s furniture. Hand cut joints were commonly used in both European and early American made furniture and date back to the early Egyptian times. When you see this hand cut type of dovetail on a drawer or cabinet case, you can be pretty sure that along with “aged” looking wood that the item was made prior to Keep this in mind when looking for real “period” antique furniture.

The views expressed in this post are the author’s own. Want to post on Patch? Register for a user account. Patch is a space for neighborhood news.

The Dovetail Joint: 1 Easy Way to Tell a Reproduction from a True Antique

You have two choices while restoring old cane furniture: giving it a polished look while retaining the natural color or painting it in a different color to complement the surroundings. Defensible Security Architecture course. This course dovetails nicely.

Feb 16, – Furniture | Dating | Dovetail | For thousands of years, a dovetail joint was created by a skilled cabinetmaker using small, precision saws and wood.

Specimens designed to reproduce the state of stress of the dovetail joint between blade and disk in a typical gas-turbine configuration have been tested in a kN capacity biaxial fatigue machine. A design parameter that combines fretting damage and peak stress is proposed as a basis for the life assessment of the joints. This is a preview of subscription content, log in to check access. Rent this article via DeepDyve.

Boddington, P. ASME Int. Frost, N. Press Waterhouse, R. Download references. Reprints and Permissions. Ruiz, C. An investigation of fatigue and fretting in a dovetail joint.

Antique Furniture : How to Evaluate Antique Furniture