Woodturning

Woodturning is a -machined manufacturing process for wood, rare for horn, ivory, amber, Alabaster, serpentinite, plexiglass and other plastics. The turner calls this method in general turning. Turning is manually on a lathe or automatically on a lathe, whereby the workpiece in the horizontal plane centered rotates about its axis.

Technology in hand rotation range

Long wood turning

In this rotation method, the workpiece either between the tips ( driver on the headstock and tailstock tailstock ) is clamped or cantilevered on the headstock. The workpiece rotates along the fiber direction. The rotary iron is placed on the palm rest and manually guided against the workpiece that a deliberate cutting action arises. With this technique manufactured articles are for example:

• Stair rods
• Newel post
• Various columns
• Cans
• Buttons
• Writing Instruments

For this technique also includes a hollow turning, turning over head and the Gewindestrählen.

Cross wood turning

In this rotation process, the workpiece is fixed on one side on the spindle head. The workpiece rotates across the fiber direction. The rotary iron is placed on the palm rest and manually guided against the workpiece that a deliberate cutting action arises. With this technique manufactured articles are for example:

• Large rings
• Handrail Screw
• Doses

Rotate tires

In this rotation process, the workpiece is fixed on one side on the spindle head. The workpiece rotates along the fiber direction. The rotary iron is placed on the palm rest and manually guided against the workpiece that a deliberate cutting action arises. The workpieces from mostly coniferous wood are completely soaked. By means of a very long moving iron are rotated very finely contoured rings, which present after splitting their shape - mostly animals or accessories for toys and figures.

Rotating spiral columns

Although it is primarily here with the actual shooting is a combination of cutting, chiselling, shredding and grinding, heard the sinuous column traditionally one of the products of the wood turner. In most cases, the basic shape is rotated in preparing long timber. The desired windings are recorded and cut by hand saw to the intended depth. The rough shape is then pre- dodging with a chisel and finally reacted with various rasps and abrasives to the desired shape and surface quality. With this technique, products are produced such as

• Stair rungs
• Chair and table legs
• Bedpost

Ovalturning

In this relatively rare turning process, the workpiece is one side of the factory the so-called oval or oval turning and this fixed to the headstock. The oval turning gives the mostly wooden cross workpiece in one revolution a kind of cross pendulum motion. The Achsdifferenz of the oval can be adjusted. To get an accurate Oval, the tool during the turning process can only cut exactly in a constant amount to the rotation axis. With this technique, products are produced such as

• Doses
• Picture Frames

Passignano turning

This is divided into longitudinal and transverse Passignano turning and mixed forms. This extremely rare process during longitudinal turning Passignano by a completely rebuilt lathe spindle by the positive control in the longitudinal direction is moved back and forth while the tool cuts at a fixed point or scrapes. The cross Passig rotating the spindle or the entire headstock is brought into a transverse oscillating motion inevitable. In both methods templates and cam plates are used to determine the amount of deflection. All parts should be made ​​of solid, homogeneous material. Since the workpiece is usually performed in support, one can hardly speak of the hand turning. Only in simple Passignano filming the tool can be performed freely. With this technique, products are produced such as

• Stair rungs
• Table legs
• Doses

Thread strählen (also chasing )

This method is rarely used in the professional field, but partially taught in subject teaching. With indoor and Außenstrählern ( Schraubstähle ) can be internal and external threads on workpieces produced. The slower the lathe running, the better a thread to be cut. The tool is applied with a rotating workpiece at the base of the desired thread and moved with little pressure forward. The aim is, per revolution to cut a thread. Adjusts the feed rate, the movement is repeated until the desired depth of the thread is reached. This process requires a lot of practice and skill. Be used uniformly grown timbers with high density ( pear, apple tree, plum tree, boxwood, hornbeam etc. ) Likewise, are also horn and bone (bone). The alternative to thread strählen for wood cutting tools are similar to those in metalworking.

With this technique, products are perfected, such as

• Lathe chuck
• Vascular glands
• Whistle

Tools

The main tools of the turner are:

• Tubes = semicircular tools with flat outer ground
• Flat chisels and parting tools = flat, partially double-sided grinding
• Finishing and Hollowers = with very steep cut

The button has been replaced as a measuring instrument by calipers. Other measuring and auxiliary instruments of the spring interior switches and dividers. These, together with the spring exterior buttons and the perfect basic form - the ball - found in guild signs of turning.

When the tools resemble carpenter tools, they are fundamentally different by their quirks and personality. In particular, the length of 40-50 cm and greater strength are for the safe turning of considerable importance.