Frame saw

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The frame saw is a hand saw for machining wood . Like the similar hacksaw , it belongs to the stretch saws or clamped saws .

construction

Frame saw with its individual parts

The parts of the frame saw are:

The saw blade is connected to the handles at both ends by natural rods or screw rods. These are rotatably mounted in the arms. The connection between the bridge and arms with pegs or metal springs is often reinforced by glued-on supports. Instead of a toggle and cord, a metal wire with a threaded bolt, washer and wing nut is possible. The tension required for working is achieved by twisting the cord with the help of the toggle.

Executions

Frame saws are available in different sizes for different tasks:

Chittersaws
are used for rough work when cutting boards, square or round timber and for cutting firewood. The teeth are on pull and push with a medium-sized tooth pitch.
Fist saws (also locating , dividing or tensioning saws )
have a wide tooth pitch on collision with further twist for a high cutting performance while splitting and trimming of lumber .
Slotting saws
have wider saw blades for good guidance to cleanly cut connections such as slots and tenons. The middle tooth pitch is butted.
Step-down saws
are smaller with a fine tooth pitch, they are slightly set and produce a fine, clean cut even across the wood fiber. They are used to cut connections such as prongs and swallows and set tenons.
Tail saws
are the smallest frame saws with narrow saw blades for cutting round and curved shapes. The saw blade can be removed so that you can work in closed surfaces. The tooth pitch is fine and weakly butted.

Working techniques and use

Working with a frame saw, tensioned with a wing nut

Since the handles are rotatably mounted in the arms, the saw blade can be set up in relation to the frame to suit the work step. When cutting connections, the blade is turned slightly out of the frame level in order to be able to see the crack on the clamped workpiece. The saw is guided with one hand on one of the arms. When fisting , trimming boards or planks, the saw blade is at almost 90 ° to the frame. The hands grip the horn and bridge and guide the saw from top to bottom. This means that long stretches can be cut without hitting the frame.

Thanks to the use of woodworking machines , frame saws are almost exclusively used today for training in training workshops, in order to give the trainee a feel for how to use a saw.

  • Frame saw with tension cord and toggle

  • Tail saw, cord tensioned

Web links

Commons : Frame saws  - collection of images, videos and audio files

Individual evidence

  1. ↑ a b Wolfgang Nutsch and others; HOLZTECHNIK Fachkunde , 22nd edition, Verlag Europa-Lehrmittel, Haan – Gruiten 2010, page 186, ISBN 978-3-8085-4045-9
  2. ↑ North German Carpenter Guild Association (publisher): Book of the carpenter A manual for the carpenter's apprentice; Alfred Georgi, Deutscher Handwerksverlag, Hanover 1929, pages 46-48.
  3. ↑ a b supplement The young carpenter in the German construction and furniture joiner issue 9, September 1967, ( online at holzwerken.de )