Planer Woodwork Work shop

Side Planer

Planes the sides of each plank so that they have an oval shape and fit together to form a drittel/barrel.
Manufactured by Osbyverken, Sweden, in the 1930s.
The machine has a large torque and slowly starts running, after two minutes it reached operating speed.

Maximum sound level: 105 dB, measured from 2 meters.
The background sound from the belt drive is 76 dB.

Knobesholms barrel works
During the late 1800s butter became an important export commodity. The bulk of the exports went to England. The butter was transported in so-called drittlar/barrels.

A barrel, cask, or tun is a hollow cylindrical container, traditionally made of wooden staves bound by wooden or metal hoops. A drittel is a barrel-shaped container made of beech with specific dimensions, adapted for the UK market. A drittel is 1/3 barrel, German drittel, third. A drittel butter is equivalent in weight measure about 50 kg or an English hundredweight, about 50.8 kg.

Knobesholms barrel works was started in late 1800s by a landowner. The factory manufactured drittlar/barrels to dairies in the area. The factory was destroyed by fire but rebuilt in 1905. The factory was initially water-powered but was electrified during the beginning of 20th century. The drive belts were below ground which was considered very modern. Knobesholms barrel works was closed in the 1950s and was taken over by the local historical society in the 1970s. The entire machinery is preserved.

Sound recordist: Torsten Nilsson
Photographer: Torsten Nilsson
Video recordist: Torsten Nilsson


45.7 MB
4 min 18 s
2 (Stereo)
Sample rate:
Bit rate:
Bit depth:
44.1 kHz
1412 kb/s
16 bit
105 dB

Recorded on June 9, 2014
Work shop
Knobesholm, SWEDEN
Creative Commons License