A needlegun scaler, needle scaler, or needle-gun is a tool used to remove rust, mill scale, and old paint from metal surfaces.[2] The tool is used in metalwork applications as diverse as home repair, automotive repair, and shipboard preservation.[3][4][5]
A US Navy dockyard worker operates a needlegun while wearing vision, hearing, and respiratory protection.A US Navy Seaman uses a needlegun to remove old paint and corrosion aboard USS Kitty Hawk.[1]
A needle gun has a set of very fine chisels known as needles.[3] The tool forces these needles against a work surface at variable speeds up to around 5,000 times per minute.[3][2] Different models offer choices of number of needles, operating speed, and power levels.[3] Many models use compressed air, although electrical needle-guns do exist.[3][6]
In a pneumatic unit, compressed air forces a piston forwards and backwards.[3] This movement causes the needles to move back and forth against the work surface.[3]
The needle gun has advantages over other scaling tools. Its main advantage is that the needles automatically adjust themselves to contours, making the tool a good choice for cleaning irregular surfaces.[2] A needle gun can clean an area to bare metal in seconds, and compares well to other scaling tools in terms of accuracy and precision.[3]
It is recommended that before needlegunning, a surface should be prepared by removing oil, grease, dirt, chemicals and water-soluble contaminants.[5] This can be done with solvents or with a combination of detergent and fresh water.[5] Then, the needle gun is used to remove rust, loose scale, and paint, leaving bare metal.[5] It is used most effectively by holding it at a 45° angle to the work surface.[5] It is recommended that an area no larger than 6 to 8 inches (150 to 200 mm) be cleared at once.[5] Two to three passes over an area is generally sufficient to clean it.[5] Then the process is repeated until the desired area is completed.[5]
Prior to painting, it is desirable to feather any edges between metal and old paint.[5] It is also important to check the surface for oil deposited during chipping, and if necessary, clean the area with solvents.[5] Since bare metal surfaces will flash rust soon after exposure to the atmosphere, paint should be applied as soon as possible after chipping.[5] If flash rusting occurs prior to coating, further chipping, cleaning and sanding may be necessary.[5]
Personal protective equipment (PPE)edit
Because the power tool is noisy and can produce flying chips of debris as well as fine dust, PPE to protect vision, hearing, and breathing are recommended by safety regulators and tool manufacturers.[7][8]
Miller, Jason (2008-01-30). "Needle Scaler and Debris Removal". Free Online Library. Retrieved 2008-04-05.
Naval Sea Systems Command (NAVSEA) (2008). "Chapter 7: Submarine Forces Afloat Painting and Preservation Guidelines for Non-Nuclear Spaces and Components". Contracted Ship Maintenance. Joint Fleet Maintenance Manual - Rev A Change 7. Vol. VI. United States Navy.—CHAP 7 LINK NO LONGER WORKS
Naval Education and Training Command (NETC) (2003) [1996]. "Chapter 11: Painting". NAVEDTRA 14343: Boatswain's Mate(PDF). Nonresident Training Manuals. Pensacola, Florida: United States Navy. Retrieved 2008-04-05.
. Eye on the Fleet Photo Gallery. Navy NewsStand. United States Navy. 2006-03-23. Archived from the original on 12 April 2006. Retrieved 9 March 2021.
Park, Sharon (1984). . Preservation Briefs. Government Publishing Office. Archived from the original on 2008-04-15. Retrieved 2008-04-05.
Nitto Kohki (2008). . nittokohki.com. Nitto Kohki USA. Archived from the original on 2008-06-15. Retrieved 2008-04-05.
External linksedit
Battleship Texas Restoration Manual
April 13, 2024
needlegun, scaler, needlegun, scaler, needle, scaler, needle, tool, used, remove, rust, mill, scale, paint, from, metal, surfaces, tool, used, metalwork, applications, diverse, home, repair, automotive, repair, shipboard, preservation, navy, dockyard, worker, . A needlegun scaler needle scaler or needle gun is a tool used to remove rust mill scale and old paint from metal surfaces 2 The tool is used in metalwork applications as diverse as home repair automotive repair and shipboard preservation 3 4 5 A US Navy dockyard worker operates a needlegun while wearing vision hearing and respiratory protection A US Navy Seaman uses a needlegun to remove old paint and corrosion aboard USS Kitty Hawk 1 Contents 1 Operation and use 2 Personal protective equipment PPE 3 See also 4 References 5 General references 6 External linksOperation and use editA needle gun has a set of very fine chisels known as needles 3 The tool forces these needles against a work surface at variable speeds up to around 5 000 times per minute 3 2 Different models offer choices of number of needles operating speed and power levels 3 Many models use compressed air although electrical needle guns do exist 3 6 In a pneumatic unit compressed air forces a piston forwards and backwards 3 This movement causes the needles to move back and forth against the work surface 3 The needle gun has advantages over other scaling tools Its main advantage is that the needles automatically adjust themselves to contours making the tool a good choice for cleaning irregular surfaces 2 A needle gun can clean an area to bare metal in seconds and compares well to other scaling tools in terms of accuracy and precision 3 It is recommended that before needlegunning a surface should be prepared by removing oil grease dirt chemicals and water soluble contaminants 5 This can be done with solvents or with a combination of detergent and fresh water 5 Then the needle gun is used to remove rust loose scale and paint leaving bare metal 5 It is used most effectively by holding it at a 45 angle to the work surface 5 It is recommended that an area no larger than 6 to 8 inches 150 to 200 mm be cleared at once 5 Two to three passes over an area is generally sufficient to clean it 5 Then the process is repeated until the desired area is completed 5 Prior to painting it is desirable to feather any edges between metal and old paint 5 It is also important to check the surface for oil deposited during chipping and if necessary clean the area with solvents 5 Since bare metal surfaces will flash rust soon after exposure to the atmosphere paint should be applied as soon as possible after chipping 5 If flash rusting occurs prior to coating further chipping cleaning and sanding may be necessary 5 Personal protective equipment PPE editBecause the power tool is noisy and can produce flying chips of debris as well as fine dust PPE to protect vision hearing and breathing are recommended by safety regulators and tool manufacturers 7 8 See also editAbrasive blasting Corrosion Wire brushReferences edit U S Navy 2006 a b c NETC 2003 p 11 10 a b c d e f g h Miller 2008 Park 1984 a b c d e f g h i j k l NAVSEA 2008 Nitto Kohki 2008 Shipyard Employment eTool Occupational Safety and Health Administration US Department of Labor Retrieved 2023 07 22 SC28 Needle Scaler Manual PDF SASE SASE Company Inc Retrieved 2023 07 22 General references editMiller Jason 2008 01 30 Needle Scaler and Debris Removal Free Online Library Retrieved 2008 04 05 Naval Sea Systems Command NAVSEA 2008 Chapter 7 Submarine Forces Afloat Painting and Preservation Guidelines for Non Nuclear Spaces and Components Contracted Ship Maintenance Joint Fleet Maintenance Manual Rev A Change 7 Vol VI United States Navy CHAP 7 LINK NO LONGER WORKS Naval Education and Training Command NETC 2003 1996 Chapter 11 Painting NAVEDTRA 14343 Boatswain s Mate PDF Nonresident Training Manuals Pensacola Florida United States Navy Retrieved 2008 04 05 060323 N 3946H 042 jpg Eye on the Fleet Photo Gallery Navy NewsStand United States Navy 2006 03 23 Archived from the original on 12 April 2006 Retrieved 9 March 2021 Park Sharon 1984 13 The Repair and Thermal Upgrading of Historic Steel Windows Preservation Briefs Government Publishing Office Archived from the original on 2008 04 15 Retrieved 2008 04 05 Nitto Kohki 2008 EJC 32A Electric Needle Scaler nittokohki com Nitto Kohki USA Archived from the original on 2008 06 15 Retrieved 2008 04 05 External links editBattleship Texas Restoration Manual Retrieved from https en wikipedia org w index php title Needlegun scaler amp oldid 1204027792, wikipedia, wiki, book, books, library,
