Sanding
From Crankshaft Coalition Wiki
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==Sandpaper== | ==Sandpaper== | ||
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===Power sanders=== | ===Power sanders=== | ||
====Random orbit sanders==== | ====Random orbit sanders==== | ||
| + | Random orbit sanders, known as DA (dual-action) sanders, spin a sanding disc while moving it in an ellipse. This random sanding action helps prevent sanding marks. | ||
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| + | Air sanders can use a lot of air, so compressor choice may be important. | ||
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| + | Prolonged use of orbital sanders can cause a condition known as "Vibration White Finger", or "Hand Arm Vibration Syndrome". For more details, see [[Health and Safety in the Shop or Garage#Vibration protection|Vibration protection]]. | ||
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| + | =====Electric vs. air===== | ||
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| + | =====Manufacturers and suppliers of DA sanders===== | ||
| + | *[http://www.hutchinsmfg.com/ Hutchins Manufacturing] has a variety of highly-reputed DA sanders in the $200-$300 range. | ||
| + | *[http://www.dynabrade.com Dynabrade] | ||
| + | *[[Harbor Freight]] has [http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90288 a 6" air sander] for around $30. | ||
====Finishing sanders==== | ====Finishing sanders==== | ||
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==Wet sanding== | ==Wet sanding== | ||
| − | ==Sanding tips | + | ==Sanding tips== |
*For a smaller sanding block, place a sanding block in a vice and cut it with a hacksaw. | *For a smaller sanding block, place a sanding block in a vice and cut it with a hacksaw. | ||
*To make a sanding block for a specific use such as when a smaller size is needed to access a confined area cut a piece of half inch thick plywood to the correct size. Glue or screw a makeshift handle made from a small block of wood to the top of it. Cut your sandpaper large enough to wrap it around the block and then staple it to the block. You can do this with various sizes of dowel for areas that need a curved surface. | *To make a sanding block for a specific use such as when a smaller size is needed to access a confined area cut a piece of half inch thick plywood to the correct size. Glue or screw a makeshift handle made from a small block of wood to the top of it. Cut your sandpaper large enough to wrap it around the block and then staple it to the block. You can do this with various sizes of dowel for areas that need a curved surface. | ||
*To true a sanding block, put a piece of 180 grit sandpaper on a flat surface (plate steel, aluminum, etc.). Rub the surface of the block over the sandpaper. The flatness of the plate or flat surface will true up the surface of the block. | *To true a sanding block, put a piece of 180 grit sandpaper on a flat surface (plate steel, aluminum, etc.). Rub the surface of the block over the sandpaper. The flatness of the plate or flat surface will true up the surface of the block. | ||
*To make a sanding block for an angle, place body filler in a bag and press it into the angle to make a mold. Or, for an actual sanding "block", place body filler on plastic wrap, press it into the angle, and press a block of wood into the back. When it hardens, it's bonded to the wood. | *To make a sanding block for an angle, place body filler in a bag and press it into the angle to make a mold. Or, for an actual sanding "block", place body filler on plastic wrap, press it into the angle, and press a block of wood into the back. When it hardens, it's bonded to the wood. | ||
| − | *For sanding concave areas, use a piece of rubber hose as a sanding block | + | *For sanding concave areas, use a piece of rubber hose, PVC, or sticky-backed sandpaper wrapped around a scuff pad (scotch-brite) as a sanding block. |
*To make a simple tool for cutting sandpaper, mount a hacksaw blade to a piece of plywood. Draw lines on the plywood for different cut sizes, and label them accordingly. To cut sandpaper, slide it under the blade until it lines up with the proper line. For photos of this tool, see this [http://hotrodders.com/forum/tip-day-42-a-80655.html Hotrodders Bulletin Board discussion]. | *To make a simple tool for cutting sandpaper, mount a hacksaw blade to a piece of plywood. Draw lines on the plywood for different cut sizes, and label them accordingly. To cut sandpaper, slide it under the blade until it lines up with the proper line. For photos of this tool, see this [http://hotrodders.com/forum/tip-day-42-a-80655.html Hotrodders Bulletin Board discussion]. | ||
| + | *To cut sandpaper, fold the paper and use a putty knife to cut the fold, or lay a ruler in the crease, then lay it on a table and pull up. | ||
*Use pieces of sheet metal to size sandpaper: | *Use pieces of sheet metal to size sandpaper: | ||
#Using a stomp shear, or something else that can cut sheet metal straightly, shear a piece of sheet metal in the size of a piece of sandpaper. | #Using a stomp shear, or something else that can cut sheet metal straightly, shear a piece of sheet metal in the size of a piece of sandpaper. | ||
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#After sanding, let a panel or vehicle sit in the sun for a few hours. Then, take it inside, wait for it to cool, and buff it. | #After sanding, let a panel or vehicle sit in the sun for a few hours. Then, take it inside, wait for it to cool, and buff it. | ||
*When calculating sandpaper costs, bear in mind that used sandpaper takes longer to use. To save on labor costs, it may be beneficial to discard sandpaper before it is completely used. | *When calculating sandpaper costs, bear in mind that used sandpaper takes longer to use. To save on labor costs, it may be beneficial to discard sandpaper before it is completely used. | ||
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==References== | ==References== | ||
| − | *http://www.hotrodders.com/forum/does-matter-sanders-163354.html | + | *[http://www.hotrodders.com/forum/does-matter-sanders-163354.html Thread on sanders] in Hotrodders forum. |
| − | *http://en.wikipedia.org/wiki/Random_orbital_sander | + | *[http://en.wikipedia.org/wiki/Random_orbital_sander Random orbital sander] in Wikipedia. |
| − | *http://en.wikipedia.org/wiki/Sandpaper | + | *[http://en.wikipedia.org/wiki/Sandpaper Sandpaper] in Wikipedia. |
[[Category:Body and exterior]] | [[Category:Body and exterior]] | ||
[[Category:Garage and shop]] | [[Category:Garage and shop]] | ||
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