home clinic; the do\'s and don\'ts of using portable electric sanders

BERNARD gladounl yml 27,1986 this is a digital version of an article from The Times Print Archive, before it begins its online publication in 1996.
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Portable electric sander can save tedious and tiring time for manual polishing or scraping
Just select and handle the right machine correctly.
Safety is important.
When using any electric sander, always wear goggles to protect your eyes and wear a respirator or safety mask to prevent dust inhalation.
There are three types of portable electric sanders: disc sanders, track Sanders (
Also known as finishing Sanders)
Or bring Sanders.
As the name implies, the disk Sander consists of one or more disks that are round-
A piece of sandpaper in shape.
The grinding disc can be maintained on the surface of the back pad by adhesive or by bolts and large washers through the center.
The disc sander used by most household handyman in its most common form consists of a sand plate mounted on a knife pole
Spindle or rod-
Then put it into the ordinary electric drill.
However, this arrangement is not very effective.
Most electric drills do not turn high.
Sufficient speed for proper sanding, when they are used with the sand plate attachment, it will bring inappropriate strain to the bearing of the drill bit.
The bearing is designed to resist the end thrust, not the side thrust or twist action.
AdvertisementHome disc sanders is only for fairly rough work
For example, Polish peeling paint on wooden tiles or siding outside the house, or Polish
Iron railings, furniture, yard equipment.
Disk Sanders should not be used for furniture, cabinets and doors, or even for most flat wooden decorations inside and outside the house.
They are difficult to control on a flat surface, and have a strong tendency to dig, creating a circular groove or vortex mark on the surface.
When using a disk Sander, only the outer edge of the disk is in contact with the work-
Never try to keep the disk flat on the surface.
Keep the tool so that the disk is always angled to the surface.
In most cases, it is better to only correspond the top edge of the disk to the work, but this may vary depending on the location of the work, the location of the tool relative to the work, and the angle you might be working on.
The rule is to try to touch the surface so that the disk will stay away from you and thus throw away sand and dust from your face.
Without pressing hard, gently touch the edge of the grinding disc to the surface.
Keep the disk moving back and forth by \"winding\" it, through the area, polished with \"feather\" motion, which will prevent the disk from being dug or shaved.
Never press it on the surface.
If the grind does not remove the material as it should, or if it does not work fast enough and does not work for you, switch to a thicker disc or check it for the second time.
Track Sanders, also known as finishing Sanders, has a flat plate at the bottom, the motor is installed in the shell at the top, and also serves as the main body of the tool.
They are by far the most popular universal electric sander.
They work fairly fast and have never been cut or the surface of March, leaving a very smooth and flat surface.
However, they are slow when used to remove paint or varnish, or when you have to really reshape or remove a measurable surface.
Some models have handles at the top, extending out from the front and back of the shell, while others are designed to make the shell itself a handle.
The latter usually has a smaller square pad instead of the usual rectangular one, which is designed to be held with one hand instead of two.
This type has become more and more popular with professional craftsmen in recent years, as it is suitable for the palm of one hand, so it is often referred to as a \"palm sandwich \".
Compared to the larger sanding machines that use rectangular frosted pads, they are lighter and less tiring to use on vertical or overhead surfaces.
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Track Sanders gets their name from the fact that the grinding pad moves on an ellipse or track path.
Some are designed for fine machining to move the liner back and forth in a straight line, but many models that provide a straight line
There are also switches or levers for wire sanding, allowing transfer to straight-
Polished line or track.
The track is much faster to Polish, but straight-line (back and forth)
When you move parallel to the grain, the sanding provides the best and smoothest surface.
Many people make the mistake of pushing down hard when using a track Sander or a fine light Sander because they think it will help the machine cut faster.
In fact, pressing hard often has the opposite effect: it causes the motor and pad to slow down and can cause the motor to overheat enough to damage it.
The right technique for advertising is to put enough pressure on the tool to keep the sandpaper firmly in contact with the work at all times.
Stopping the machine regularly and brushing or slapping dust from paper is also helpful.
Belt Sanders cutting speed is fastest, maximum weight
Heavy sand machine.
They use an endless strip of cardboard to travel around two drums or drive wheels --
One at the front end of the machine and the other at the back.
The belts must be installed correctly so that they move in the direction of an arrow engraved on the back.
They have different sizes to fit different-
The most popular size is the machine with two halves to 4 inch wide.
Each machine only accepts the width and length made for it, so make sure you know the size your machine uses before purchasing a new belt.
Like the track Sander, the Sander is only useful on flat and straight sides.
It will take off at a very fast pace, so it has to be handled with care to avoid taking off more material than expected and to avoid accidentally rounding or reshaping the edges and corners.
This is a good machine for removing paint and varnish and a machine for smoothing rough wood.
Handled properly, it can also be used to trim the door edges and styling, great for smoothing or stripping flush doors, garage doors, siding and paneling.
Just be careful not to let the machine tilt or drop when you pass through the edge or end of the panel (
Heavy Machine)
Because even if you don\'t want to do that, it will end or shave.
Due to the way the belt travels, the belt Sanders tends to pull significantly forward when in contact with the surface, so stay firm, two-
Put your hand on the machine at any time.
Don\'t try to make it cut faster
This will only slow down the action and cause the sanding belt to overheat to glue faster. (
The sanding belt is much more expensive than the ordinary sandpaper needed for the track Sander. )
When using a grinder, when the belt is in motion, it is never allowed to stay in a position on the surface.
Due to the speed of the cutting action, it is easy to produce grooves or shallow areas on the surface.
Start the motor while holding the tool from the surface, and then contact it with the work.
When ready to turn off the machine, first pull it arc from the working surface.
Questions about house repairs should be addressed to Bernard Gladstone of The New York Times, 229 West 43d Street, New York. Y. 10036.
This column will answer questions of general interest;
Unpublished letters cannot be answered separately.
A version of this article was printed on page WC11 of the National edition on April 27, 1986, with the title: home clinic;
Precautions for using portable electric sanders.