Miter Saws

A miter saw will crosscut long stock, cut picture frame molding, fit crown molding and quickly cut multiple boards to the same length. They are fast and cut angles with repeatable accuracy. The miter saw has replaced the radial arm saw in many woodworking shops today.

The diameter of the blade determines the size of the saw, 8", 10", 12" and 14" models are readily available.

Compound Miter Saw

A compound miter saw can be adjusted to cut angles both vertically and horizontally. Most 10" saws will crosscut 5 1/2" wide material.


Sliding Compound Miter Saw

The sliding models allow for a greater width of board to be cut. Most 10" saws will crosscut 12" wide material. An added feature on some models is dual bevel capability allowing the blade to tilt left and right.

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Extending Miter Saw Cut

To extend the length of a fixed miter saw cut lay a 1 1/2" thick board on the base under the material to be cut, this will extend the cut on a Delta compound saw by 1".

Up to 24" material can be cut using a sliding model. Make the cut as far as possible (aprox.12"), then unplug the saw. Turn the board over so kerf is facing you, bring blade back and position it in the kerf, clamp material to base, return blade to normal position, plug in the saw and make the second cut.

Trimming Just a Hair

Sometimes you have to cut a board just a little bit shorter, easiest way to do this is to lower the blade all the way down without turning the saw on, push the board against the blade, hold it in that position, raise the blade and make a cut, about 1/64 to 1/32 of an inch will be removed.

Fitting Miters

Two important factors come into play getting miters to fit when making boxes or picture frames.

1. The miters must be cut at exactly 45 degrees.

A square 90 degree corner can be made with any combination of angles that total 90 but only two 45 degree cuts will make a perfect fit.

miters


Figure A shows two perfect 45 degree cuts, the edges of the two sides also line up perfectly.

Figure B shows two different angles that form a perfect 90 degree square corner but the edges of the two boards do not line up on the inside.

2. The two opposite sides must be exactly the same length.

square

The two opposite sides A and B are different lengths, all the angles are perfect 45 degtee cuts, side C has to be tilted in, as shown in red, to meet side A which results in gaps between both A -C and C-D.

Note: Line B is shown as an exagerated length to illustrate the problem.

    1. Use only cross-cutting blades with a negative hook angle.
    2. Keep hands out of path of blade.
    3. Allow motor to come up to full speed before starting cut.
    4. Make sure all clamp handles are tight, even if table is positioned in a stop.
    5. Use proper size blade and type.
    6. Never apply lubricants to the blade when it is running.
    7. Replace cracked or damaged blades immediately.
    8. Never reach around or behind saw blade.
    9. Make sure blade is not contacting work piece before switch is turned on.
    10. After completing cut release power switch and wait for blade to stop before returning saw to raised position.
    11. Do not remove jammed or cut-off pieces before blade has stopped.
    12. Properly support long pieces.
    13. Unplug machine before changing blade or making adjustments or repairs.
    14. Always position materia being cut tight against fence.

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