When it comes to cutting crown molding on a sliding compound miter saw, spring angle plays a key part in getting it right. If you don't understand "spring", you need to read this.
Making crown cuts on a sliding compound miter saw is tricky enough as it is, but when spring angle comes into the equation, it's yet another thing that can lead to mistakes and a waste of good wood. You need to know what spring angle your molding has, but first of all you need to know how to choose the right type for your room.
Compound Saw
If you are going to the trouble of cutting your own crown molding, the least you can do is choose the appropriate type for the height of your ceiling, and that is where spring type comes into play. The industry makes three common types -- 38 degrees, 45 degrees and 52 degrees. Basically, the lower the ceiling, the lower the angle to choose. This is because the spring is the angle at which the molding sits away from the wall.
The best angle at which to view molding is face-on. In a room with a lower ceiling, the average person's eye is closer to the molding, so to get a face-on view, the molding has to be angled more steeply, which means that the lower 38 degree spring angle is best. Conversely, for a room with a higher than average ceiling, the crown molding needs to be angled more shallowly because the average viewer will be lower in relation to it. The molding basically needs to point down towards the viewer more, so the higher 52 degree spring is best. For an average ceiling, the normal 45 degree spring will be the optimal choice.
Now, if you have already purchased your molding, and you didn't pay any attention to what spring factor it was, you are going to have a hard time cutting it on your sliding compound miter saw, especially if you intend to cut it flat using a bevel setting on a sliding compound saw. So, it's important to find out what spring your molding has before you start.
A quick way to determine the spring angle is to take a piece of waste wood and make a clean 45 degree miter cut. Now take a piece of the crown molding and press the angled section at the back of the bottom part (the part with most decoration) against the fence of your compound sliding miter saw. The fence is acting as the wall of your room and you are looking at the molding from above, as if it were sticking out from the wall.
Now, drop the 45 degree scrap wood into the gap behind the molding. If it won't fit, you have 38 degree molding; if there's a gap, you have 52 degree molding; and if it fits perfectly, you have 45 degree molding. It's as simple as that.
Christmas Sales Hitachi C12RSH 15 Amp 12-Inch Sliding Compound Miter Saw with Laser 201
Dec 12, 2011 20:03:16
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Christmas Sales Hitachi C12RSH 15 Amp 12-Inch Sliding Compound Miter Saw with Laser Feature
- Fixed slide rail system
- Laser marker for accuracy
- Micro adjust on miter and bevel
- Tall flip fence work support
- Quiet and smooth belt driven motor
Christmas Sales Hitachi C12RSH 15 Amp 12-Inch Sliding Compound Miter Saw with Laser Overview
C12RSH Size: 12" The C10FSH 10'' Sliding Dual Compound Miter saw is equipped with a high fence to support the work piece for stable cutting and a laser marker for precision cuts. Positive stoppers adjust the turn table position for easy miter cutting. The C10FSH cuts various types of wood, plywood, decorative panels, soft fiberboard, hard board and aluminum sashes. Features: -Unique, adjustable laser marker, for precise cutting lines easily adjustable to users preference. -12 Amp motor, intense power for the toughest cutting jobs. -57 miter angle, to the right for ultra flexibility with 45 miter angle to the left. -45 bevel angle range, to the right and left allowing users to quickly and easily flip the saw blade and leave the material in place. -Positive stops on miter and bevel scale, for easy to read measurements and quick settings. -Linear ball bearing slide system, for superior accuracy and control. -Electronic speed control, maintains RPM while cutting and improves control. -Electronic soft start feature, suppresses sound pressure and recoil during start-up for smooth operation. -Adjustable pivot fence, broadly supports work piece for improved stability while cutting. -Electric brake feature, halts the rotation of the blade within seconds preventing unintended cuts. -Patented chip deflector, fully adjustable to prevent tear-out, align cutting line or for zero clearance support. -Carbon brush access, allows user to replace brush as needed to greatly prolong the life of the tool. -Dust collector attachment, minimizes airborne particles. -Splinter guard, prevents material from splintering and increases safety. -Compatible with the UU610 Universal Work Station. -Download Sliding Compound Miter Saw Brochure. -View the miter saw Miter and Bevel Capacities Chart. -Available in 10'', 12''. Includes: -Box Wrench. -Dust Bag. SpecificationsChristmas Sales Hitachi C12RSH 15 Amp 12-Inch Sliding Compound Miter Saw with Laser Specifications
The Hitachi C12RSH 12-Inch Sliding Dual Compound Miter Saw with Laser Marker provides smooth, accurate miters and crosscuts in a variety of workpieces, including wood, plywood, crown molding, decorative panels, soft fiberboard, hard board, and aluminum sashes. A top-of-the-line tool for trim carpenters, framers, and woodworkers who demand precision and reliability, the C12RSH features a compact slide system, Hitachi's exclusive Laser Marker System, and more.
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 Exclusive Laser Marker System ensures precision cuts. View larger. |
 Dial in precise angles with micro-miter and micro-bevel adjustment knobs. |
 Patented fixed rail slide system doesn't require rear clearance. View larger. |
Hitachi designed the C12RSH for versatile, easy use. The miter scale ranges between zero and 46 degrees to the left and zero and 57 degrees to the right, and a micro-miter knob lets you dial in precise angles. Additionally, positive miter stops allow you to easily change the angle of the cutting blade for creating miters in crown molding and other trim pieces.
The bevel scale ranges from zero to 45 degrees to the left and right, allowing your material to stay in place while you flip the saw head to make opposing cuts. After your major bevel angle is secured, a micro-bevel adjustment knob can be used to dial in a precise angle, while positive stops allow for quick and easy measurements and settings.
The 12-inch TCT saw blade (included) makes easy work of delicate trim and other woodwork, and the pivoting fence raises a height of 4-11/16 inches to allow for accurate vertical cutting of crown molding and other large workpieces.
Compact Slide System Requires Zero Clearance
With its revolutionary compact slide system, the C12RSH requires no rear clearance like other sliding saws. Hitachi's patented fixed rail system allows the saw head to glide smoothly along twin rails, which stay put and do not protrude to the rear of the saw. The result is a sliding saw that can be operated on a small work surface that has minimal rear clearance, such as up against a wall.
Laser Marker Technology for Perfect Cuts
Hitachi equipped the C12RSH with its exclusive Laser Marker System, which can be activated before the blade is in motion for exact alignment and predictable blade placement. The laser marker is easily adjustable to the left or right of the cut mark to suit your preferences, simply line up the laser with your mark on the workpiece, and the saw blade will make an exact cut along the laser guide. As long as your measurements are right, your cuts will be, too!
Chock-Full of User-Friendly Features
The C12RSH has plenty of features to help you make the perfect cut the first time. To start, it has a powerful 15-amp motor that generates a no-load speed of up to 3,800 RPM to smoothly and easily cut through even the toughest hardwoods.
For precise, safe cutting, a fixed splinter guard increases safety and reduces tear-out for clean, finished cuts, and a comfortable vertical handle with a vibration-reducing elastomer grip prevents slippage and keeps you in control at all times.
The C12RSH also includes a dust bag that minimizes accumulation of dust and particles in your both your workspace and the saw's interior components, keeping your jobsite clean and prolonging the life of the tool. An added bonus, easily accessible carbon brushes will help your saw perform for the long term.
The Hitachi C12RSH measures 23-7/16 x 36-5/8 x 27-15/16 inches and weighs 63.9 pounds. Durably built, this tool is backed by an industry-leading five year warranty.
About Hitachi: A Tradition of Innovation
Hitachi Power Tools (Hitachi Koki USA, Ltd.) provides professional-grade power tools for a variety of applications, including woodwork, metalwork, concrete, drilling, cutting, and fastening. Hitachi is a leader in power tool research and development and has achieved many firsts in the power tool industry, including creating the first-ever sliding compound miter saw to combine the capacity of a radial arm saw and the convenience of a miter saw. Today, Hitachi continues the tradition of innovation and engineering with new features in addition to classic quality.
What's in the Box
C12RSH Sliding Dual Compound Miter Saw with Laser Marker, 12-inch, 60-tooth TCT saw blade, dust bag, vise assembly, and box wrench.
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