Circular Saw Dimensions

 

The most common circular saw size for the blade is 7 ¼ inches. There are other sizes available, but this is the most common as it has proven to be very useful. This size will score through 3 inch materials. There are also numerous blade types available for this size. 

Facts about the Circular Saw 

Also known as a buzz saw, the tool is used for cutting a variety of materials ranging from plastic, masonry and metal. The saw is characterized by the metal blade or disc. This has teeth along the edge. There is also a built in mechanism for spinning the disk. Depending on the circular saw size, it can be table mounted or hand held. 

Motor and Amps

If you are going to purchase a circular saw, make sure that it has enough power for the tasks at hand. For woodworkers, a circular saw capable of cutting through thick hardwood and wet timber is a necessity. 

If the power is lacking, the blade will overheat. This will lead to blade dullness. This will make it harder to cut material. A more serious problem is that the blade will push the saw towards you. This can be a safety hazard. 

The amps will indicate the saw’s power. The amps will denote the amount of electricity the tool is using. The horsepower on the other hand, refers to the rotational strength. 

Other Considerations 

Some of the other elements you should look for are adjustable knobs and lever locks. The best types of knobs are those that can be adjusted by hand. Don’t forget the cast metal shoes. This is necessary in case you drop the saw while using it. 

Cost and Weight

A high quality circular saw will set you back a few hundred dollars, but some online stores will sell them at discounts. If you take care of the saw, it will last for several years. Before you buy, spend some time testing and getting a feel for the tool.

The weight will vary, so make sure that you pick the one that is comfortable to work with. Read the manual before using it. This tool can be dangerous if not handled properly. 

Aside from the circular saw size, be certain you are wearing safety glasses. When you use the circular saw, debris will inevitably fly off. The goggles will protect your eyes. Wearing gloves is also a good idea. 

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Since its invention in 1882, various Fresno scraper sizes have emerged. However, the one invented by James Porteous came with a front board measuring 8 feet wide by 2 feet high and fitted with metal cutting edge.

Porteous’ design also had a short end board. There was also a tailboard where the operator would stand. Dirt was hauled by folding the front board. The hauled dirt would be stored by the end boards.

History

Porteous invented the scraper because he saw how the Central San Joaquin Valley depended on irrigation. As Porteous worked on his design, he revised it numerous times.

He even exchanged ideas with Abijah McCall, Frank Dusy and William Deidrick. Those three inventors were designing their own scrapers, but Porteous bought the rights to all their designs. Thus Porteous got the sole patent for
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From 1884 to 1910, several Fresno scrapers were created at the Fresno Agricultural Works. The scraper would be used on road and railroad grading, construction, land leveling and agriculture. The scraper also played a role in the building of the Panama Canal. It would also be used during World War I. Eventually the design concept would spread and influence other earth moving equipment.

Design and Usage

While the Fresno scraper size would change, its basic design remained the same. The device laid the foundation for the contemporary earth moving scrapers. The Fresno scraper was notable for being able to move and scrape soil. It could also discharge the soil at a specified depth. It meant the volume that could be handled quadrupled.

The blade would gather the soil. It would run on a bowl that could be modified to change the bucket angle to the ground. This allowed the scraper to deposit dirt to low areas. The concept revolutionized the industry. Such was the impact that it influenced the design of modern earth movers.

Other Information

Porteous got Patent No. 261,759 for his invention, which was called the dirt scraper. It later became known as the Fresno scraper after Fresno, Los Angeles, the city where Porteous invented it. To this day the shop that Porteous created is still running.

Whatever the differences in Fresno scraper sizes are, one thing is certain: it is one of the most vital civil engineering and agricultural tools ever made. In 1991, the importance of the Fresno scraper was recognized when it was enshrined as an International Historic Engineering Landmark.

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