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Which engineer’s scraper should you select?

Which engineer’s scraper should
you choose?

Shop for Engineer’s Scrapers

Blade type

Different types of engineers scraper The scraper you need will be determined by the workpiece you need to scrape, and the finish you want to achieve.

Whilst a triangular scraper can be used for most scraping, flat and curved blade scrapers can often be quicker and easier for certain scraping tasks.

Scraping a cylinder and scraping a flat surface A curved blade scraper is best for curved surfaces, such as inside bearings or cylinders, whilst a flat blade scraper is best for flat surfaces, and for applying a frosted finish to a scraped surface.

Scraper size

What size scraper should you use? The size of scraper you use will be influenced by the following factors:
Different scraper sizes

Scraper length and width

An engineer’s scraper’s size usually refers to its length, which is measured from the tip of the blade to the base of the handle.

Engineer’s scrapers can range in length from 100mm (4″) to 430mm (17″), longer ones being used mainly for frosting whilst smaller ones are often used to scrape awkward and less accessible areas of a workpiece.

The width of the scraper blade can vary between 20mm (3/4″) and 30mm (1-1/4″) approx. Wider scraper blades are used for rough initial scraping, whilst narrower blades are used for more accurate work.

The physical size of the user will affect the size of scraper they use

Physique and personal preference

As a general rule, someone who is taller will have longer arms, and require a longer scraper, just as a taller cricketer will tend to use a larger bat.

Scraping inside a cylinder

The type of scraper you are using

If you are scraping in tight areas, such as inside a bearing with a curved blade scraper, then you may want to use a shorter scraper than if you were scraping a flat plate with a flat blade scraper.

If you are using a triangular scraper for scraping up to the edge or into a corner of a flat surface, then it should be of a similar length to the flat blade scraper. Likewise, it should be shorter and about the same size as a curved blade scraper if it is being used on a curved surface.

Scraping vs frosting

Frosting, flaking or scraping

Frosting or flaking a surface normally requires the use of a longer scraper than when scraping a surface, because of the technique needed for frosting.

Wonkee Donkee says: "The material you are scraping may also have a bearing on the scraper blade you choose to use. To see how this could affect your choice of blade, take a look at the ‘What is a scraper blade made of?’ page."
Tightrope walking balancing act

Personal preference

Selecting the size of scraper you want to use is a balancing act between these factors and, most importantly, personal preference, as there is no point in using a scraper you do not feel comfortable with.

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