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Flap Discs vs Grinding Wheels – A Mechanical Controversy

An angle grinder is a must-have tool for every mechanic. This versatile handheld tool is used to perform a variety of mechanical jobs like cutting, grinding, deburring, finishing and polishing. It can have a cord that runs from electricity or it can be battery powered. Because it is so handy and easy to use, it works perfectly with many abrasives. 

Now, comes the difficult part – choosing the right attachment for the job. Often, flap discs and grinding wheels are used to perform various jobs. Both of these have quite similar characteristics, which makes them difficult to choose from. This article is mainly focused on these two parts and their comparative study.

What are Flap Discs?

A flap disc is a shaping or contouring abrasive product that is used for different metals. The structure is such that it has overlapping abrasive “flaps” glued radially to a backing plate. Because of this structure, the discs last longer.

The major applications of flap discs are as follows:

  • To remove the rust from the surface
  • To deburr
  • To grind the edges and shape them
  • To blend welding seams
  • To clean flash from molds and casts

There are various kinds of flap disc shapes, sizes, and grits, but the ceramic flap discs win the race over others because of their fine performance with all metals including aluminum. 

What are Grinding Wheels?

A grinding wheel is an abrasive product that is used to grind away materials on stone and metal. Grinding wheels are made from thousands of tiny abrasive grains, which gives them a thick coarse appearance. 

The major applications of grinding wheels are as follows:

  • To remove high stock
  • To restore edges on worn-down shovels and tools
  • To perform an initial grinding on various tools

Difference Between Flap Discs and Grinding Wheels

There are many differences between the two, which tell us why the flap discs have an upper hand over the grinding wheels because of various reasons. Let us explore the advantages of using the flap discs over grinding wheels:

  1. Smoother Finish

The major advantage of using a flap disc is that they give a smoother finish to the product. Grinding wheels have a tendency to gouge surfaces, that’s why they do not give a smoother result. 

  1. Easy Control and Faster Job

Users have easy control over flap disks, which make them less likely to cause any damage to the product and reduce the chances of re-work. Also, this contributes to a job getting done faster.

  1. Less Noise

Flap discs create fewer vibrations and noise, which makes them easy to work with.

  1. Less Effort 

Since flap discs are easy to control, they require less effort to operate. You just have to remember to apply heavy pressure for grinding, and light pressure for finishing. 

  1. Cost-Effective

Because of the fact that you have easy control over the flap disc, it causes less damage, and it is cost-effective. Also, they reduce your labor costs.

Conclusion

Often, it is recommended to use a 40 grit Ceramic flap disc, because of the benefits discussed above. But you can also go for grinding wheels depending on your requirements. 

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