Toolipedia: Drywall Rasp

Toolipedia: Everything you wanted to know about the drywall rasp.

a drywall rasp with labeled parts | Construction Pro Tips
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What is a drywall rasp?

A drywall rasp is a handy tool for fine tuning cuts for drywall. A drywall rasp comes in handy on occasions where a piece of drywall is cut out for windows, patches, receptacles or other holes and is too large. Trying to cut small amounts of drywall off to refit a piece with a utility knife or keyhole saw can cause the drywall to break and fracture. A drywall rasp acts similar to a cheese grater skimming off small amounts of drywall with each pass. There are a variety of rasp designs though most have a similar opened, cross-hatched blade. Here are the basic parts of a drywall rasp:

  1. Handle
  2. Cutting blade
  3. Reservoir or drywall cutting catch

Drywall professionals, remodelers and DIYers may all use a drywall rasp to trim pieces of drywall.

How is a drywall rasp used?

Operation basics

  • Mark the area on the drywall where it needs to be trimmed
  • Draw the rasp back in a pulling stroke (some models can use both pull or push strokes)
  • Clean out the reservoir frequently

Accessories needed

  • Replacement blades


  • Using a drywall rasp can produce significant dust: use proper eye and respiratory protection

What are the different types of drywall rasp?

  • There are a variety of designs of drywall rasps based on handle shape
    • Plane style
    • Sanding block style
    • Handheld
  • Some drywall rasps have permanent blades
  • Some drywall rasps have different types of cutting heads

What makes a good drywall rasp?

  • Ergonomic handle
  • Replaceable blades
  • Multiple Cutting edges
  • Easily cleanable dust catch

Tajima makes a high quality drywall rasp.

Drywall Rasp Tip

Do a couple of passes with the rasp and check the fit to ensure that you don’t overcut the drywall and leave a large gap.

Learn more about drywall here.

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LeRoy Demarest
I have worked for over a decade as an environmental scientist working on an advanced bioremdiation clean up project. For the past six years I have also worked as an adjunct instructor for several colleges, both F2F and online, teaching a number of science courses. Finally, I have been freelance writing for a variety of publications on the topics of: gardening, environment, construction, science, science education, academics and technical work.