Toolipedia: Drywall Rasp
Toolipedia: Everything you wanted to know about the drywall rasp.
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:
- Cutting blade
- 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?
- 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
- 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
- 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.