Key Features
Overview
Mirka Coarse Cut 70 x 420 mm PSA P36 Abrasive Strip is a heavy-duty sanding abrasive for fast material removal in demanding prep work. This is a PSA abrasive strip designed for aggressive sanding and surface preparation. Model Number: 40-364-036. If you need to knock down material quickly before moving to finer grits, this is the kind of strip that makes sense.
The big story here is the coarse P36 grit. That grit level is meant for serious removal, not finish sanding. It is the right choice when you are leveling rough surfaces, stripping heavy buildup, or starting the first pass on a surface that needs a lot of correction before refinement.
Mirka also calls out a specially reinforced backing and its Progressive Bond technology. In practical terms, that means the strip is built to handle higher sanding loads without giving up durability too early. The reinforced backing matters on edges and harder-working contact points where cheaper abrasive strips tend to wear out fast or break down unevenly.
Another useful detail is flexibility on curved surfaces. A lot of aggressive abrasives cut well but fight you when the work is not flat. This Mirka strip is built to stay useful in shaped or contoured areas while still giving you the bite you expect from a coarse sanding product. Mirka also notes low clogging, which helps the abrasive keep cutting instead of loading up early.
The 70 x 420 mm format makes this a purpose-built abrasive strip for tools and sanding setups that accept that size and use a PSA attachment method. If your work depends on secure adhesive-backed strips rather than hook and loop, this setup is simple and dependable. It is a practical choice for users who want a firm hold during aggressive sanding passes.
Who should buy it? This is a good fit for bodywork, wood surface prep, paint removal, filler shaping, and other heavy sanding tasks where speed matters more than finish quality on the first pass. Pros will appreciate the durability and cut rate. Serious DIY users will like it when they have rough prep work that would waste time with finer paper.
Built to Remove Material Fast
If your first sanding pass is about removing material, not babying the surface, this strip is in its lane. It is made for demanding prep where a coarse cut saves real time.
- P36 grit is suited to aggressive sanding and initial surface leveling
- Reinforced backing helps the strip hold up under heavier pressure
- Low-clogging design helps maintain cut over longer sanding passes
Key Specifications
| Brand | Mirka |
|---|---|
| Product Type | PSA abrasive strip |
| Dimensions | 70 x 420 mm |
| Grit | P36 |
| Attachment Type | PSA |
| Backing | Specially reinforced backing |
| Bonding Technology | Progressive Bond |
| Use Case | Heavy-duty sanding and surface preparation |
Built For
Pro Tip
Use this P36 strip as your first-pass abrasive only, then step through finer grits instead of trying to make one strip do the whole job. That keeps the cut rate high and saves you from leaving deep scratches in the final surface.
Tool Nut’s Take
Mirka Coarse Cut 70 x 420 mm PSA P36 Abrasive Strip Means Business
This is the strip you grab when the job calls for removal speed, solid backing, and less time wasting on loaded-up abrasive.
- Who it’s for: Pros and serious DIY users doing rough prep, stripping, shaping, and first-pass sanding.
- Why it stands out: The coarse P36 grit, reinforced backing, and low-clogging design make it a practical heavy-cut option instead of a throwaway strip.
- Worth knowing: This is not a finish-sanding product. It is built to remove material fast, so plan on following it with finer grits.
Common Questions
- What grit is this abrasive strip? It is a P36 coarse grit strip for aggressive sanding and material removal.
- What size is the strip? The strip measures 70 x 420 mm.
- What does PSA mean here? PSA means pressure sensitive adhesive, so this strip is made for tools or pads that use adhesive-backed abrasives.
- Is it meant for heavy sanding? Yes. Mirka positions the Coarse Cut line for heavy-duty sanding, with reinforced backing and reduced clogging for demanding work.
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