
OLFA 145B
Score: 85/100
OLFA 28mm Rotary Cutter
Score: 80/100Rankings

The OLFA 145B is a medium-duty utility knife designed for precision cutting of delicate materials like wallpaper and vinyl. Its key strength lies in the ultra-thin special black blade that ensures clean cuts without surface damage. It is best suited for professional wallpaper installers and detail-oriented trades needing thin, clean cuts.

The OLFA 28mm RTY-1/C Quick-Change Rotary Cutter is a compact, ambidextrous tool designed for precision cutting in quilting, sewing, and crafts. It features a 28 mm tungsten steel blade and a sliding lock mechanism for safe, easy blade changes without loose parts. It is best suited for quilters, sewists, and crafters who require precision on small-scale projects, intricate fabric cuts, tight corners, narrow strips, and template or pattern work for miniatures.
| Attribute | ![]() | ![]() |
|---|---|---|
9 mmbest | — | |
| ↓ lower better | — | 45 gbest |
146 mm | 220 mmbest | |
0best | — |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Blade & Cutting(3) | ||
Blade Type | Special M-shaped | 28mm Rotary |
Blade Material | Black Coated Steel | Tungsten Steel |
Compatible Blade Type | Olfa Medium Special Black | RB28, PRB28 |
Handle & Ergonomics(4) | ||
Handle Material | Composite/Plastic | Contoured Plastic |
Handle Type | Medium | Ambidextrous |
Overall Length (mm) | 146 mm | 220 mm |
Weight (g) | g | 45 g |
Safety & Mechanism(2) | ||
Locking Mechanism | Auto-Lock | Sliding Lock |
Blade Change Mechanism | Manual Fold | Quick-Change Sliding Lock |
Application & Support(4) | ||
Suitable Materials | Wallpaper, Vinyl, Film, Foam | Fabric, Paper, Leather, Rubber, Film |
Intended Use | Precision Cutting | Quilting, Sewing, Crafts |
Warranty | Long Life Award | |
Included Blades | None | 1 |


Products in the top-left offer the best value (high score, low price).

Professional reviewers categorize the OLFA 145B as a 'Medium-Duty' tool that offers durability, strength, and precision in a compact size, highlighting it as a 'must-have' for professionals.
Users praise the tool for its ability to make clean cuts on wallpaper without causing surface damage, though some note the need to purchase refill blades separately.

Professional sources and manufacturer descriptions position the OLFA RTY-1/C as the ideal solution for intricate cuts, highlighting its unparalleled sharpness and precision. It is described as the answer for detailed work in quilting and sewing, emphasizing its ability to handle tight corners and small shapes where standard cutters fail.
There is no available consumer sentiment data, as search results contain no user reviews, testimonials, or forum discussions. Consequently, common praise or recurring themes from everyday users cannot be identified.

