

✂️ Round your edges, sharpen your style.
The Rayson CRP4MMBK-US is a manual corner rounder punch featuring a precise 4mm cutting radius with a durable stainless steel blade. It cleanly rounds corners on paper, laminated documents up to 125 microns thick, and gift cards, handling up to three sheets of 80gsm paper at once. Its built-in shred tray ensures mess-free operation, making it an essential tool for professionals and creatives seeking polished, standout presentations.
















| ASIN | B08NTG2PFK |
| Best Sellers Rank | #92,125 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #557 in Paper Punches |
| Brand Name | RAYSON |
| Color | white |
| Customer Reviews | 4.0 4.0 out of 5 stars (777) |
| Hole Count | 1 |
| Item Length | 2.17 Inches |
| Manufacturer | Rayson |
| Material Type | ABS+Iron(Blade) |
| Operation Mode | Manual |
| Pin Hole Diameter | 4 Millimeters |
| Sheet Count | 20 |
C**E
Hold it flat and you're set!
This is a nice corner rounder that doesn't take off too much of the corner, but rather just rounds it off. Line up the paper with the guides, not the blade, so that it rounds just the corner without making a new one. Don't force the paper into the blade opening. If you hold the cutter upright it will catch the cut pieces, but turning it sideways can either make a mess on the table or jam the blade with scraps. It's easy to clean out, just make sure you line up the plastic bottom in all the holes. I got this to round off my business cards for a more organic shape without paying the extra money from my printer shop. I got through 1000 business cards, some bookmarks, and a ton of cardstock, and there's no sign of the blade dulling! Good quality.
A**R
Made my life easier
It gets stuck a lot, but it does the job and saves me hours.
B**N
It jams a bit.
I used it for a while now and there's moments where it jams and won't click down, eventually after using it for a couple of months. Just beware of it. Also don't use anything that's thicker than printer paper, it just won't do the job unless you want it to jam more and mess up what you've got.
F**A
Kind of unstable
After some days of using it did not have the same cutting strength it had the first day. It was less than a week and it didn not feel the same.
K**G
Works on laminate!
I print and laminate all my recipe cards. Since I have to cut down the laminated part the corners can get quite pokey. This little corner rounder solves that! Purchased a cheaper one first and was very disappointed… get this if you need to cut laminate.
C**K
Doesn't cut through laminate
I've used several of these exact corner cutter before and they've all worked great. But the last four I've ordered I've had to return because they simply don't work. They don't cut all the way through the laminate and leave a sloppy half cut corner.
K**A
Works great even on laminated cards.
This little thing works great! I laminated my recipe cards and got perfectly small rounded corners using this cutter. If it starts to feel like it’s not cutting as well, just empty the little clippings chamber on the bottom. I’ve clipped hundreds of corners and it seems to still be working great. Happy I found this!
J**N
Does not fully cut the entire corner
Terrible product - it does not fully cut the entire corner, requiring me to have to yank and pull, thereby making the corners look terrible. I'm pressing fully, it clicks as if it's cutting, but it only cuts well in the middle of the corner but not towards the edges of the corner. This product has pretty much ruined every corner clip project I've had.
D**G
面取りのために似たような製品をいくつか購入しました。 この製品は写真にもあるように若干「とりすぎ」な感じがします。 確実に角はとれるのですが、減ってしまう部分が多くなってしまうのと、 残ったほう側に多少バリがでてしまうようです。 また、背面のフタがプラモデルのようにプラスチックの穴に突起を入れるような構造になっているため 何度も開け閉めすると折れてしまうと思います。
C**I
Svolge bene il compito per cui l'ho comperato
P**.
THIS NEVER MEETS ISI STANDARDS. AND UTTER WASTE PRODUCT. AND THIS IS UNABLE TO CUT A SINGLE PAPER CORNER. Amazon occasionally misleads its valuable customers. BY PMLRA. Nadar
I**A
Très bon produit
P**I
Sirve para bordes de papel tipo cartón (unos 200 gsm). Hay que hacer bastante presión para que corte y si son muchas piezas cansa. No deja perfecto el corte, en las esquinas deja un corte