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✂️ 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 | #68,913 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #440 in Paper Punches |
| Brand | RAYSON |
| Brand Name | RAYSON |
| Color | white |
| Customer Reviews | 4.0 out of 5 stars 778 Reviews |
| Hole Count | 1 |
| Item Length | 2.17 Inches |
| Manufacturer | Rayson |
| Material | ABS+Iron(Blade) |
| Material Type | ABS+Iron(Blade) |
| Model | 10317030 |
| Operation Mode | Manual |
| Part Number | 10317030 |
| Pin Hole Diameter | 4 Millimeters |
| Sheet Count | 20 |
| Unit Count | 1.0 Count |
| pin hole diameter | 4 Millimeters |
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**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.
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.
A**Z
Works as advertised
It gets the job done, but there is a groove where you press down and the groove hurts your thumb after repeated use. It's also loud. I usually put ear plugs in if I know I'll be using this for more than a couple minutes.
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!
T**G
Doesn't cut for spit.
This is the second time I order these. The first order was 2019 or early 2020, I believe, those are now worn down and don't cut that great any more. but they do cut the better than the ones I just purchased. The latest purchase leaves and offset at the rounded corner to the straight edge. This is true for all three that I purchased, Unfortunately I didn't use them right away and RETURN time has passed. The only thing left to do is throw them in the trash where they belong. Very disappointed that a simple item can't be made correctly. Tim Hassing
S**S
Well built and does a great job
We ordered miniature wallets of my daughter's graduation pictures. They arrived in sheets which we had to cut. I ordered this little corner cutter to give them a more polished look. It does a great job, and I use it on many little paper notes and projects.
J**N
Clean cutting
A must have for magicians.
D**G
若干とりすぎ感も
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
Funziona
Svolge bene il compito per cui l'ho comperato
P**.
WASTE PRODUCT IN THE WORLD.
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
Parfait et pratique
Très bon produit
P**I
Aguanta pero muerde los bordes
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
Trustpilot
4 days ago
2 days ago