Workshop Grinders, Buffers Or Polishers, N.s.
Twenty years of CPSC NEISS emergency-room records for this consumer product category, combined with demographic breakdowns, multi-year injury trends, and matching recall notices.
Home Communication & Entertainment · CPSC Code 899
Stable over 5 years
The verdict
Workshop Grinders, Buffers Or Polishers, N.s. carry a danger score of 38/100 (low risk), driven by roughly 20,784 ER-treated injuries a year that are roughly flat over the last five years.
- 38/100
- danger score (low risk)
- 20,784
- ER visits per year (avg)
- 1.9%
- end in hospital admission
- 35-44
- most-injured age group
Every figure is rendered from the CPSC NEISS record for product code 899 - last data year 2024.
PlainSafety danger score
How this 38/100 score is built
The score is computed from four CPSC-derived factors for workshop grinders, buffers or polishers, n.s. - no opinion, no editorializing:
- Injury volume20,784 ER visits/yr
- Severity (hospitalization rate)1.9%
- Fatality rate0.00%
- 5-year trend-1%
See the full methodology for the exact weighting of each factor.
What the CPSC Data Shows
Workshop Grinders, Buffers Or Polishers, N.s. (CPSC product code 899, in the Home Communication & Entertainment category) generate an estimated 20,784 emergency-room visits every year in the United States, adding up to roughly 394,899 ER-treated injuries across the 19-year span from 2006 to 2024. PlainSafety derives a danger score of 38/100 for this category (low risk), combining raw injury volume, demographic reach, severity of outcome, and multi-year trend. The five-year trajectory shows that injury counts are roughly flat over the last five years, with the busiest year on record being 2024 (27,726 estimated ER visits) and the quietest 2020 (17,691 estimated visits).
The single most common ER diagnosis for workshop grinders, buffers or polishers, n.s. is foreign body to the eyeball, accounting for approximately 154,289 visits across the 20-year NEISS window, followed by laceration to the finger (67,363 cases). The 35-44 age group absorbs the largest share of injuries, about 81,101 cases over the NEISS window, and males appear slightly more often than the opposite sex in that cohort. Severity outcomes from the NEISS disposition field show that 1.9% of ER visits involving this product end in hospital admission or transfer.
Beyond the hospital-sampled NEISS projections, this page also aggregates 8 consumer incident reports filed directly on SaferProducts.gov, plus 20 anonymized ER narratives - together forming a layered picture of how workshop grinders, buffers or polishers, n.s. fail in real households. Every figure on this page comes from CPSC-published data: NEISS projects national estimates from a probability sample of about 100 U.S. hospital emergency departments, while SaferProducts.gov collects voluntary reports from consumers, manufacturers, and clinicians. The danger score, trend indicators, and demographic breakdowns update automatically when CPSC releases a new yearly NEISS file, which is why this page is dated 2024-12-31. For regulatory context, consult CPSC recall notices and the SaferProducts.gov public database linked below.
Annual Injury Estimates (2006–2024)
Source: CPSC NEISS national estimates CPSC NEISS national estimates Injuries represent ER-treated cases only
Who Gets Injured?
| Age Group | Male | Female | Total |
|---|---|---|---|
| 0-4 | 315 | 21 | |
| 5-14 | 1,946 | 165 | |
| 15-24 | 48,634 | 1,138 | |
| 25-34 | 75,657 | 1,425 | |
| 35-44 | 79,467 | 1,634 | |
| 45-54 | 73,216 | 1,869 | |
| 55-64 | 58,229 | 811 | |
| 65-74 | 36,895 | 264 | |
| 75+ | 13,124 | 86 |
Most Common Injuries
| Body Part | Diagnosis | Est. Injuries |
|---|---|---|
| Eyeball | Foreign Body | |
| Finger | Laceration | |
| Eyeball | Contusions, Abr. | |
| Hand | Laceration | |
| Lower Arm | Laceration | |
| Wrist | Laceration | |
| Upper Leg | Laceration | |
| Face | Laceration | |
| Lower Leg | Laceration | |
| Knee | Laceration | |
| Eyeball | Other | |
| Finger | Fracture | |
| Finger | Avulsion | |
| Eyeball | Derma/conjunct | |
| Foot | Laceration |
Severity Breakdown
ER Visit Narratives
Real anonymized emergency room reports from the CPSC NEISS database.
53YOM PRESENTS AFTER CUTTING HIS LEFT INDEX FINGER WITH A GRINDER DX: FINGER LACERATION
43 YOM GRINDING METAL C/O SOMETHING EYE DX FB EYE
61 YOM WAS GRINDING A MAIL BOX AND GOT METAL IN EYE DX: FB
31YOM PATIENT WAS USING A *** TOOL GRINDING A PIECE OF METAL, EYE PAIN, HE MAY HAVE A PIECE A METAL IN HIS LEFT EYE DX: FOREIGN BODY OF LEFT EYE
60 YOM REPORTS GRINDING METAL AT HOME 2 DAYS AGO, NOT WORK-RELATED, WEARING FACE SHIELD, BUT STILL HAD METALLIC FB INJURY. DX: FOREIGN BODY RIGHT CORNEA, ABRASION RIGHT CORNEA.
33 YOM WAS USING A GRINDER TO SHAVE A STAINED-GLASS WINDOW AND GOT A FLECK OF GLASS IN EYE. DX: EYE FOREIGN BODY RIGHT.
60YOM FROM HOME WAS USING A GRINDER WHEEL WHEN HE ACCIDENTALLY STRUCK HIS LEFT THUMB SUSTAINED A LACERATION TAKES *** DX: LACERATION OF LEFT THUMB
20YOM PRESENTS WITH CONCERN FOR RETAINED FOREIGN BODY IN THE LEFT EYE AFTER GRINDING SOME METAL YESTERDAY. HE WAS WEARING PROTECTIVE EYEWEAR BUT A PIECE FLEW AND OUTSIDE OF THE EDGES OF HIS EYEWEAR. DX: FOREIGN BODY OF CONJUNCTIVA, CORNEAL ABRASION
44YOM PRESENTS WITH LACERATIONS TO RIGHT THIGH AND SCROTUM AFTER WORKING WITH AN ANGLE GRINDER THE BLADE CAME APART AND CUT HIS THIGH AND SCROTUM DX: SCROTAL LACERATION, LACERATION OF THIGH
69 YOM WAS GRINDING A METAL PIPE 4 DAYS AGO AND GOT SOMETHING IN HIS EYE. DX CORNEAL FOREIGN BODY, ELOPED FROM ED
58 YOM WAS KNEELING IN HIS GARAGE TODAY WHEN A METAL GRINDER FELL FROM 3 FEET OFF A SHELF AND STRUCK HIM IN THE HEAD 5 HOURS AGO. DX: CLOSED HEAD INJURY, SCALP LACERATION
57 YOM. FINGER LAC, CUT ON GRINDER. DX: LAC OF INDEX FINGER
Consumer Incident Reports
Reports filed by consumers on SaferProducts.gov.
(09/15/2012) The consumer stated that he was going to make a bar- b-que smoker. The consumer stated that he put the blade on a grinder. He let it run for a minute. As the consumer was going to make his punch cut on the smoker, the blade exploded into about nine pieces. The consumer stated that a piece of the blade flew and hit his left arm about five inches below his wrist. The consumer grabbed his elbow because it was squirting blood. The consumer stated that he squeeze the artery to stop the blood. The consumer stated that he walked to the house and yelled for his wife. He stated that she called 911. The consumer stated that the ambulance came and took him to Bloomington IU in Bloomington, IN. The consumer stated that he was seen by [REDACTED] in ER. [REDACTED] cleaned the wound and stitched it up. The consumer stated that he was sent to x-ray to make sure that there was no foreign debris in the cut. The consumer was advised that his ulnar nerve, artery and tendons were cut. The consumer stated that he developed a blood clot. The consumer stated that he had to go back to the emergency room. The consumer stated that he was seen again by [REDACTED]. [REDACTED] ordered an ultrasound on his arm. The consumer stated that the doctor advised him to follow-up with a vascular surgeon. The consumer is still under the doctors care. (09/17/2012) The consumer contacted the manufacturer. The consumer spoke with [REDACTED]. The consumer was advised to send them the disc. The consumer sent the disc to them. The disc was returned to the consumer after it was inspected. The consumer was advised that they would not do a destructive test. (12/11/2012) The consumer stated that the last email the he received from [REDACTED] advised him that they did not find a product defect. The consumer stated that they asked for his permission to do a destructive test. The consumer stated that he denied the request. The consumer stated that [REDACTED] Tool Company
WEN 94475 7.5-Amp 4-1/2-Inch Angle Grinder. Purchased from Amazon April 25th. Did not use the grinder untill June 27th after 2 minutes the grinder went on fire, blue,smoke and flames. Pulled cord from electrical outlet and grinder was very hot. Reported to Amazon they would do nothing due to out of return date. Wrote to WEN they would not reply. Wrote to BBB ,to date no response. Numerous instances in Amazon reviews i regard to fires and blue smoke but Amazon refused to deal with the product when I contacted them.
On March 8th, 2011, I went to cut a section of steel chain link fence pipe at my home. I was using a Cal-hawk metal cutoff wheel on a Milwaukee 4 1/2 inch angle grinder (Model 6148). My complaint is that the Calhawk cut-off wheel came apart while in use on a high speed grinder. I was not injured. I installed the Cal-hawk cut off wheel on the angle grinder. Specifically, a 4-1/2" CAL-HAWK CZCW4510 metal cut-off wheel. I started to make my cut into the bare fence pipe. I made about half of the cut when I noticed the wheel becoming wobbly. I set the tool down and waited. I unplugged it and then inspected the wheel. In short, the wheel's cutoff material seperated from the metal ring it was attached to. I have pictures which I hope to upload. The wheel is marked as being good until 14,000 rpm. The maximum my angle grinder can turn is 10,000 rpm. I'd be willing to mail you at my expense the wheel and component if you'd care to take a look.
The meta;l safety guard on my Harbor Freight 4 1/2 " grinder sheared off and my face was injured by a combination of the separated guard , and fragmented grinding disc . It is impossible to know if the separated guard caused the grinding disc to shatter or the disc fragmenred first and the guard sheared off in the event , but in either scenerio , the guard should not separate from the tool and become part of the violently exploding metal fragments .The clamp( that was originally a part of the ONE piece metal guard) remained in place on the grinder Some of the impact to my face knocked my safety glasses off , destroyed and knocked off my Harbor Freight LED headlamp , and I suffered a "goose egg" and a cut over my right eye . It required a trip to the ER but required no stitches ... I was lucky . Most disturbing is this is the SECOND TIME a guard on this Harbor Freight model has sheared and injured me ! The first time it happened , the impact knocked off my safety glasses and the impact to my left eye caused a " black eye" . Harbor Freight switched out the first defective grinder and sent it back to headquarters for defect issues , but apparently , it is still an inferior guard that creates additional hazard .
The consumer used the drill for approximately 5 minutes, when he dropped the angle grinder. The angle grinder hit his right leg, below the knee (just above the ankle), while it continued to operate. The consumer sustained several lacerations to his leg. His wife rushed him to the ER, which was only minutes away. Layers of his skin were removed by the angle grinder, so sutures could not be applied. His wound was cleaned, bandages were applied to his leg and pain reliever was administered. The consumer was released the same day. The consumer sent dealer and email about the incident. He was passed around to a few different rep's before finally corresponding with [REDACTED], (Claims Specialist Supv.). 8/3/2020: [REDACTED] sent the consumer an email and inquired how he was doing. She asked for additional details. [REDACTED], called the consumer, requested the angle grinder and gave him instructions as to how to file a claim. She also asked the consumer to send an email indicating what he was looking for in terms of compensation. The consumer sent the angle grinder and several extra grinding discs and the wire wheel that was being used with the angle grinder at the time of the incident. The consumer has been waiting to see how the firm will handle the matter and what type of compensation they may offer him, but the firm has not provided further details in the last few months.
Century grinding wheel 41/2" diameter, 1/16" thickness and 7/8" arbor, rated to 13,200rpm. 120lbs of air pressure, grinding is rated at 13.4 so never came near where it states wheel is rated. Safety was on at the time of incidents. Caller's husband has used these wheels for over 20 years but these most recently purchased, shattered into several parts while in use with pieces flying off in all directions. The first time this happened was Friday, November 16th, 2012 or Saturday, November 17th, 2012 when a piece flew between caller's husband and friend but was dismissed as this being one wheel that may have a defect. Another incident happened with a different grinding wheel shattering during use Friday, November 23rd, 2012 but this time the pieces cut a groove in the palm of his hand from close to the wrist and ending under the smallest "pinkie" finger. Caller drove her husband to the Jewish Hospital Emergency Room after finally convincing him that he needed to go for treatment. Doctor [REDACTED] with the emergency room diagnosed his laceration, placed two stitches inside, four outside and prescribed antibiotic to prevent infection. Callers have not contacted the manufacturer, they did contact the retailer who told them that they would contact the manufacturer. Callers have been unable to find all the pieces but have saved the one's that they have found. They have one that has not been used and one that has been used and shattered.
I was injured by a product that had inadequate warnings. I purchased a wood cutting disc for my angle grinder from Amazon. On the webpage on Amazon (where I purchased it) and on the box, there was no warning about extreme kickback. When I went to use the product as advertised, it caused my angle grinder to kickback, flying out of my hands despite my firm grip, slicing my arm badly enough that I almost needed a tourniquet, and later at the hospital, 7 stitches. I'm concerned about the potential this product has to severely injure (or even kill) someone else due to lack of warnings on the webpage and the box that it came in.
the product that failed is Freud-Diablo Flap DISC Integrated HUB The first incident I was using a [REDACTED] grinder rotation speed 1100 RPM. As soon as I started the grinder, the abrasive flap disk came apart form the red plastic and struck me in the thumb going through my leather glove and cutting my knuckle on my pointer finger down to the bone. The second incident exact same as the first but this time the material hit my in the stomach. Please see attached photo. In both incidents, the blade was not touching any metal as it broke apart right as the grinder started
Product Recalls
Search for active and past recalls related to workshop grinders, buffers or polishers, n.s. on the CPSC website.
Frequently Asked Questions
How dangerous are workshop grinders, buffers or polishers, n.s.?
Based on 20 years of CPSC data, workshop grinders, buffers or polishers, n.s. have a danger score of 38/100 (low risk). An estimated 20,784 ER-treated injuries occur annually in the U.S. related to this product category.
What are the most common injuries from workshop grinders, buffers or polishers, n.s.?
The most common injury is foreign body to the eyeball, accounting for approximately 154,289 injuries over 20 years.
Are injuries from workshop grinders, buffers or polishers, n.s. increasing or decreasing?
Stable over 5 years.
Who is most at risk for workshop grinders, buffers or polishers, n.s. injuries?
The 35-44 age group accounts for the most injuries, with approximately 81,101 cases recorded over 20 years. Males are more frequently injured in this age group.
What happens when someone is injured by workshop grinders, buffers or polishers, n.s.?
Of all ER visits involving workshop grinders, buffers or polishers, n.s., approximately 1.9% result in hospital admission. The majority of patients (98.1%) are treated and released from the emergency department.
How can I report a safety problem with workshop grinders, buffers or polishers, n.s.?
You can file a consumer incident report at SaferProducts.gov, the official CPSC reporting portal. Reports help the CPSC identify emerging hazards and trigger investigations or recalls. You can also call the CPSC hotline at 1-800-638-2772.
Related Products in Home Communication & Entertainment
Safety Guides
What this means for you
Treat the 38/100 score as relative risk between products, not your personal odds of injury.
- See where this category ranks against every other tracked product. Full rankings
- Injuries cluster in the 35-44 age group, take extra care if that describes your household.
- Check for active recalls on this product before you assume it is safe. CPSC recalls
NEISS estimates ER-treated injuries from a national probability sample of hospitals; they do not capture injuries treated elsewhere or not treated at all.
Data: CPSC National Electronic Injury Surveillance System (NEISS) 2005–2024 and SaferProducts.gov consumer incident reports. Injury estimates are based on a nationally representative probability sample of U.S. hospital emergency departments. This page is for informational purposes only and is not affiliated with the CPSC.
Read our methodology - how this data is sourced, scored, and verified.