I bought this to cut some ~1/8" steel. In particular, this rack:
https://www.amazon.com/dp/B002RYYY7C?psc=1&ref=ppx_yo2ov_dt_b_product_details
The two rows of holes on each post are in line with each other so the rear set needs to be cut off. Not knowing that before I bought that rack, I bought this grinder to do the cutting. I was shocked to find that the manual claims that this grinder cannot be used for cut-off applications, because it doesn't say that anywhere on the Amazon page, or even on Bosch's website, unless you download the manual. However, other manufacturers such as Makita offer similar-sized grinders with the same or lesser specs that claim to support cut-off work, so I figured why not give it a shot. And sure enough, it works just fine. Just don't lay into it too hard and let the disc do the work. Also, wear adequate PPE and a dust mask or respirator, it generates tons of particles and stinks as the disc wears.
Other 4.5" Bosch grinders claim to support cut-off applications, but it seems that Bosch has discontinued the "optional" cut-off guard, and finding guards for other brands of 4.5" grinders seemed equally challenging at this price point. It would appear that most people just toss a cut off disc in there and go, using the included "Type 27" guard that comes stock with this and any other brand of entry-level grinder. User beware, and be careful, but there are loads of videos on YouTube showing people using grinders to cut metal with Type 27 guards installed.
Installing a Type 1 (flat) disc doesn't leave a lot of clearance with the included guard though, so I opted for a Type 27 cutoff wheel. This has the depressed center like the included grinding wheel, and offers better clearance. The one I got (Norton Blue Fire) says to use it with Type 27 guards, which happens to be what's included with this grinder. Despite this, the manual says not to use the included Type 27 guard for cut-off applications.
It appears that there's a lot of conflicting information as to what can and can't be done. Or rather, what should or shouldn't be done. But for everyone wondering if this grinder is suitable for cutting, the answer is yes. Buy it, you'll be happy. It's inexpensive, and if you burn it out, just buy another. It'll still be less expensive than some of the other higher-end models out there. You'll be happy.
| Brand | BOSCH |
|---|---|
| Material | Plastic |
| Product Dimensions | 11"L x 3"W x 3.7"H |
| Style | Adjustable |
| Power Source | Air Powered |
| Color | 4-1/2" |
| Item Weight | 4.2 Pounds |
| Voltage | 120 Volts |
| Wattage | 7.5 watts |
| Maximum Rotational Speed | 11000 RPM |
| Manufacturer | Bosch |
| Part Number | GWS8-45 |
| Item Weight | 4.2 pounds |
| Country of Origin | China |
| Item model number | GWS8-45 |
| Is Discontinued By Manufacturer | No |
| Size | 4-1/2" |
| Item Package Quantity | 1 |
| Measurement System | Metric |
| Special Features | lightweight |
| Included Components | (1) Spanner Wrench, (1) 4-1/2-Inch Abrasive Wheel, (1) Wheel Guard, (1) Flange Kit, (1) Auxiliary Handle |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Warranty |
