Bench Grinder Opinions--Steel City Model 15420

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Forum topic by groland posted 04-27-2009 05:28 PM 4514 views 0 times favorited 4 replies Add to Favorites Watch
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183 posts in 3436 days

04-27-2009 05:28 PM

My little K-mart B&D bench grinder gave up the ghost last week after over 30 years of service. I am now looking for a new bench grinder. I’d like one with variable speed and came across the Steel City model 15420, and 8 inch grinder with variable speed from 1725-3450 RPM. This seems like a wider range of speeds than most variable speed grinders.

Is an 8 -inch grinder too big for my needs? Would a 6 inch be better?

Most of my grinding will be regrinding damaged cutting edges on planes and chisels, but I will also use it for sharpening kitchen knives, lawnmower blades, etc.

Would this be a good grinder for these purposes? Anyone have experience with this grinder to provide advice?

Many thanks,

George Roland

4 replies so far

View marcb's profile


768 posts in 3698 days

#1 posted 04-27-2009 06:34 PM

I prefer a 6” wheel for hollow grinding hand tools. the cove is a little deeper and it makes it easier to register the chisel/iron on the stones for final honing.

Unless you are going to use the grinder for shaping/etc you really only need the speed you want to grind at, which is in the slower range.

I’ve just been using a coarse grey stone on a 3450 grinder, but can see where a white stone on a 1725 might speed things up a little since you don’t need to take many breaks to cool the steel.

View Bill White's profile

Bill White

4948 posts in 3985 days

#2 posted 04-27-2009 11:39 PM

Look at the Grizzly stuff. I have a very old Craftsman 7” (yeah, that’s right-7”) that has served me very well. I think the 6” would be plenty.


View glassyeyes's profile


137 posts in 3353 days

#3 posted 04-28-2009 12:06 AM

I’d vote for the 6 inch grinder, too. I’ve got an older Delta with the more friable white wheel, and it’s pretty good about not ruining the temper of the metal. The circumference of a 6” is only 3/4th’s of an 8 inch, so it automatically gives you a 25% speed reduction. And they’re cheaper, and the replacement wheels are cheaper.

-- Now, where did I put those bandaids?

View hoppeman's profile


8 posts in 2938 days

#4 posted 10-11-2010 07:28 AM

I have heard that a 8” bench grinder is more flexibl for different operations. I too am looking in this department. I like the variable speed control for sharpening tools especially chisels they will not heat up too fast with a white wheel.

I am looking at the PC model at Lowes both 6” and 8” ones. Both have variable speed and lights which is very important if you work in a basement.

Let me know what you think and mightbuy.


-- Steve,NJ

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