Angle grinders-variable speed or single speed

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Forum topic by AandCstyle posted 05-08-2014 12:23 AM 3369 views 0 times favorited 7 replies Add to Favorites Watch
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3185 posts in 2498 days

05-08-2014 12:23 AM

Topic tags/keywords: question carving sanding modern sculpting angle grinder

I would like to try my hand at making sculpted boxes and it seems that an angle grinder is pretty much the go to tool for this. I had pretty much decided on a Makita GA4030 until I saw a recommendation to get a variable speed grinder.

Here is my dilemma a VS Makita 9565CV costs about $100 than the GA4030 and I am not certain how much I will actually use the grinder. I know they can be used for carving out chair seats, etc. If I buy a SS grinder I really doubt that I would ever upgrade. Also, would I be correct in that sanding pads for the 4” unit will work on the 5” unit.

Any guidance/suggestions anyone can provide will be greatly appreciated.

-- Art

7 replies so far

View diverlloyd's profile


3291 posts in 2098 days

#1 posted 05-08-2014 02:22 AM

4 inch will work on the 5 and the variable speed is the way to go. A standard speed will cause burns, I use a variable for wood on the second lowest setting. With the variable you can also sharpen mower blades,polish metal with a polishing wheel. The arbor size is standard so you will be able to get sanding pads and sanding flapper discs or 3m pads. A grinder is a very versatile tool and if you think about doing some metal work get some thin cutting wheels and 1/8 and 1/4 in grinding wheels. Oh and a face shield always wear a face shield you never know when a pad will break or throw chunks at you at 10000 rpms it can do some damage.

View Shawn Masterson's profile

Shawn Masterson

1325 posts in 2190 days

#2 posted 05-08-2014 02:35 AM

I recommend a HF cheapo grinder and a router speed controller. If you decided to upgrade the grinder you still have the speed controler. And as for the 4”- 5” you need to make sure the shaft sizes match.

View AandCstyle's profile


3185 posts in 2498 days

#3 posted 05-09-2014 12:03 AM

Diver, thank you for the face shield tip and the other info.

Shawn, that is a great idea for someone just testing the water, so to speak. Thank you!

-- Art

View woodchuckerNJ's profile


1306 posts in 1875 days

#4 posted 05-09-2014 12:38 AM

I don’t think you get the torque when lowering the speed, so I am going to go with single speed.
I have a separate router speed control that I got from HF years ago for $9.

I have tried it on my grinder, and it does not have any torque. That doesn’t mean that a VS unit won’t have circuitry to adjust, but I doubt you will have the torque… just a feeling..

-- Jeff NJ

View changeoffocus's profile


467 posts in 1858 days

#5 posted 05-09-2014 12:48 AM

I have several grinders including one larger variable speed grinder polisher fro my working background.
I’ve had better luck with the single speeds except for polishing(buffing)
I like Metabo’s best and with those diamond coated wood wheels you can remove a lost of material including skin if it gets away from you. At slower (variable) speeds the tend to catch more often.
Just my experience.
Be careful,

View Shawn Masterson's profile

Shawn Masterson

1325 posts in 2190 days

#6 posted 05-09-2014 02:21 AM

+ 20 on the Metabo. The router controler is what I use for polishing granite. Works like a charm. as for torque anything is going to lose torque if you slow it down far enough.

View AandCstyle's profile


3185 posts in 2498 days

#7 posted 05-09-2014 11:59 PM

Thanks for the additional input. I think I am going to “poboy” my way into this and go with the HF grinder and speed control as Shawn suggested. IF I ever get great at this or decide that it is something I love to do, then I will look at the Metabos. :)

-- Art

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