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Angle grinders-variable speed or single speed

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Forum topic by AandCstyle posted 05-08-2014 12:23 AM 608 views 0 times favorited 7 replies Add to Favorites Watch
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AandCstyle

1487 posts in 1011 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

diverlloyd

337 posts in 611 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

1262 posts in 702 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

AandCstyle

1487 posts in 1011 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

woodchuckerNJ

901 posts in 387 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 Bob Current 's profile

Bob Current

399 posts in 371 days


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

Art,
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,
Bob

-- When you are wrong admit it, when you are right forget it.

View Shawn Masterson's profile

Shawn Masterson

1262 posts in 702 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.

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AandCstyle

1487 posts in 1011 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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