Eccentric grinder from angle grinder - video

Eccentric grinder from angle grinder. By Master Sh. 5:09 video:

https://www.youtube.com/watch?v=SOkbqdUXWyk

other than making the sanding disc "wiggle" I don't see what value this is adding - what am I missing?

I wish I had that vise.

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Originally Posted by desbromilow

other than making the sanding disc "wiggle" I don't see what value this is adding - what am I missing?

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An oscillating sander is more efficient than a pure rotary one and is less likely to gouge soft work and leave a series of small swirl marks as compared to large semi-circles which is why they are used to cut paint. Also don't clog sandpaper as much as a rotary sander.

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Originally Posted by NortonDommi

An oscillating sander is more efficient than a pure rotary one and is less likely to gouge soft work and leave a series of small swirl marks as compared to large semi-circles which is why they are used to cut paint. Also don't clog sandpaper as much as a rotary sander.

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Thanks NortonDommi, so it is just "wiggling " to create much smaller movements - and the why is what you said above about small swirls, and less clogging of the paper.

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Originally Posted by desbromilow

Thanks NortonDommi, so it is just "wiggling " to create much smaller movements - and the why is what you said above about small swirls, and less clogging of the paper.

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It also utilizes more of the abrasive available, with the center, not building up a raised deposit. The semi-circles are about 3/8" diameter, instead of concentric scratches. Not as fine a finish, but much like lapping.

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Originally Posted by Toolmaker51

It also utilizes more of the abrasive available, with the center, not building up a raised deposit. The semi-circles are about 3/8" diameter, instead of concentric scratches. Not as fine a finish, but much like lapping.

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Thanks!!! - makes sense - you can tell I don't do a lot of sanding, but I daresay that will change one day.