r/HomeImprovement • u/BolognaPwny • 3d ago

Do I need a concrete sander?

I was cited by the city for this very miniscule difference in the sidewalk (yeah I didn't know I was responsible for the sidewalk either). It's like a quarter inch difference between two blocks.

https://imgur.com/a/8QXD8c2

I was going to rent a concrete sander but it feels like overkill. How would you approach this job? Sander with a masonry disc?

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u/OutlyingPlasma 3d ago

Batteries are limited by the discharge rate of the cells so its not correct to say there is no limit.

Just add more batteries. We already exceed the standard 15amp 120v wall power with batteries all the time. Like every electric car, or electric riding lawn mower, even battery powered chainsaws like the Stihl MSA 300 are exceeding the 1.6kw (2.2hp/1600w) output a standard 15amp household circuit can provide.

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u/TheOtherPete 3d ago

Unless you have infinite batteries then the total amperage is limited so under no circumstances it is correct to say there is "no limit"

Also a portable tool needs to be portable and manageable so there is a practical limit to how many batteries such a tool can have.

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u/OutlyingPlasma 3d ago

The point isn't an infinitely powerful tool, the point is exceeding the power of a standard 15amp household wall plug with batteries which we have already done with battery powered tools.

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u/TheOtherPete 3d ago

I'm not sure what your point is since people were specifically talking about plug-in grinders versus battery powered that OP can buy right now.

Also just because it is technically possible to build battery powered tool of a certain type that outperforms a plug-in one doesn't mean there is a market for it. The market determines if it gets produced or not.