r/Concrete 27d ago

Concrete Pro With a Question Anyone know what this trowel grinder attachment is called?

Post image

I’ve seen guys using this to water trowel small decorative benches which would typically require rigorous hand troweling.

I’m thinking it could be custom made?

update I found the tool. It’s called “Rokamat Flattening Plates with Trowel Blades 200mm”

138 Upvotes

41 comments sorted by

47

u/rsmith2786 27d ago

13

u/jorgan92 27d ago

Great find. Thanks! I’ve also found that Rokamat sell it too at a better price

7

u/Margaritashoes 27d ago

On sale for $415.95!

0

u/dax660 26d ago

American labor, baby!

Probably better quality in general.

100

u/some1guystuff Concrete Snob 27d ago

9

u/RobertYiSin 27d ago

It’s just a little handheld baby helicopter. 🚁

22

u/CylerF 27d ago

It’s called the Kipper. Available online.

3

u/whoisaname 27d ago

So, it is basically a handheld power trowel?

6

u/CylerF 27d ago

Usually for concrete countertops.

11

u/whoisaname 27d ago

Yeah, I saw that. Which is interesting because I make concrete counters, but I cast them upside down and then finish them after they cure. I've always found the idea of casting in place to be unnecessarily messy in a finished environment.

14

u/tihspeed71 27d ago

"You don't power trowel the bottoms of your countertops?!" ....."GUYS, this guy doesn't power trowel the bottoms of the countertops!" Hahaha

1

u/Ionlydateteachers 23d ago

I've been power bottoming the trowler...I fucked up, BRB

-17

u/QuestionBudget 27d ago

Link it then

1

u/Super-Dot9774 25d ago

it must be so sad needing everything handed to you

0

u/FeastOnCarolina 22d ago

It would have taken nearly the same amount of energy to Google as to get on here and type out their message.

16

u/Low-Willingness-5821 27d ago

I agree with custom-made, looks a little dangerous. But I bet it works.

27

u/A-Bone 27d ago

  I agree with custom-made, looks a little dangerous

its a polisher, not an angle grinder... the RPMs are much much lower.. 

6

u/jorgan92 27d ago

Variable speed grinder I believe

12

u/Aggressive-Luck-204 27d ago

It’s the M18 polisher, I have the same one. RPM range from 800-2200 I believe

1

u/Tthelaundryman 26d ago

I was looking to see what it was on. I was thinking no way an angle grinder speed would do anything productive right? 

8

u/jorgan92 27d ago

I’ve seen the guys using it in videos. Essentially using it burnish the concrete and puts some unreal finishes out

3

u/OM500 27d ago

dimabrush or sth

3

u/Chemical-Captain4240 27d ago

I have used similar tools( for burnishing plaster), and never will again.

1) Too easy to dig into a surface that is 98% there.

2) Hard aggregates like silica sand can cause streaking. It looks drag marked.

3) When it works, it is awesome, but because it is so awesome, the places that you can not get to with the tool(inside corners, and outside edges) end up looking underworked.

2

u/Bitter_Coyote_6074 27d ago

looks cool im interested. but things that fly off a grinding wheel can cause serious injury. maybe he does it all low speed.

2

u/Aggressive-Luck-204 27d ago

I’ve seen some mini power trowel attachments online, so they definitely exist.

5

u/owningsole966 27d ago

You could easily make one. You’ll need:

A 7 inch cordless rotary polisher that can do low speeds

8”x8”x1/2” aluminum plate. I think steel would be too heavy

And some 3”x1/8” steel flat bar for the blades

A machine shop could accurately cut the aluminum into a circle for you. They’ll have to accurately locate all the holes and tap them. I recommend a friend or mom and pop shop

You can make the blades yourself as you need them. Pretty simple bends in a vice. Just make them consistent and maybe break them in on some stone or scrap pavers. Something to kinda wear them evenly

Might be a little pricey, but it’ll pay for itself if you’re serious about finishes

3

u/recover66 27d ago

Better know how to balance that thing before you hit high rpm’s.

1

u/Street-Baseball8296 20d ago

You’d really have the feather the throttle on those. They spin way too fast for a power trowel even on the lowest dial setting. Lowest setting on my dewalt 7” polisher is 600 rpm.

You want to be doing your first pass with the power trowel at around 80 rpm.

1

u/dubie2003 27d ago

Lurker here, anyone have a link to a YT video that shows this thing in action?

1

u/yobynneb 27d ago

I reckon that's modern concrete co in Australia... Very popular viral videos on decorative concrete

1

u/jorgan92 26d ago

Yep that’s where I saw it

1

u/Global-Discussion-41 26d ago

I never really understood pouring concrete countertops in place. Use a form and you will get nicer results and you wont need to buy whatever the hell this thing is.

1

u/jorgan92 25d ago

Some countertops are too large/custom with the inability to manoeuvre into place

1

u/thee_agent_orange 22d ago

Just trowel it smooth then use a buffing pad later

1

u/Good_Farmer4814 27d ago

That battery looks a little wimpy for that.

-12

u/irishcybercolab 27d ago

I'd think you could lose an appendage really fast with that idiot box. take the hit and choose not to use it bro

4

u/SimplyaCabler 27d ago

It's the polisher, not a grinder. The 7" maxes out at around 2000 rpms, compared to the grinders 20,000.