Bosch Concrete Grinder/Surfacer

[ColdBlackWind]

I have a ton of leveling to do. Is this tool rugged enough for extended use? Does the dust shroud capture most of the dust? I just fried a 10 amp Ridgid grinder using a cupped wheel. I think it ate too much dust. Any comments or notes from folks that own and have used this tool would be greatly appreciated. Part number is 1773AK.

 

[LegacyIndustrial]

ColdBlackWind: Using a cup-wheel to level a floor creates a ton of drag, causing the grinder to draw more amps and speeding up the degradation process of the motor.

Consider using a Diamabrush hand tool or perhaps look at using a "planer". Planers can remove a bunch of concrete material fast. When done you can feather it out with your hand-grinder.

If it has to be a hand-grinder buy a 7" model from Harbor Freight, brushes can be replaced and if it blows, throw it out and buy another. We use them and they work great.

Good luck!

 

[ColdBlackWind]

Thank you sir. I am working in an area right now that is Really close to finished rooms and I hate to use a scarifier. I will try the HF grinder. I have a dandy 7"
cup wheel and was moving along well until the grinder puked. Going to use sacrifier on the big area. Will be in touch with you once I get the high spots down and start filling lows. YOu did say the epoxy that you add sand to likes a hard edge instead of feathering, correct?

 

[LegacyIndustrial]

In heavy duty load areas with "steel wheeled traffic" we prefer a no feather install.
For a garage where you will coat the floor with epoxy feathering is acceptable.

It is at full strength from 1/4" up. Strength is less, although still high compared to concrete, when installed less than 1/4".

 

[ColdBlackWind]

Well the two HF 7" grinders came in today. I also bought a "dustie" shroud to attach a vacuum. Mounted the shroud and 7" cup wheel and commenced to grind down a high spot. Great dust capture and removal rate was great for about 5 minutes and then the HF grinder went up in smoke. Even at $45 per unit that will get expensive since I covered about 2 Square feet!! Any other suggestions? I have to remove about 1/4" of material in a 6 square foot area.

 

[LegacyIndustrial]

Try grinding from the top down vs. taking the entire 1/4" at once.
HF will likely exchange the grinder, can't hurt.

 

[Shea]

removal rate was great for about 5 minutes and then the HF grinder went up in smoke.

Wow... Are you leaning in on it when grinding? It doesn't require a lot of pressure to grind the concrete. It will go a little quicker over high spots if leaning it on it but that can burn up the best of grinders if you do that for too long.

 

[ColdBlackWind]

Was using a sweeping motion like you would buff a car. Using some pressure on the wheel. Thinking the 7" wheel is just too much for the grinders to swing. Going to try a 5". This *****.