BENCH GRINDERS..

[locOleoN]

There are so many FREAKIN kinds of Bench Grinders out there...
Which brand are you guys using?...
6 inch vs. 8 inch.....

Which brand of wire wheel doens't shoot out their stupid wire???

 

[Tim]

8 inches of course.

 

[CanadaDan]

Amp/HP/Torque ratings are what you want to look at... too many budget models will simply stop when enough preasure is applied... or they overload and trip the circuit breaker (done this many times with my buffing machine at work)

My best one is an old ~3400rpm Craftsman with only 1/3 hp... but at 6.2 amp I've yet to have a problem with it. The only issue is no electrc brake and GREAT bearings... it spins for a few minutes after I shut it off, I have to be really carefull working around it after grinding something

 

[locOleoN]

Amp/HP/Torque ratings are what you want to look at... too many budget models will simply stop when enough preasure is applied... or they overload and trip the circuit breaker (done this many times with my buffing machine at work)

My best one is an old ~3400rpm Craftsman with only 1/3 hp... but at 6.2 amp I've yet to have a problem with it. The only issue is no electrc brake and GREAT bearings... it spins for a few minutes after I shut it off, I have to be really carefull working around it after grinding something

I was thinking of putting a wire wheel on one side and a buffing pad on the other side.. So there will be no real grinding done...

 

[Scarcat]

I've got the same one as CanadaDan. They do make two versions - 8" and 6". I've got the 8".

The larger the wheel, the faster the edge of the circumference of the wheel moves.
An 8" wheel rotating at 3,400 RPM on a bench grinder goes about 81MPH
A 8" wheel rotating at 3,400 RPM on a bench grinder goes about 60MPH

Ny favourite ...
A 4" wheel rotating at 10,000 RPM on an angle grinder goes about 119MPH

To calculate:
Circumference = Pi X Diameter
Inches/minute = Circumference X RPM
Inches/Hour = Inches/Minute X 60
MPH = Inches/hour / Inches in a mile (or 63,360 inches in a mile)

 

[Shooter]

Big diameter with powerful motor definitely required for buffing work. My small 6" grinder with wire wheel did a lot of hard work but sometimes it was hard to get an angle on a part due to small wheel diameter.

Wire fling from bench grinders is a major hazard - where safety glasses.

I also found buffing and grinding for many hours had a detrimental effect on the skin on my face and irritated my eyes. Hard to avoid so I tried to off set my head position as much as possible.

Possible solution I just thought about - a plexiglass shield on a flexible arm.

 

[saucer]

Big diameter with powerful motor definitely required for buffing work. My small 6" grinder with wire wheel did a lot of hard work but sometimes it was hard to get an angle on a part due to small wheel diameter.

Wire fling from bench grinders is a major hazard - where safety glasses.

I also found buffing and grinding for many hours had a detrimental effect on the skin on my face and irritated my eyes. Hard to avoid so I tried to off set my head position as much as possible.

Possible solution I just thought about - a plexiglass shield on a flexible arm.

i also found long hours of buffing cause a headache, from the aluminum dust, so lately i wear a respirator, goggles and hat, i'm buying coveralls, and gloves,but look at what i've done in a few days, with a $35 grinder,i'll need shades come this spring from the glare,

 

[DrJ]

Nice bling. But after breathing in all that aluminum dust you are now a prime candidate for Alzheimer's. So if you start forgetting things you know what to blame.

 

[HerrDeacon]

Wow, nice work. What kind of polish did you use?

 

[saucer]

Wow, nice work. What kind of polish did you use?

hey thanks, first i used a wire wheel to remove paint, then 400 grit sandpaper, then 600 grit, blk polishing compound, then red, now i gotta seal it, the surface is so fine that moving my finger over it will leave fine scratch marks,apparently now i have Alzheimer,