Thread: Buffing machine question!

Hi folks!

I have the opportunity to get my hands on a grinding machine for quite low money. The machine looks OK, little bit old, but functioning without any glitch. I was thinking of getting cotton wheels to attach them to it and have a buffing machine (which in Spain are quite difficult/expensive to get) and save me from buffing with my Dremel.

The grinder uses 150mm diameter wheels and spins at 2800rpm. I am unsure if that grinder would suit as a buffing machine, as I suspect 2800rpm is quite high.

My question is: Should I get it because even though 2800rpm is high, I still can use it as a buffer? Or should I discard it because 2800rpm is way too high?

Thanks a lot!!

Speed sounds ok to me.

E.g. Polijstwinkel - Polijstmahine Type 8

It's in Dutch but you'll surely notice the 2.850 rpm
Do also get some sissal though ...

2800rpm is a little high..but..so long as you stick to 150mm or less wheels, you'll be alright.

Its on the high end of the acceptable feet per minute I feel comfortable working with.

Oh yeah, I once planned on getting a bench grinder like that for little money.
The problem is that the 15mm wheels are just too big for the full hollows and I couldn't find smaller wheels.
They're OK for half hollows or wedges, though.

Some buffer math for you to read

http://straightrazorpalace.com/works...der-speed.html

Personally I use 3650 rpm but 4 inch or 100mm wheels
The smaller wheels make it very easy to get into the hollows like Leon pointed out...

Heat Build up is always the enemy here just keep away from the heat and your good...

I go from 1800 to 3600 RPM on my buffer, which has way more torque than your grinder, with a 4" wheel for the greaseless and 6" for my rouges . So the 2800 RPM is definitely good to use with the right sized wheels. Wear your safety goggles and dust mask at all times. Watch those fingers and heating up of the blade.