Small Surface Gringer

R

R S Rogers

Joined
Dec 27, 1998
Messages
9
Hi guys,

I just got a small table top surface grinder. Does anybody else have one? What do you use for coolant while grinding steel? The table isn't set up for a flood coolant system.

Thanks!
 
Most small surface grinders don't need coolant, just take off .001 at a time and you will be fine. Make sure the wheel is kept dressed and it will cut nice and clean.
 
I have had one of the Chinese benchtop grinders for many years. Cooling is a problem, and steel warpage from just one or two passes can be a royal pain, the steel pulling off the mag chuck from stresses building. Especially mill-rolled barstock. Forge scale clogs the stones quickly.. knock it off with an angle grinder first.

There are cooling systems out there that will help. One utilizes water mist so you don't build up alot of wet. Another uses air, utilizing the principle that forcing a gas through a small orifice causes it to cool.
No experience with either one, but they're available from MSC.

One must turn bar stock over frequently to keep streses even, and without cooling the bites are limited to about 1-2 thou. Aside from that, these are surprisingly good surface grinders for the bucks. I replaced the funky three-rod main handle with an extended wheel-type; it makes it alot easier.
 
Thanks for the responses. I'll probably try koolmist. It's the small surface grinder from MSC. I traded a knife for it. I got it set up (levelled, chuck mounted and ground) today. I'll see what kind of job it does tomorrow.

Take care,

Richard
 
Another trick to keep the steel from lifting up off of the chuck is to put it on it an an angle. Doing this helps because you are touching a smaller surface area with the wheel during each pass. It has less surface areto to try to "grab".
 
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