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Can you recommend a good die grinder brand. I bought a new one and any pressure and it stops.

Thanks
Mike

Dotco

Hi Mike,

Welcome to the Tool Forum!!

Could it be an air supply / pressure problem?? Grinders / die grinders need a lot of air!

I got a cheapo at Northern Tool, have used the heck out of it...does tend to slow down due to air supply..Dotco is good, used those in the aircraft assembly line.

Most die grinders use more air than any other air tool.Mine is impractical for little more than a short burst (ingrisol rand)

Mike try the sears Works good as a hammer as well
They eat up your air supply fast
Maxx

I've been using the Harbor Frieght cheapies for years. Still works.

How 'bout electric? A dremel or rotozip might work depending on what you need it for.

I've got a CP die grinder, picked it up from a used tool store for $15. I cleaned up a 292 head with about 3-5 years ago. The compressor I used at the time was a big one, 2 stage compressor 80 gal tank. The compressor was about the size of a big Harley. The die grinder just screamed cleaning up the head. That compressor isn't available for use, unless I want to travel a 100 mi.. I just cleaned up another 292 head. The compressor I used was one that was given to me, burnt motor. I put a 1hp motor from Harbor Frieght on it. The die grinder starts out good and slowly it downs about 60# on the tank and I back off and look at how things are going. The tank gets back up to about 120# and I go thru the process again. I wore out a Dremel on a set of air cooled VW heads. The Dremel never slowed down unless I pressed hard. Merit sanding disks and little flapper wheels. I tried using the Foredom I've got now to fine tune the work I did on the 292 head. The handle that holds the bit is a little nicer to work with than the dremel. The handle does get pretty warm with prolonged use. I've got well lubed. I need some more bits for, I find them I might take another try at the head. That makes me think of a difference between the dremel and die grinder. The bit shaft 1/8 for the dremel and a 1/4 for the die grinder. I did see a Dotco on that auction site and it had 1/4 and 1/8 collets, I was real tempted.
Larry

You can buy a adapter collet that will make your grinder work on 1\8 in. bits try your local industrial supply.

This is a good buy I pain $15.00 for holder pad for 2 inch roloc
http://cgi.ebay.com/ebaymotors/AIR-...6277QQcategoryZ63693QQrdZ1QQcmdZViewItem
Maxx

I have been told that those little die grinders use more air than just about any other tool.

I don't have air so I use a Dremel rotary saw with a five amp motor. I use a 1/4 collet and carbide grinders for doing detail work on welds. I have to watch the speed because I can burn a tip really easily. It is also a good tool for taking out spot welds that aren't good candidates for the regular cutting tool.

Maxx
I hate to be the bearer of bad news, but take another look at that Ebay ad. It says "central pneumatic". That's the Chinese junk, Harbor Freight sells. Look on their web site and it says $24.95 . That's the kind of thing they put on sale every other week for $17 or even lower.
That's an OK price for a throw away tool.
That one on Ebay was $29.95 plus $10 shipping. $40

It's a rare day you're going to get a good deal on Ebay from a guy that has sold 2004 items there and a big RED star by his rating.

I use Chicago Pnuematic die grinders (one stait and one 90 degree) on a daily basis with no problems. Blue Point is good too. Just make sure
to oil them frequently and have a good compressor to back it up.

I think the key to all these air tools is oiling them often enough. Sometimes they sit in the toolbox drawer for months without use. I oil them just before I put them away. Heck, I use tranny fluid for lub in them.

This just brought up an old memory. I remember when I was back in trade school and we had a air tool demonstration buy some guys trying to get students money for their wonderful and expensive air tools. They asked what kind of oil you should use for air tools. Nobody raised their hands so I did. I told him "the oil recomended by the manufacturer". He gave me a dollar bill. Then all the guys started raising their hands to the questions...but, he didn't hand out any more dollar bills.

I haven't thought about that in 25 or so years.