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die grinders

M

Moondoggie

Member
I"m looking a die grinder. For tractor work, are they useful for removing rust and paint? Is there an advantage to an angle grinder versus a straight grinder? Are the expensive ones really worth the extra $s for occasional work? I"m using a compressor with 6.0cfm at 90 psi. Is that powerful enough?
 
I bought a so so elec one from home depot, works good, I like using the small wire brushes for removing rust and scale from the 0 ring seating area of a wet sleeved engine. Not sure how much air it takes to run one like you're wanting.
 
I buy the cheap Harbor Freight ones. Have three or ,t be but four of the nine dollar ones. Keep disk cutter, wire wheel and die cutters in one all time. Shoot a little air oil in them ever now and then and they will give good service.
 
The only 90* angle die grinder I ever used (at work) was a cheapie, and wasn't worth the price of the plastic bag it came in. Stick with straight shaft. My $.02. Dale
 
We have both the air and the electric die grinders. Our electric grinder is from Harbor Freight (around $19), we have had it around three years and have used it a lot. It just keeps on running so I can't imagine being without it. It is very powerful. My air grinder hasn't had much use since I got the electric one.
Happy shopping!!!
 
The more expensive ones tend to use a little less air. Great for cutting and grinding. Be careful v with wire brush. Most are not rated for 20,000 rpm. Wear glasses. Have both, angle and straight. Each have places they won't fit. 3 scotch brite set up works great for gasket and light rust removal.
 
I have 3 and they easily are the most used tool in the shop. I use the angle ones the most. The go to seems to be the Lawson products 1 that was by far the most expensive. I have sander discs, cutting discs, grind stones, sander wheels, buffer wheels, & boring tools just to name a few of the accessories. They will use some air but not unreasonable. I would not be without them.
 
I might add try to avoid putting a wire brush in an air die grinder. It spins the brush so fast the wires that fly out of the brush are like pins and needles flying at warp speed. Very dangerous. One of them would probably go clear through your eyeball and keep going. Jim
 
I have one of the angle jobs from HF and used it professionally with no problems as long as I lubricate it on occasion. Great for gasket, paint or rust removal with the scotch brite pads. Just make sure you wear eye, ear, and particularly breathing protection (most of the dust you make is toxic). If you want to use it for abrasive wheel cutting or grinding stone work get the straight one.

Jim
 
The angled die grinder are handy when used with the Roloc disc. They are a system of a mandrel and many types of sanding or polishing discs that screw on to the mandrel for quick and easy change without keeping two or more grinders near by.
 
I'm with dahlin, get an electric. They don'get cold, and you don't need to have your big compressor nearby.
 
Your compressor isnt big enough and they arent the tool for removing rust. The wirebrushes available wont last long at the rpms the air tool operates.
 
I think you may want a 4 inch disc sander/grinder. Not too fast for wire wheels and takes sanding discs plus cut off discs.On a cord not air.
 
They are good for some things but do not have a lot of torque. Easy to overload, but I use them a lot with cut off wheel, ScotchBrite, small sanding drum etc.

Harbor Freight has an electric one on sale for $19.95-I may try one of those. I think it is an electric cut off tool,probably cheaply made and short life. But then again, I have low expectations, so I am rarely disappointed!

Garry
 
Agree on the wire brushes.. Had one to explode years ago, in a air grinder. Years later, I still had bits of wire coming out of my belly..
 
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