Jimmy P

iTrader: (177)

I normally use my dremel for light porting work, but decided to buy a disposable air grinder. I ended up with a $25 Kawaski grinder. I hooked it up to my 25 gallon compressor. The grinder needs at least 90psi per the manual. I think my compressors regulator is set to around 95psi or so.
Initial thoughts is that it doesn't feel very variable. Its more like an On/Off switch(almost). I need to really focus not too press too hard or it goes full speed. Is that because I bought such a cheap air grinder? Anyway to slow it down?

studderin

iTrader: (28)

humm even the cheap grinders I have a variable?

thats a small compressor for porting, but what every you were doing with a dremal wasnt much anyway

garygnu

up the regulator setting to 100 PSI or get a bigger compressor .

67RSCamaroVette

iTrader: (63)

All of the die grinders are touchy, you have to get a feel for it. After several hours of using it, you'll be a natural. I use solely Harbor Freight ones.. my Snap-On die grinder stays in the box for the most part.

Silverback

Funny, I like my HF ones better than my IR ones...

kevindglenn

You'll definitely want to test it out/practice with it on a piece of scrap before you get to the real project.

Doug G

Use a needle valve at the tool to adjust pressure

http://www.amazon.com/Parker-MFP-309.../dp/B002SR7S5I

Beebe

I hate air grinders for consistancy..............too much up and down rpm / speed

Silverback

most that use them for porting set a maximum pressure on the air line and then pulse them when running the cutter, if you run them at a constant high rpm they just melt the aluminum and clog up...

3YLSYKR

iTrader: (2)

Careful with it, lots of power haha.

67RSCamaroVette

iTrader: (63)

A bar of soap or wax nearby, and a cup of muriatic acid are a carbide's best friends. Wax keeps the buildup out, muriatic acid eats the aluminum off the blades like a fat kid sucking butter off corn, and the carbide could care less.