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Pete C.

wrote:

On Sun, 23 Mar 2008 23:24:17 -0400, "MiamiCuse"
wrote:

I bought a 4-1/2" angle grinder from Harbor Freight, I don't have much
grinding to do so I just wanted to get a cheap one and use it for this
project which requires grinding off a few door hinges that has been set into
metal door jambs that extended into the slab. The grinder came with metal
disc but I also need to make some cuts in concrete so I went and got a
4-1/2" diamond blade from the big box store only to find that those discs do
not fit...apparently the metal grinding disc that came with it has a
depressed center so that the locking nut can be secured from the outside.
If I put in a flat disc there is not enough room for the lock to catch -
well even if there was I am not sure it's a good idea as the lock may break
the thin disc.

I have never used this type of grinder before does it mean I need a special
depressed center diamond cutting blade or do I need a special fitting to use
standard blades?

Thanks,

MC

If you bought it at Harbor Freight (Harbor Fright), I'd toss it in the
garbage before it kills you or causes a serious injury. Even if it
does work and you are lucky enough not to get hurt, it will burn up
after a few hours of use. Harbor Freight only sells one thing....
GARBAGE.

Wrong, and anyone who believes that is missing out on some very good
deals. HF certainly does carry some stuff that is indeed garbage, but
there are a number of gems in their lineup as well. Having a HF store
nearby where you can inspect the items in person is a big help in
finding those gems. It's been reported by many knowledgeable folks that
the HF orange 4.5" AG lasts many years under frequent use. The blue line
has mediocre reviews. As for the disk issues, try reviewing the manual
for info and if you can't find good info there try looking at the
manuals online for the brand name angle grinders that might have better
instructions.