|02-10-2012 01:19 AM|
this thread is funny, but like everyone else said, safety first! I wear a hat and safety glasses even with a face shield.
I use a 3" cutoff air tool for smaller things, I mainly use 4.5" harbor freight grinders with good wheels. the hf wheels shatter and explode regularly where the good ones actually wear out over time. I also have a 7" hf grinder that I use to knock down frame welds, thick material shaping, edge bevels, etc. to save wear on the 4.5" thats usually set up with a cutting disc anyway. the only good thing about the hf grinders, the hf store is only 2 miles from my shop.
|02-10-2012 12:03 AM|
These are expensive, but you get what you pay for:
|02-09-2012 07:10 PM|
|02-09-2012 08:27 AM|
|02-09-2012 08:14 AM|
This is probably beyond the scope of the conversation, but I'm getting ready to cut several 4" strips of the 38" wide X 5 rib steel roofing to cure a contractors mistake (he laid the roof panels too high, causing rain to run down the inside wall of my $50K building). I plan on using a 10" abrasive metal blade on either my Table Saw or Radial Arm Saw to do the cutting. I've tried cutting this stuff with smaller (7" Dia X 1/4" thick) blades, and it seemingly took all day just to make one cut! With 60' of material needed to fix the roof, and winter coming on, I want to get it done quickly! the blade I intend to use is 10" X1/8" for $4.79 @ Lowes.
And Yes, I'm going to move the saw outside, wear my welding helmet, a fireman's bunker coat, Welding gloves, combat boots; have a garden hose, and 2 fire extinguishers (type A & Type BC) and an air pack available, with my guardian angel on a 1/2 second response time status, I think I should be able to handle the task.
|02-07-2012 07:10 PM|
I have a Milwaukee die grinder (electric) and not the one shown in post #6. Mine is smaller and less expensive. About $130.00. With a toggle switch (don't like the paddle switch), about 20,000 RPM. I use 3&4" x .035. I can easily fallow a scribed line.
Silicone caulk has it's place, but not every place.
|02-07-2012 05:00 PM|
|02-07-2012 12:27 PM|
has anyone seen a 4" angle grinder thats cordless..
sometimes the cordless sawsall is just not the ticket at the junkyard crawl..
|02-07-2012 11:28 AM|
I use small 3" wheels in my battery powered DeWalt DC550B cutoff tool. I also use rotary files in it to open up holes. The DeWalt is really a handy tool for quick work and no cord to drag out. The 550B uses either 1/4" or 1/8" collets, so it's versatile and easy to use.
I have a Foredom K.2272 tool with a 4' flexible drive to use with small wheels like a Dremel, but it has more power and the flexible shat allows me to get into really tight places and leave the drive motor out of the working area. I usually keep it hanging above my work bench with the drive cable down to keep it handy, and it gets more bench use than portable use, but when I need something really small it's the best. They're about $330 now, but well worth every penny.
|02-02-2012 03:03 AM|
I have used many different brands of cut off disc in a 4 1/2" grinder working as a Union Pipefitter.
The Walter Zip or Zip + is hands down the best cut off disc I have used.
They are directional,so mount them with the arrow pointing in the direction of ratation and they even last longer than is incorrectly installed, LOL.
$3.25 a disc but worth every penny.
If you do a lot of cutting, get a larger guard for your grinder and use the 6 inch discs, you will get a lot more feet of cut per dollar spent.
|01-28-2012 12:36 AM|
Anyone used rotozip RFS1000?
Looks like a proper cutting only tool.
|01-26-2012 08:35 AM|
at this time, I am using the dewalt 4.5" cut off discs I bought them at lowes in a "bulk contractors pack" and they were pretty cheap, and hold up very well
I also bought a couple of 6" which work well for cutting multiple layers( i.e. when I cut off my rockers)
last time I was there they had some taskforce 4.5" grinders on clearance for $20 , and I think i'm going to go back and get one
that way I can just leave that one with the cut-off wheel on it
and use/save my other one for grinding and wire wheels
is anybody using one of these taskforce brand tools?
|01-26-2012 08:18 AM|
For a Dremel sized electric tool, I use a Ryobi HT20VS or a Dremel MultiPro and neither have given me any problems (I don't know if either are still being made). For bigger work I use either pnumatic tools (various die/angle grinders, saws, etc.) or for an electric tool I use a Rotozip w/various blades or bits as required, or a Craftsman 1/4" electric die grinder- but it's a handful if there's a lot of work to do, plus it gets hot in your hand.
If you've not tried the fiber reinforced Dremel cutoff wheels (456 and 426 or clones), you should. They're far more durable than the thin emery-type discs that shatter at a glance. Clones are really just as good, at least the ones I've used, and cost far less than Dremel brand discs.
|01-26-2012 07:46 AM|
cut off tools
Been doing metal work about 35 years 4.5 are the best tool for the job like the man says ,but be careful had a frend that had a cut weel/wafer blade blow apart cost him 30 stiches in his arm its best to wear full sleaves and thick welding gloves .I put on an old weld ing hood with clear linse to be safe / check the RPM raiting on the blades and tool,
|01-26-2012 07:12 AM|
HF has a new 3" cutoff tool that looks to use the same motor as the 4.5" grinders. $30ish usually, but I prefer the 4.5" grinders with a cutoff wheel.
As dave said, use good wheels. I blew up ONE HF chop saw wheel. I now use Norton or DeWalt wheels on everything, and they wear without getting damaged, until there just too small to work.. I used to use the HF cutting wheels for 4" grinders until I went up to a 4.5" grinder and wheels with the 5/8" shaft are more common
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