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4 1/2 angle grinder question

rlitman

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I’m not sure about your part of the world, but pipeline welders here are self employed contractors. They supply everything but the pipe, from truck to boots.

They’ll spend $25k on a welder to put on a $90,000 pickup. If the more expensive grinders were worth it, they’d have them.
Maybe, but there's one other thing to consider. If they're sporting a torpedo welder like a classic SA-200, the 120V output is likely 120VDC, and that works well with a lot of old school universal motor grinders, but nothing with a slow start or brushless or any electronic features. Mechanical slip clutch is fine.
 
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GaryM909

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I’m not sure about your part of the world, but pipeline welders here are self employed contractors. They supply everything but the pipe, from truck to boots.

They’ll spend $25k on a welder to put on a $90,000 pickup. If the more expensive grinders were worth it, they’d have them.
We had to supply everything. I used to carry four 6" Dewalt or Makita grinders plus two new ones still in boxes along with a die grinder and a 9" Makita. I preferred the older ones without the so called braking system.
I also carried replacement brushes, cold weather cord, and male plugs.
 

tarbellb

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Bosch is not knows for their grinders
Milwaukee skates by with just OK grinders
Dewalt cranks out so many that nobody really knows
Makita is what true cheap bastards buy, they dont break
Metabo was for concrete and mason guys, can take a licking
HF is likely the best dollar value, terrible grinders tho



If you are still using the specialty tool to take on/off the disc you havent grinded enough


Notable features worth looking into

_ cordless, duh
_ anti-kickback for the careless or safety dorks
_ variable speed (for making corners pretty and running cups)
_ auto-brake if you pickup/down all day
_ extra skinny body via Brushless, super comfy onehanded
 

whateg01

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If the switch holds in the on position, as opposed to needing a trigger held down (dead man's switch), I'd upgrade on safety grounds.

Having been present many years ago when someone was using a grinder on the roof, something happened, minor cut to their hand, let go of the grinder and it slid down the roof and dropped down to the ground still on near other people. Not that a different switch is the whole solution to that, but it'd have helped.

Also auto brake as well as improving safety means you can put it down a few seconds earlier after use, don't need to wait for it to spin down.
The guard extends farther than the edge of the flap disc or grinding wheel on all of my dewalts. I don't just drop them, but setting them down so the guard is what bears the weight has never been a problem. If I'm using a cup wheel, I set it upside down if I don't want to wait for it to spin down.
 

neophyte

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Maybe, but there's one other thing to consider. If they're sporting a torpedo welder like a classic SA-200, the 120V output is likely 120VDC, and that works well with a lot of old school universal motor grinders, but nothing with a slow start or brushless or any electronic features. Mechanical slip clutch is fine.
Some of the higher end brands still make angle grinders without the special safety electronics specifically because of the need to run grinders off alternative power supplies.
 

txvwnut

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I have a Black&Decker angle grinder I bought in the 80's and Bosch that I bought about ten years ago. I've already had to rebuild the head in the Bosch while the B&D has been trouble free. I would have no issues using that 30 year old Dewalt.
 

dnschmidt

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I have a Black&Decker angle grinder I bought in the 80's and Bosch that I bought about ten years ago. I've already had to rebuild the head in the Bosch while the B&D has been trouble free. I would have no issues using that 30 year old Dewalt.
Back in the day when Black & Decker Industrial was just about the best power tools you could buy. What SBD has done to slander that name should be a criminal offense. The dark gray B&D Industrial stuff was the ****.
 

liliysdad

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I have three or four yellow 4-1/2s, and a couple of the old B&D gray 4" jobs. All paddle switch, no guards, no side handles. Yes, I am gonna die.. I do have a cordless 20v yellow 4-1/2 that gets the lions share of the casual use, usually with flap wheel.
 

Wamsutta

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Back in the day when Black & Decker Industrial was just about the best power tools you could buy. What SBD has done to slander that name should be a criminal offense. The dark gray B&D Industrial stuff was the ****.
If you're old enough to remember Black&Decker Industrial being a high quality tool, that means you got some serious years on you. 😁
 
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liliysdad

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If you're old enough to remember Black&Decker Industrial being a high quality tool, that means you got some serious years on you. 😁


When I worked for a very large Oil and Gas manufacturing plant in the late 90s and early 2000s, B&D Industrial were the only grinders we had. We started seeing some yellow grinders right before I left. I guess the tool crib must have bought a bunch of the gray ones, because I can remember getting them new in the box from the cage.
 

Wamsutta

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When I worked for a very large Oil and Gas manufacturing plant in the late 90s and early 2000s, B&D Industrial were the only grinders we had. We started seeing some yellow grinders right before I left. I guess the tool crib must have bought a bunch of the gray ones, because I can remember getting them new in the box from the cage.
They had a black and grey corded drill with a bubble level at the end of the motor housing. Very cool.
 

finn

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I have a Black&Decker angle grinder I bought in the 80's and Bosch that I bought about ten years ago. I've already had to rebuild the head in the Bosch while the B&D has been trouble free. I would have no issues using that 30 year old Dewalt.
The eighties are forty five years ago, so I would consider that good service from the Bosch.

SBD pretty much introduced the Dewalt moniker to replace the old standby D&D name as top dog in the power tool pecking order. The B&D name was relegated to kitchen gadgets and low end consumer tools over time.

I never understood the logic behind that move. I have a B&D air impact gun that frankly outperforms my SnapOn, and not by just a little bit bit, but I’m almost ashamed to mention it because of the way people raise their eyebrows when you mention the name.

There’s a B&D 3/4” drill, probably from the forties clamped in one of those drill press contraptions that were once popular. That honker will rip your arm off at the shoulder if the bit catches. Marked my Milwaukee corded Hole Hawg seen like a kindergarten toy.
 

neophyte

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The eighties are forty five years ago, so I would consider that good service from the Bosch.

SBD pretty much introduced the Dewalt moniker to replace the old standby D&D name as top dog in the power tool pecking order. The B&D name was relegated to kitchen gadgets and low end consumer tools over time.

I never understood the logic behind that move. I have a B&D air impact gun that frankly outperforms my SnapOn, and not by just a little bit bit, but I’m almost ashamed to mention it because of the way people raise their eyebrows when you mention the name.

There’s a B&D 3/4” drill, probably from the forties clamped in one of those drill press contraptions that were once popular. That honker will rip your arm off at the shoulder if the bit catches. Marked my Milwaukee corded Hole Hawg seen like a kindergarten toy.
Black & Decker had made cheap power tools for the consumer market at some point, during the same period when B&D was still manufacturing power tools for the Industrial and Professional market under the B&D brand name.
B&D also sold tools around the world.

Some purchasers, including professional tool users, thought they were getting the Professional/Industrial quality tools, when they were actually buying the homeowner grade tools.
The management at B&D decided to purchase Dewalt, which was known for producing heavy duty industrial Radial Arm saws, I guess because the business was for sale.
I’ve read that the purchase was just for the Dewalt brand name, but B&D did have some Black & Decker branded radial arm saws made for the B&D brand by Dewalt, so purchasing Dewalt for the brand name may just be a rumor or theory.
Whatever the actual case was, B&D soon decided to stop manufacturing radial arm saws, and sold the manufacturing facility to the managers, who continued manufacturing the saws under the name “Original Saw”. (Original Saw is still in business manufacturing radial arm saws and other industrial tools, and supplies radial arm saws to stores like Home Depot for lumber cutting).
B&D kept the Dewalt brand name, and started manufacturing the Professional/Industrial line tools under the Dewalt brand, in a black, silver, and Yellow color scheme, while also continuing to manufacture the better B&D tools under “Black & Decker Industrial”, and “Black & Decker Professional” branding.
B&D had also purchased the smaller portable power tool division of the German tool manufacturer Elu, and started manufacturing those tools in Switzerland under the Elu branding, as well as manufacturing B&D Professional/Industrial branded versions of the tools, and Dewalt branded versions of the tools.
There was also a Black & Decker tool line in orange, meant for homeowners.
Eventually, B&D discontinued the B&D Professional/Industrial branding, switching the tool models over to the Dewalt and Elu branding, and then later dropped the Elu branding as well.
Some of the older models are still in production under the Dewalt name, or were until recently.
Some homeowner grade tools then got rebranded as Porter Cable, after B&D bought the porter cable brand.
 

neophyte

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The eighties are forty five years ago, so I would consider that good service from the Bosch.

SBD pretty much introduced the Dewalt moniker to replace the old standby D&D name as top dog in the power tool pecking order. The B&D name was relegated to kitchen gadgets and low end consumer tools over time.

I never understood the logic behind that move. I have a B&D air impact gun that frankly outperforms my SnapOn, and not by just a little bit bit, but I’m almost ashamed to mention it because of the way people raise their eyebrows when you mention the name.

There’s a B&D 3/4” drill, probably from the forties clamped in one of those drill press contraptions that were once popular. That honker will rip your arm off at the shoulder if the bit catches. Marked my Milwaukee corded Hole Hawg seen like a kindergarten toy.
The older all metal Black & Decker drills from pre-WWII, with the drill stands cost a fortune back in the day, probably the equivalent of $2000 or more nowadays.
The drills in the stands were actually used for industrial and professional use, and there are pictures from manufacturers such as Atwater Kent showing the drills in use. (Although maybe an alternative brand like Thor).
 

finn

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Black & Decker had made cheap power tools for the consumer market at some point, during the same period when B&D was still manufacturing power tools for the Industrial and Professional market under the B&D brand name.
B&D also sold tools around the world.

Some purchasers, including professional tool users, thought they were getting the Professional/Industrial quality tools, when they were actually buying the homeowner grade tools.
The management at B&D decided to purchase Dewalt, which was known for producing heavy duty industrial Radial Arm saws, I guess because the business was for sale.
I’ve read that the purchase was just for the Dewalt brand name, but B&D did have some Black & Decker branded radial arm saws made for the B&D brand by Dewalt, so purchasing Dewalt for the brand name may just be a rumor or theory.
Whatever the actual case was, B&D soon decided to stop manufacturing radial arm saws, and sold the manufacturing facility to the managers, who continued manufacturing the saws under the name “Original Saw”. (Original Saw is still in business manufacturing radial arm saws and other industrial tools, and supplies radial arm saws to stores like Home Depot for lumber cutting).
B&D kept the Dewalt brand name, and started manufacturing the Professional/Industrial line tools under the Dewalt brand, in a black, silver, and Yellow color scheme, while also continuing to manufacture the better B&D tools under “Black & Decker Industrial”, and “Black & Decker Professional” branding.
B&D had also purchased the smaller portable power tool division of the German tool manufacturer Elu, and started manufacturing those tools in Switzerland under the Elu branding, as well as manufacturing B&D Professional/Industrial branded versions of the tools, and Dewalt branded versions of the tools.
There was also a Black & Decker tool line in orange, meant for homeowners.
Eventually, B&D discontinued the B&D Professional/Industrial branding, switching the tool models over to the Dewalt and Elu branding, and then later dropped the Elu branding as well.
Some of the older models are still in production under the Dewalt name, or were until recently.
Some homeowner grade tools then got rebranded as Porter Cable, after B&D bought the porter cable brand.
That’s generally how I remember / understand it, but with a LOT more detail than I ever had.

Thanks.

It still makes me cringe when people on this board malign the B&D brand out of hand, never stopping to understand any of the history. There’s a big difference between what it is now and what it once was.
 

neophyte

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That’s generally how I remember / understand it, but with a LOT more detail than I ever had.

Thanks.

It still makes me cringe when people on this board malign the B&D brand out of hand, never stopping to understand any of the history. There’s a big difference between what it is now and what it once was.
B&D is also pretty good at “value engineering”, and also spent decades tweaking the engineering on things like motors to increase power output, including the 3hp router design the purchased from Elu.
Not that they have never screwed up.
 

IndyGarage

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The 1375A sounds like a passenger jet airliner engine spooling up for takeoff.
I don't know the model numbers but I had a couple of those thin barrell Bosch grinders. They were easy to use and relatively tough, but they ran rough as a cobblestone street. I took the head apart and the things had straight cut bevel gears in them. Makita's have proper spiral bevel gears - which are probably 10x as expensive to make, but make the grinder run smooth as glass.
 
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