How do I choose angle grinder?
Moderator: Moderators
- ayjay
- Senior Member
- Posts: 9891
- Joined: Wed Nov 17, 2010 5:51 pm
- Has thanked: 458 times
- Been thanked: 1708 times
Re: How do I choose angle grinder?
Horses for courses: what do you plan to do with it?Jumanji95 wrote:Larger disc ones seem to be high power and low rpm
Smaller discs the opposite- how do I decide please?
A 9" angle grinder is a bit of a beast to control compared to a 4", which is all I've ever needed as a chippy.
One day it will all be firewood.
- big-all
- Pro Carpenter
- Posts: 23420
- Joined: Sat Dec 16, 2006 10:11 pm
- Location: redhill surrey an auld reekie laddie
- Has thanked: 731 times
- Been thanked: 2303 times
Re: How do I choose angle grinder?
pi R Squared means the outer edge goes 3 times the speed so a 4" disc will go 3 times the speed so higher rotation wont be a problem
where as a 9" disc needs to rotate perhaps 60% slower to give the same cutting edge speed
where as a 9" disc needs to rotate perhaps 60% slower to give the same cutting edge speed
we are all ------------------still learning
-
- Senior Member
- Posts: 6055
- Joined: Mon Jan 16, 2006 8:16 pm
- Location: Somerset
- Has thanked: 77 times
- Been thanked: 335 times
Re: How do I choose angle grinder?
What do you want one for...?
[size=100][color=green][b]Why isn't the number 11 pronounced onety one? [/b][/color][/size]
-
- Newly registered Member
- Posts: 35
- Joined: Tue Dec 26, 2017 10:56 am
- Has thanked: 49 times
- Been thanked: 0
Re: How do I choose angle grinder?
I want one for various stuff- cutting wood,metal, various diy for my project motorcycles. Sometimes I grind away the rivet on the masterlink of a motorcycle chain, so that it can come undone and a new chain put on. Grind away the head of stripped screws so they can pop out. Grind away flaky very sticky rust on exhaust headers with a wire wheel.
Cut off the exhaust catalytic converter from the main exhaust and attach a new tube with exhaust clamp (can't weld yet nor do I have equipment- totally new to diy) so that the exhaust can sound obscenely loud when engine running :) etcetera etcetera. No big DIY stuff for the home. Most of my work is for cars and bikes.
Cut off the exhaust catalytic converter from the main exhaust and attach a new tube with exhaust clamp (can't weld yet nor do I have equipment- totally new to diy) so that the exhaust can sound obscenely loud when engine running :) etcetera etcetera. No big DIY stuff for the home. Most of my work is for cars and bikes.
-
- Senior Member
- Posts: 4661
- Joined: Sun Jan 31, 2010 9:21 pm
- Location: Kent, Land of Apples and PYO
- Has thanked: 94 times
- Been thanked: 857 times
Re: How do I choose angle grinder?
A good 4" grinder will do, you don't use a grinder for cutting wood unless you like clouds of wood smoke, For rust removal or cleaning use a flap disk
Whats you budget ? they range from £30 up into the £100's
Whats you budget ? they range from £30 up into the £100's
-
- Senior Member
- Posts: 6055
- Joined: Mon Jan 16, 2006 8:16 pm
- Location: Somerset
- Has thanked: 77 times
- Been thanked: 335 times
Re: How do I choose angle grinder?
So you deffinately want a 4.5" or 5" one then. 5" tend to be the more industrial end of things, 4.5" or 115mm is the norm for DIY type ones.
I'd steer clear of the very cheap (Lidl/Challenge etc) and buy a branded one. They tend to be much smoother running and less vibration. You could pick up a basic Blue Bosch or Hitachi for under £40.
I use grinders a lot, they are the only two brands that last us in the workshop. (although the more industrial models)
Get yourself some reasonable discs too, cheapo ones are a false economy, and just plain nasty to use.
Norton, 3M, Flexovit, Klingspor are all good brands that are easily gotten hold of.
A flap disc is handy for lighter duty deburring, and cleaning up. The thin 1mm cutting discs are fantastic, just dont force them or put side loads on them.
I'd steer clear of the very cheap (Lidl/Challenge etc) and buy a branded one. They tend to be much smoother running and less vibration. You could pick up a basic Blue Bosch or Hitachi for under £40.
I use grinders a lot, they are the only two brands that last us in the workshop. (although the more industrial models)
Get yourself some reasonable discs too, cheapo ones are a false economy, and just plain nasty to use.
Norton, 3M, Flexovit, Klingspor are all good brands that are easily gotten hold of.
A flap disc is handy for lighter duty deburring, and cleaning up. The thin 1mm cutting discs are fantastic, just dont force them or put side loads on them.
- These users thanked the author Hitch for the post (total 3):
- Job and Knock • Bob225 • Jumanji95
- Rating: 21.43%
[size=100][color=green][b]Why isn't the number 11 pronounced onety one? [/b][/color][/size]
-
- Senior Member
- Posts: 4661
- Joined: Sun Jan 31, 2010 9:21 pm
- Location: Kent, Land of Apples and PYO
- Has thanked: 94 times
- Been thanked: 857 times
Re: How do I choose angle grinder?
Don't forget a pair goggles, glasses or face shield and a pair of decent gloves - ear plugs or ear defenders are a must tooo
There called death wheels for a reason.
There called death wheels for a reason.