Blockwork half course & '100mm' blocks

[Ivor Windybottom]

It's a saw for cutting things off, i.e. any saw.

Don't think you saw masonry anyway, definitely more of a grinding process. Unless you're chiselling, but that's something that never works for me. I hit it precisely where I want to cut, and it shatters into several random jagged pieces.

Wet grinding can be messier than dry. You don't get the airborne dust neighbour annoyance but you'll have goo all over the place.

 

[noseall]

I'm not really sure what I could do to make it clearer; reread my post - I said:

A cut off saw with water suppression.

Except that no one in the building trade has the faintest idea what a cut off saw is.

 

[robinbanks]

A Stihl saw.. Picture in post #24 (for avoidance of doubt, because Stihl make various different kinds of saw)

 

[robinbanks]

You could have just agreed with Mr Windy’s original post

I could have, and would have if it was in any way relevant to what I'd posted but he rather wandered off on his own emotive tangent very early on..

Here's a précis of the conversation:

Ivor: cut it with a 240v angle grinder
OP: omg the dust
Robin: cut it with a wet-cutting saw
Ivor: people don't have wet saws, they have 240v angle grinders
Ivor: omg, dangerous terrible advice to even suggest pouring water on a 240v angle grinder

At this point Ivor isn't even certain that the OP owns an angle grinder, he's just gone into some sort of conflated thinking where cutting the blocks with a grinder is what he would do, so it's what the OP is going do, and I've mentioned wet cuts so he's jumped on the opportunity to patronise grown adults about mixing electricity and water :roll eyes:

Don't think you saw masonry anyway, definitely more of a grinding process.

In definition terms, sawing / cutting is an operation that generates two pieces from one. Grinding is an operation that generates one result from one input item, plus a load of tiny fragments. You might cut or grind masonry; start with a large block of granite and saw a 30mm slice off it, then use grinding operations to give it a surface finish. This generates a kitchen worktop through use of both cutting and grinding processes. That a cutting wheel is an abrasive disc doesn't make it a grinding operation

 

[kingandy2nd]

I could have, and would have if it was in any way relevant to what I'd posted but he rather wandered off on his own emotive tangent very early on..

Here's a précis of the conversation:

Ivor: cut it with a 240v angle grinder
OP: omg the dust
Robin: cut it with a wet-cutting saw
Ivor: people don't have wet saws, they have 240v angle grinders
Ivor: omg, dangerous terrible advice to even suggest pouring water on a 240v angle grinder

At this point Ivor isn't even certain that the OP owns an angle grinder, he's just gone into some sort of conflated thinking where cutting the blocks with a grinder is what he would do, so it's what the OP is going do, and I've mentioned wet cuts so he's jumped on the opportunity to patronise grown adults about mixing electricity and water :roll eyes:


In definition terms, sawing / cutting is an operation that generates two pieces from one. Grinding is an operation that generates one result from one input item, plus a load of tiny fragments. You might cut or grind masonry; start with a large block of granite and saw a 30mm slice off it, then use grinding operations to give it a surface finish. This generates a kitchen worktop through use of both cutting and grinding processes. That a cutting wheel is an abrasive disc doesn't make it a grinding operation

Give it up dude. Your original post was not as clear as you seem to think it was.

I’ve never seen a disc cutter/cut off saw/grinder that is/was suitable for wet cutting not have a hose attachment.

Suggesting wetting blocks directly just leaves a risk that someone could do just that with an unsuitable cutter or grinder.

 

[robinbanks]

I’ve never seen

Do you mean to imply then, that because you haven't seen it, it doesn't exist?

 

[kingandy2nd]

Do you mean to imply then, that because you haven't seen it, it doesn't exist?

Still going eh?

No. I said I’d never seen one. Probably back in the old days before universal/hozelock-style fittings you could buy petrol cutters without one.

You were keen to post up examples of electric wet cutters earlier in the thread, please feel free to spending your Sunday searching the internet for petrol cutters without hose fittings just so that you can prove me wrong.

 

[robinbanks]

Still going eh?

Well, it takes two to tango eh?

Probably back in the old days before universal/hozelock-style fittings you could buy petrol cutters without one.

You're absolutely right

Please feel free to spending your Sunday searching the internet

I faithfully promise it didn't take long:

There is no way the user of this saw will suffer death by electrocution, cutting a concrete block with a hosepipe running water over the block, unless perhaps they happen to have dug a trench to find their electricity supply line and are using it as a rest

The generated dust will indeed be a small amount of goo on the floor, a better place for it than in the lungs of the user and the kids playing in the garden next door. Wet cutting is not a faff; it's no more difficult to run a hose to a location than running an extension lead to plug in a drill

Next time someone makes a point abundantly clear by calling something by its correct name when it is what they mean, and you don't understand what that thing is, don't assume what it is they're talking about; ask them. That you didn't find their point clear, is not automatically their fault- they did all they felt necessary then handed it over to your understanding. If some back and forth needs to happen to achieve same page, it's not a problem, but jumping in with patronising nonsense based on a misunderstanding is unhelpful

 

[Deluks]

Surely all saws are cut off saws?

 

[robinbanks]

Language is a funny thing.. Jigsaws aren't necessarily saws, and seesaws definitely aren't. Plenty of saws reciprocate but only a recip saw is a recip saw, you don't use a hacksaw in a hacking motion and a chop saw doesn't have any lamb in it

 

[kingandy2nd]

Yep, found one from the ark

Safe to say nearly all wet cutters have a hose attachment.

You keep clinging to your notion that your original post is accurate for some vague / remote situation. It’s not at all relevant to the OP’s situation. I’m embarrassed for you.

 

[i_am_fubar]

Okayyyyy.... Wasn't expecting this to still be going. Main takeaway aways are - cut blocks if I need to. But dolly/soap blocks are hard to come by.

For reference, I have a 12" 230v grinder and a diamond blade. I don't mind cutting a few small cuts (design is such to minimise cut blocks) but doing 20 odd along the length is a lot. May use commons and just accept the dimensional step from my otherwise flat walls

Thanks all

 

[Ivor Windybottom]

Yeah. Apologies for the sadly frequent forum emotions being flounced about on here. Yes, don't get a hosepipe anywhere near your grinder!

I have exactly the same grinder. Cheap rubbish but does the job. Don't rule out chopping 20 blocks, it's not a big deal. You just need a wooden block or board, then nail a batten along one edge, so you can put your block on it and it won't get twanged across the garden. Add an end stop batten, then cut a notch either side of the block where your cut needs to be, then you don't even need to mark them up.

I'm about to chop about 50 bricks into accurate half-bricks, which sadly involves two cuts per brick to ensure their length is slightly less than their width. It's definitely not a nice job but doesn't actually take that long. There will be a spray stripe across the garden after but it's not a big deal.

If your diamond blade has a few miles on it then buy a new one. They get slower over time, at a rate that you barely notice until you buy a new one.

 

[Sadia202]

A cut off saw with water suppression.




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