Cutting Hardi Backer

[Kyle Knowles]

Usually if my sigma is on the job I cut my hardi with that it's quick easy and accurate or if not I scribe it a million times and snap it but having just treated my self to a bosch GAS 35 AFC M I was wondering has anyone used one of them fancy blades in a circular saw attached to the dust extractor cut the hardi ?

 

[widler]

I use my grinder with a old blade in

 

[White Room]

I use a hardie knife, no dust to speak of.

 

[Kyle Knowles]

The old grinder makes a he'll of a dust cloud and covers u in dust I've tried that before and I'm trying to avoid the dust as much as I can that silica dust is lethal

 

[Kyle Knowles]

Silica is the second biggest killer behind asbestos so be very careful with hardi

 

[Old Mod]

I use one of these!

 

[Kyle Knowles]

I use a similar one but no eye protection by 3M

 

[Old Mod]

That puts 140/160ltr fresh air thro mask in a minute.
With bump cap and anti impact visor with tear off strips.

 

[Kyle Knowles]

Ohh now I've just looked them up and it's far better than mine where did u buy it from and what's the price tag ?

 

[Old Mod]

Respirators

 

[Kyle Knowles]

I've made a shortcut to my home screen gonna have to get myself one of those beauties at some point

 

[Stef]

Cut outside with the grinder with the dust blowing away from you.
You don't have to cut right through the Hardie, a quick score with the grinder & snap it, a lot quicker than using the knife.

 

[widler]

You joking, the dust is bad for you , sugar, I will cut outside from now on I always wondered why the customer always complained about all the dust in her front room while I was cutting inside god dam, why didn't I think of that

 

[Stef]

You joking, the dust is bad for you , sugar, I will cut outside from now on I always wondered why the customer always complained about all the dust in her front room while I was cutting inside god dam, why didn't I think of that

Seen Tilers using a grinder indoors..

 

[widler]

I would of the house was empty , not hardie , but to cut tiles , especially if it was raining

 

[Kyle Knowles]

Lol u mad man that's what wet cutters are for

 

[Flintstone]

I've cut tiles with the grinder indoor before, when there is a spare room to work in that's not decorated etc, also when customer wasn't in. I always use little ear plugs.
I use no more ply which is same as hardie, just score with knife and snap, or use hand saw for l shape cuts etc. I wear a 3m disposable mask.

 

[Ian]

Handy tip for 6mm hardie/nmp, for little cuts like the ones around architrave or any fiddly L cuts, just use your tile nibblers.

 

[Flintstone]

Yeah I do that also. I think nmp recommend that as well

 

[Two-Trowels]

I've cut Hardie indoors with a grinder before, just held a damp sponge carefully against the blade during the cut - little or no dust to speak of.

 

[Kyle Knowles]

So no one uses a hardi blade in a circular saw to cut hardi ?

 

[macten]

For awkward little cuts I just use my plasplugs table saw. Easy cuts then score and snap.

 

[MTiler]

I just use one of these with nippers, why on earth would you need to use a cutter or blade? No dust.

 

[widler]

The thick stuff Sharon, tis a mare to cut with a hardie knife

 

[Old Mod]

@Kyle Knowles just a point worth remembering Kyle,
The visors are polycarbonate and highly scratchable!
Do not instinctively wipe visor with your hand or cloth, it'll trash it immediately, esp if it's porcelain dust or such like.
I use tear off visors inside and out to protect as much as possible and I don't wipe visor until dust is pretty much removed.
I use either compressed air in a can or squeeze a sponge of water over top of visor first.
Water is most effective.
How do I know all this? ........

 

[macten]

Christ Marc - bet the neighbours are worried when they see you in your haz suit and decontaminating with compressed gas.

 

[Time's Ran Out]

Cut with old grinder outside and upwind. Usually 1 pass is enough to score and snap.