Multitool blade to cut plaster over plasterboard?

[jacoscar]

I need to cut out a 3m long strip of plasterboard from a ceiling (plasterbard + 3-4 mm of plaster and artex paint on top)

I normally just use a wood plunge blade, but it seems to wear very fast; I think this is due to the plaster as when you've got thorugh the first skin it cuts the plasterboard pretty fast.

I think I would need some kind of diamond coated blade, do they exist for a multitool and would they make my job easier?
The alternative would be to first score the surface with my grinder diamond blade and then finish the cut with the normal multitool blade

 

[footprints]

They do tile/grout cutting blades for multitools with grit blades.

https://www.toolstation.com/smart-multi-cutter-tiling-blade-set/p15760

I assume you know the dangers of asbestos in some Artex?

 

[ETAF]

if you decide to go down the multi-tool route - have a look, or a talk to Saxtonblades - they are very good and reasonably priced.
the advice i have received has been really good
https://www.saxtonblades.co.uk/contact
NOTE - I'm a DIY'er, but I have done a lot of projects with the Multitool, not really much with plasterboard.

 

[footprints]

Yes Saxon are good

 

[jacoscar]

I assume you know the dangers of asbestos in some Artex?

Yes, I do, I have a certificate saying there isn't any asbestos in the ceiling

 

[opps]

The carbide tipped blades can be incredibly slow though.

I suspect that the artex is harder than the plaster.

Personally I would consider buying lots of cheaper wood/universal cutting blades such as Saxton and swapping them out as they go blunt. I would also recommend tilting the tool to about 15(?) degrees whilst cutting rather than doing consecutive plunge cuts.

It will be a dusty job though. You could use gaffer tape to hold a vacuum hose to the tool whilst working.

 

[ajstoneservices]

I stick to bi-metal blades now as the carbide or diamond blades take for ever.

 

[jacoscar]

I stick to bi-metal blades now as the carbide or diamond blades take for ever.

What are those? The finer tooth blades that cut metal and wood?

 

[Dereekoo]

When my builder did that to place new pipes he just used a jab saw but the whole ceiling was replastered so the rough cut didn't matter

 

[ajstoneservices]

What are those? The finer tooth blades that cut metal and wood?

Bi-metal blades

 

[foxhole]

Circular saw would be quicker .

 

[catlad]

You will find it easier if doing a long stretch using a circular multi-tool blade.
Bosch actually make one for plasterboard which is semi round.

 

[opps]

Circular saw would be quicker .

I don't think I would have the guts to use circular saw above my head, particularly not when then is a risk of hitting screws or mails.

 

[cdbe]

Jigsaw. If you want to cut down the centre of the joists, like when lifting floorboards then just cut down the blade.

 

[jacoscar]

Jigsaw. If you want to cut down the centre of the joists, like when lifting floorboards then just cut down the blade.

You’re kidding