Carve out groove manually in Leca

[Johan Gunverth]

What method or tool is best for recessing, for example, battens or studs into a masonry Lecawall? I realize that I need to do this in a few places in the basement to attach some paneling and tongue and groove boards. I need to create a groove of 28x70mm and then attach battens with screws and plugs in the same groove. I don't want to use machines with cutting blades because it's indoors and Lecadust is not desirable. Preferably a hand tool, then.

 

[kocken66]

an old hand saw works quite well

 

[Johan Gunverth]

an old hand saw works quite well

You mean a dull ripsaw that you can't bother to sharpen? Of course; with a depth mark using masking tape on the blade, it can work well. Are you supposed to use it in combination with a chisel, then? Two saw cuts and then chop away what's between the cuts?

 

[ClasseClas]

It sounds ambitious to embed 28*70 nail battens with cc600. I assume you don't want to reduce the room space. Otherwise, the simplest would be to attach the battens on the outside of the lecawalls. An alternative is to use a thinner steel stud on the leca and then mount the panel. I can't find right now which dimensions the standard metal studs are available in, but look into this alternative further.

 

[Mikael_L]

Reciprocating saw with lättklinkerblad ???

Check this page, might give some tips ...
http://www.maxit.se/2156

 

[Johan Gunverth]

That sounds ambitious to recess 28*70 nail battens with center-to-center 600. I assume you don't want to take up room space. Otherwise, the easiest thing would be to attach the battens on the outside of the lecavägg. ...

It's not a question of so much batten, maybe 10-12 meters, and the recess is a requirement since the panel continues on an already framed wall with door frames flush. I don't want the panel too far into the door frame.

 

[Johan Gunverth]

Have now tested with the fogsvans and it went quite well. It wears hard on the blade, but it doesn't matter much since the saw was already finished. Then I hacked out with a homemade "chisel" made from flat iron.
The advantage is at least that the removed material falls straight down instead of dusting the whole house.

 

[magnusss]

I would recommend a chisel (costs 17kr at Biltema).
The advantage of a chisel is that it has good weight and a guard so you don’t hit your fingers with the hammer.
It also works well for chiseling in concrete.