Sawing in lightweight concrete blocks/clinker blocks?

[cheetah1]

Hello!
What the heck should one use to saw through lecablock (also known as lightweight clinker blocks)?
"I heard somewhere an old used handsaw," but after sawing through a 19x19 block twice, I have no teeth left at all on my two old used handsaws. So what do you do? Besides, I'm likely to have some serious muscle soreness tomorrow because it bites like hell...

 

[byggare henke]

axe works, there are special saws too.
or cut with stone blade, on all four sides,
and knock with chisel and sledgehammer

 

[Pagno]

Angle grinder with coromant blade cuts all stone/brick, otherwise a "stone" saw blade for the reciprocating saw costs about 150:-. I personally use an old crosscut saw with blades from CO, Jula, cheap and okay to use, it creates a lot of dust, and I also wear a visor due to stone chips sometimes...
"builder"

 

[FredrikR]

Bought a 'fogsvans' with carbide blade at Jula for ~300:- when I was building on the lecavarvet on the garage foundation.

 

[niblom]

I've used a reciprocating saw and special blades. However, it needs to be a sturdy reciprocating saw, as cutting through leca takes quite a bit of effort (as you've already noticed)...

 

[santos]

Cheap reciprocating saw from ÖB and an expensive blade. Worked great.

 

[cheetah1]

We have a 750W tiger saw from Harald, we'll need to buy Bosch blades at Classe tomorrow then maybe. Dad said he had seen two for 139.

 

[mrVoodoo]

The times I've laid leca (a stable and a storage, so it was quite a few stones), we rented, if I remember the name correctly, an alligator saw. Like cutting butter with a hot knife (okay, almost at least ) and the blades last relatively long. The rental cost for the saw is minimal, but the blades can be pricey.

One like this I think it was (maybe not exactly that model, probably a generation older since it was a rental machine).

 

[frhe]

I think an axe gives excellent results. I switched to it after ruining a couple of cheap handsaws. It gives straight, fine edges after some practice.

 

[Mikael_L]

We have a reciprocating saw from Harald with 750W, might need to buy Bosch blades at Classe tomorrow then. Two for 139, dad said he had seen.

Make sure to get blades with soldered carbide teeth, otherwise there's no point in buying expensive blades.

I used an axe. Tap a groove, a breaking point, where the blocks should be cut, then a good chop and finally some trimming with the axe.
But when some already-mortared blocks needed to be cut, I didn't want to risk them cracking inaccurately, so I used Biltema's cheap reciprocating saw blades that lasted for 2-3 cuts before the teeth were completely gone. But there were only 4 cuts needed, so ..

Here Maxit offers some suggestions:
http://www.maxit.se/2156

Chainsaw with carbide chain is the thing.

 

[mrVoodoo]

Chainsaw with carbide chain is the thing.

Hehe definitely, or the band saw! But that might be a bit over the top for an amateur to buy one, perhaps? But you're always tempted, there can never be too many machines