newshound wrote in
o.uk:

On 07/10/2020 16:51, Tricky Dicky wrote:
To cut the Celotex floor insulation into joist gap panels, I bought
some of these jigsaw blades which should be good for up to 100mm.

https://www.amazon.co.uk/Bosch-Profe...-softmaterial-
Bl
ack/dp/B000R5LTGC

Now the jigsaw is not one of my favourite tools so I have never owned
an expensive one due to the little use I make of it. What I am
finding is go slightly off line and the blade bends out and it is
almost impossible to get a perpendicular cut over 1.2m in 75mm
Celotex. Some of the reviews mentioned this and I was wondering if
the problem is down to the blade having no set therefore not cutting
a proper kerf or is it down to the jigsaw?

Richard


Once you put any sideways force on a jigsaw blade it will bend and you
won't get a square cut any more.

Cut by hand using a panel saw?

A power tool is not the answer to every task.