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wrote:
AlexW wrote:

wrote:

How does a blade make a curved cut on a bad saw? Maybe the blade is
ground wrong and creates sideways forces that bend it as it cuts? I
dont know, but the kinzo didnt suffer that problem.

I have had this problem on a number of saws, my thoughts although not

exhaustively tested are...

1) Workpeice not up against fence, or dodgy fence. Either can result

in

a slight twist in the timber as the blade enters and/or exits.

Clamping

helps.

2) Dogdy cheap blades, even if ground OK they can flex under

pressure.

all circular blades flex under pressure. The user needs to not put
enough pressure on them to cause them to misalign - it might possibly
be that the problems we're seeing are due to users not appreciating
this.

Indeed. Point was that dodgy cheap ones are more susceptible to
deflection, as a rule of thumb.

Case in point my DeWalt series 40 on DW707, is better than the Wickes
£10 one on my old B&Q jobby. Wickes is actually quite good though for
the money (1/5th the price!).

3) Excessive movement in the spindle/collar/arbor (whatever its

called)

which allows the blade to move laterally a bit.

Thats something I'd check before buying a cheapie saw, wasnt a prob
with the kinzo, no free movement.

Yup. I have seen some quite good brands do this. Implication is that
when the head is angled you are relying on the weight of the head
somewhat for stability!

4). Its not curved ... but the saw has not been set up properly with

a

square etc in both planes.

yup... that would be one terrible saw though. £27 Kinzos arent like
that, Ive not played with BnQ stuff.

Sounds like a good deal then ... result!

Several of the ones I have played with need a bit of adjustment to get
spot on. That does not mean that the saw is bad, just not setup right.
It also depends on how square you need things. Like I said in a another
part of this thread having a good look at a saw in person is a good
idea, IMO.

Its worth checking the setup from time to time, especially if the saw
has been handled roughly.

Alex