gidon":10x34avx said:
Thanks Gareth - I think you had it right the first time? My original blade is the 2mm one. Do you also have one of the 80T ALU -5 degree rake blades (going cheap as part of a set from Axminster)? If so that one is 3.2 mm. I would be very interested to know how that matches up with the laserkerf if you get a chance.
Many thanks
Gidon
Ahhh yes I did
Need more whisky .........

ccasion5: ... ahh thats better, shall I start again.
Back to the first measurements:
Std Bosch fitted blade = 2.04mm
Neg rake Bosch 3.2mm kerf blade = 3.28mm
Laser kerf = 3.4mm
Some pics of 2mm blade vs 3.2mm blade. The 3.2 works better as you can set the laser up to hit a line both sides of the blade. for the 2mm kerf blade the laser is too wide and you have to compensate by just missing the line.
3.2mm blade laser on the RHS line:
3.2mm blade laser on the LHS line:
3.2mm blade cuts pretty much dead on the line both sides.
2mm blade cuts both with laser re centred and set on the line as above:
Short answer, use the correct blade for the kerf size #-o