funny knot

[peter1958]

My bandsaw circle jig works well but the blade is not cutting very smoothly.
Nevertheless used it for a rollerball.
The knot i didn't expect, wanted some curved lines.
CA finish

 

[Dieseldoc]

Peter
:To get smooth band saw cut use a higher number TPI blade. I use a 8TPI and it works great.
Cheers
Charlie

 

[peter1958]

I used the finest blade i have, i'm going to put another one on the saw and let you know.

 

[leehljp]

I think you are on to something. Exciting when something surprises like that! Well done.

 

[Gary Beasley]

Try a scrollsaw if you want a smooth cut..

 

[peter1958]

I think you are on to something. Exciting when something surprises like that! Well done.

I wanted to turn slimmer but the knot-effect would be gone. I measured all with a digital caliper and wrote it down.
The initial blank was about square 24.6 by 24.9 mm.
Drilling was perfect in the middle i thought, measuring the wall thickness from all 4 sides showed that there was a difference of 0.4 mm between 2 sides. The other 2 sides were equal to eachother.
The bandsawblade that i used has 6 tpi, 12 mm blade and a 1.2 mm kerf, my other blade 4 tpi 18 mm blade kerf i don't know yet.
So i ordered 2 new blades. Tomorrow i try the scrollsaw, but the kerf?

 

[leehljp]

I wanted to turn slimmer but the knot-effect would be gone. I measured all with a digital caliper and wrote it down.
The initial blank was about square 24.6 by 24.9 mm.
Drilling was perfect in the middle i thought, measuring the wall thickness from all 4 sides showed that there was a difference of 0.4 mm between 2 sides. The other 2 sides were equal to eachother.
The bandsawblade that i used has 6 tpi, 12 mm blade and a 1.2 mm kerf, my other blade 4 tpi 18 mm blade kerf i don't know yet.
So i ordered 2 new blades. Tomorrow i try the scrollsaw, but the kerf?

I wasn't paying attention to your location at first, but just realize that you are located in a metric system country. I lived in Japan for 25+ years and loved the ability to find metric sizes in circular saw blades and other saw blades that I could not get in the USA. I have numerous 1mm kerf and a few .9mm kerf circular saw blades. I wish I could fine large bandsaw blades with a 1mm kerf.

Going from inch-fractions to mm and back has never been a problem for me, and there are advantages of knowing both. But honestly, I enjoyed the metric when I was overseas.