Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 5 of 5
Thread: Bandsaw blade for smoothest cut?
-
9th March 2018, 09:50 AM #1GOLD MEMBER
- Join Date
- Mar 2008
- Location
- Townsville, Nth Qld
- Posts
- 4,236
Bandsaw blade for smoothest cut?
I intend cutting a 12 mm thick board lengthwise, but at 15 degrees to the long grain i.e., not quite a rip cut, but I need a very smooth finish off the blade.
i have read that blades with large spacing between teeth are best, because they remove the sawdust best, then I also read that blades with lots of small teeth close together give the smoothest cut.
I would very much welcome the advice from our experienced bandsaw woodworkers on the best way to go.regards,
Dengy
-
9th March 2018 09:50 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
9th March 2018, 10:12 AM #2.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,786
BS finish has as much to do with, operator skill, BS setup, and BS blade condition, as it does with the tooth spacing.
Just one tooth in the entire blade needs to be slightly misaligned and it will mess up the finish so for this reason I suggest starting with a new blade.
The blade tension and guide positions also need to be optimised.
All else being optimised, a smaller tooth spacing will usually give the smoothest but very much the slowest cut, especially in ripping mode.
Because of the slowness of the cut there is a tendency for the operator to push harder which may cause the blade to wander off the required line of the cut.
This will mess up the finish more than the TPI factor..
However there is another factor to consider in that its recommended that least 3 and preferably 4-5 teeth be in the cut and given the board is only 12 mm thick that means at least 6 TPI. If everything else is optimised then a 6 TPI should provide the finish you require.
Suggest tuning up the BS before hand and practice before cutting your final piece.
-
9th March 2018, 10:28 PM #3
When you say very smooth finish are you intending to go strait to glue up. If so I think you are expecting a lot from a bandsaw. I would be cutting then using a plane to clean up the face.
Regards
John
-
10th March 2018, 10:04 PM #4GOLD MEMBER
- Join Date
- Mar 2003
- Location
- Newcastle
- Age
- 69
- Posts
- 1,073
The more teeth the finer the cut. I use 10 tpi and and 14 tpi for fine work and the 14 tpi gives the best off the saw finish. Beware though as sometimes an unhappy combination of speed, thickness, hardness and tension will induce a harmonic ripple in the cut surface. Do a test piece first and if the ripple shows up try increasing or decreasing the tension. Also with a new fine tooth blade you get a honeymoon period for fifteen or twenty minutes when it cuts really well then slowly loses its edge.
-
10th March 2018, 10:58 PM #5.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,786
Talking about harmonic ripple check out this massive example involving a chainsaw mill.
The only difference between the two is that the RHS is about 150 mm wider a cut than the LHS.
Same log, same saw, same freshly touched up chain, same forward pressure as log is on a slope.
Most chainsaw millers find it hard to believe I get that good a finish milling with a big chainsaw.
C0ntrast.jpg
Similar Threads
-
bandsaw blade help
By Heardy in forum WOODWORK - GENERALReplies: 5Last Post: 15th March 2016, 11:01 AM -
What blade for my bandsaw
By code4pay in forum BANDSAWSReplies: 9Last Post: 9th June 2014, 07:04 PM -
Bandsaw Blade Width Selection & Bandsaw bed throat and blade Alignment
By thumbsucker in forum BANDSAWSReplies: 30Last Post: 17th May 2014, 09:06 PM -
Is my bandsaw blade too big?
By Damienol in forum BANDSAWSReplies: 5Last Post: 25th August 2013, 10:35 AM -
Bandsaw Blade
By m2c1Iw in forum BOAT RESOURCES / PRODUCT SEARCHReplies: 3Last Post: 1st September 2011, 12:03 AM