Cutting three layers of BB

[LarryEA]

What do you cut three layers of thin BB with?

How many teeth per inch?

I know this has been answered 50 times.

Guessing it is 1/4 inch thick +-

Edited December 29, 2020 by LarryEA

[Foxfold]

For ¼" thick my go to blade is a Niqua/FD #3 ultra reverse.  For 3mm my go to blade is Niqua/FD #3 ultra reverse.  The Bird on a Tap is 3mm, the Elephant is ¼" Don't know if this helps any 

[Roberta Moreton]

Is each layer of your BB 1/4 inch thick?  

[Scrappile]

This is one of the hardest questions for me to think about, let alone answer..  I have several favorite blades, and which I uses depends on what I am cutting, how many layers, the type of cutting (intricate fretwork, not so intricate or whatever), and my mood.   I do know I seldom us a blade bigger than a #3.  Mostly #1's and mostly none aggressive.  I am a slow cutter and I do not like aggressive blades.  I like more teeth, like double tooth, or lots of single teeth.  And I rarely cut anything over 1/2" thick whether it be layers or solid wood.  I usually stay at 2 layers of 1/4" BB or 3 layers of 1/8".   I know, I am weird....  

Edited December 31, 2020 by Scrappile

[LarryEA]

6 minutes ago, Scrappile said:

This is one of the hardest questions for me to think about, let alone answer..  I have several favorite blades, and which I uses depends on what I am cutting, how many layers, they type of cutting (intricate fretwork, not so intricate or whatever), and my mood.   I do know I seldom us a blade bigger than a #3.  Mostly #1's and mostly none aggressive.  I am a slow cutter and I do not like aggressive blades.  I like more teeth, like double tooth, or lots of single teeth.  And I rarely cut anything over 1/2" thick whether it be layers or solid wood.  I usually stay at 2 layers of 1/4" BB or 3 layers of 1/8".   I know, I am weird....  

I'm cutting 3 of 1/8 BB.  Don't like more than that either

[LarryEA]

Thank you everyone! 

I'll experiment with a few suggestions and

settle on what cuts best for me.

Nothing hard, just small.

I have 360 +- cuts and 200 or more are small.

Lots of time threading

[John B]

I usually stack cut 3 layers of 4mm Hoop Pine ply and choose the blades depending upon how fine the job is. As a general rule I use FDR #1 or #3 and FD New Spirals # 1, 3 or 5.

 

[barb.j.enders]

I did 4 layers of 1/8" bb ply with #1 mg blades.

[scrollerpete]

You should be able to do 4 layers, it is only 1/2” thick, I would not use any blades bigger than #3

[FrankEV]

On 12/29/2020 at 6:58 PM, LarryEA said:

Thank you everyone! 

I'll experiment with a few suggestions and

settle on what cuts best for me.

Nothing hard, just small.

I have 360 +- cuts and 200 or more are small.

Lots of time threading

I personally would not hesitate to cut 3/8" thick material with blades down to 2/0, depending on the intricacy of the pattern.  For me a #1 would probably be the best for this thickness.

Sounds like you are cutting a portrait with many holes.  Again depending on the pattern subject, my blade choice would most likely be a # 2/0 or #1 spiral blade.  Spiral blade are good for most wildlife portraits.

Often, the hole size to stay within the cut lines dictate what blade size you will need to use.  Little cut out areas need little drill holes therfore little blades.

Edited December 31, 2020 by FrankEV

[LarryEA]

Again, I appreciate the answers.

I don't select blades by numbers  #1, # 2, #3

I select by width, thickness and TPI. 

Saying to use a #2/0 or  #3 etc is not a clear answer.

#2/0 width can be .022, .024, .026, .028

Thickness can be from .010 to .012

TPI can .028 to .037

Then there is "Reverse, Skip tooth, Double skip. "

____________________________________________________

If I have to my smallest drill bit, a 69 (.0292) then the smallest blade

Yes different blades cut different depending on width, thickness, TPI etc

and I will NEVER use a spiral !!!!!!!

[FrankEV]

6 minutes ago, LarryEA said:

Again, I appreciate the answers.

I don't select blades by numbers  #1, # 2, #3

I select by width, thickness and TPI. 

Saying to use a #2/0 or  #3 etc is not a clear answer.

#2/0 width can be .022, .024, .026, .028

Thickness can be from .010 to .012

TPI can .028 to .037

Then there is "Reverse, Skip tooth, Double skip. "

____________________________________________________

If I have to my smallest drill bit, a 69 (.0292) then the smallest blade

Yes different blades cut different depending on width, thickness, TPI etc

and I will NEVER use a spiral !!!!!!!

Well Larry, you just taught me something I was not aware of.   I know there are different tooth patterns, but was totally unaware that  the same number blade can have various widths and thicknesses.  I'm assuming those variations are between manufacturers.  

When I suggested a numbered blade it was based on my usage of Pegas MGT R's.    I have a bunch of similar numbered Sharktooth R blades that I don't care for at all.  I've gotten used too the agressive nature of the Pegas blades and the Sharktooth blades seem dull right out of the package.  Have not tried any other manufacturers blades yet.

 NOW, about spirals...nope, not even going to try.   I guess you really must like to spin your work around and around and around......   360 holes, thats a lot of panel spinning.

[LarryEA]

20 minutes ago, FrankEV said:

Well Larry, you just taught me something I was not aware of.   I know there are different tooth patterns, but was totally unaware that  the same number blade can have various widths and thicknesses.  I'm assuming those variations are between manufacturers.  

When I suggested a numbered blade it was based on my usage of Pegas MGT R's.    I have a bunch of similar numbered Sharktooth R blades that I don't care for at all.  I've gotten used too the agressive nature of the Pegas blades and the Sharktooth blades seem dull right out of the package.  Have not tried any other manufacturers blades yet.

 NOW, about spirals...nope, not even going to try.   I guess you really must like to spin your work around and around and around......   360 holes, thats a lot of panel spinning.

Frank, I used to buy all my blades from  Sloan's Woodshop, Olson I believe.

All these variations were Olson blades. She had an excellent way of displaying her blade selection.

Always thought they cut very good, though I did buy Pegas sometimes 

And no, these variations are from the same manufacturer.

I do not mind spinning my work. I believe I can cut sharper 90 degrees also.

I have a bit of a shaking in my hands that don't help with spirals.