Blade direction

[Tom Gi]

I got some ultra reverse Flying Dutchman 

somewhere I watched a video how to tell which way was the right direction to install them

there is a small notch or bump on one end is it supposed to be up or down

looking at the teeth under a magnifier they are so small can’t tell the direction 

thanks

[dgman]

You can’t tell by looking at them. The notch is the top of the blade. If you look at the label, it tells you the same thing.

[JTTHECLOCKMAN]

44 minutes ago, Tom Gi said:

I got some ultra reverse Flying Dutchman 

somewhere I watched a video how to tell which way was the right direction to install them

there is a small notch or bump on one end is it supposed to be up or down

looking at the teeth under a magnifier they are so small can’t tell the direction 

thanks

Right on front of package it says Crimp on top of the blade. 

[Fab4]

Hi Tom:
Crimp or no crimp really doesn't matter
If you "lightly" run your finger along the blade, you can feel which way the teeth are going, make sure that the bulk of the blade is pointing downwards and the 6 or 8 teeth at the bottom point upwards.  As mentioned above, if there's a crimp then it's a lot easier to tell which way the the blade goes.
Fab4

[JimNC]

Is this for just the ultra reverse blades or is this for all REVERSE blades? I always wondered if there was a right and wrong way to install reverse blades.

[TAIrving]

1 hour ago, JimNC said:

Is this for just the ultra reverse blades or is this for all REVERSE blades? I always wondered if there was a right and wrong way to install reverse blades.

Jim @JimNC, I cannot tell which post you are referencing.  The post about the bump at the top of the blade does NOT apply to blades other than Flying Dutchman.  

What Paul @Fab4 said about running your finger along the blade works for all brands of blades.

[barb.j.enders]

Don't be fooled on the Pegas Modified Geometry blades.  They seem to have a little notch in the blade.  It is NOT the top.  I have had, in the same package, some with the notch at the top and the bottom.  The only sure way is to run your finger on the blade.

[JTTHECLOCKMAN]

lets take it easy now. OP asked about the ultra reverse blades from FD.. It does not work to run the finger down on those blades because there is a reverse blade every third tooth all the way up the blade so you will not feel the difference. At least not with my pudgy fingers.  Thus the need for the identification on the blade with the stamping. I believe there are other blades like this in both brands where the teeth are opposite each other through the whole blade. There was discussion here about the notch on the Pegas blades and I do not remember much about it because I do not use that brand. Maybe someone can clarify the results of that. 

Edited yesterday at 03:14 PM by JTTHECLOCKMAN

[Denny Knappen]

As for Pegas MGT blades, the notch is not for direction of the blade.  It is a function of the manufacturing process.

[BadBob]

I have seen the claim repeatedly that blades are notched at the top, and I have started paying close attention. I have Pegas, Flying Dutchman, and a few Olsen blades. I have found them with the following:

• Both ends notched
• Top end notched
• Bottom end notched
• Neither end notched
• Sometimes, mixed in the same batch

The best way to find the top is to lightly rub the teeth with my finger. I can feel it when the direction changes.

[BadBob]

21 hours ago, JTTHECLOCKMAN said:

OP asked about the ultra reverse blades from FD.. It does not work to run the finger down on those blades because there is a reverse blade every third tooth all the way up the blade so you will not feel the difference.

I don't have any of these. Is there a top and bottom for an Ultra reverse blade?

[barb.j.enders]

19 minutes ago, BadBob said:

I don't have any of these. Is there a top and bottom for an Ultra reverse blade?

This is from Mikes Workshop page on the Ultra Reverse.  

Unique new scroll saw blade design. Every 3rd tooth reversed to prevent splintering on underside. Faster, smoother cut. These come with a crimp on the top of the blade to help with proper orientation in your saw.

@Tom GI to answer your question, the crimp/bump is the top of the blade.

[BadBob]

Quoting from @barb.j.enders Ultra Reverse post that was too small for me to read:

Unique new scroll saw blade design. Every 3rd tooth reversed to prevent splintering on underside. Faster, smoother cut. These come with a crimp on the top of the blade to help with proper orientation in your saw.

[barb.j.enders]

1 minute ago, BadBob said:

Quoting from @barb.j.enders Ultra Reverse post that was too small for me to read:

Unique new scroll saw blade design. Every 3rd tooth reversed to prevent splintering on underside. Faster, smoother cut. These come with a crimp on the top of the blade to help with proper orientation in your saw.

Sorry about that @BadBob, I reduced the font to make it "clear" that it was a direct quote.