SMT "guttered #45 blades"?

Re: SMT "guttered #45 blades"?

Ted Shuck, Centennial, CO

>I had not seen this before, but it sounds like he shaped the cutting edge similar to one of those nicker blades from a woody dado plane. That is, the cutting edge is indented between the two outside edges. The prominent outside edges serve as the nickers.

The only way I can think of to do this would be to grind a bevel in two levels. The very outside edges of the blade would be at the "normal" bevel. Between the outside edges, you would have to grind a trough in the bevel so that the outside edges meet the wood first and score it.

This could be similar to a beading blade with very sharp prongs on the outside edges and a very shallow profile???

Regards,

Ted

Concur

Jorge Castaneda

>You got it.

Happy Birthday Jorge.

Dave Anderson Chester, NH

>I'm gonna wish you a great one. I'm also gonna be nice and not tell which one it is.

He's got more than one?

Bill Houghton, Sebastopol, CA

>LOML and I have two anniversaries (formal and informal), but I've never heard of someone who's got more than one birthday.

Happy Birthday from me also!

HC Sakman @ Victoria, BC

>and wish you many more Jorge!

Chico...

Re: SMT "guttered #45 blades"?

Roger Nixon

>That is kind of what I thought but how would you grind it? Dremel?

Re: SMT "guttered #45 blades"?

Derek Cohen (in Perth Australia)

>Roger

It seems to me to be enormously difficult to create such a blade without special jigs. Not only do you need to grind between two points, but you also need to grind flat. And then you need to hone it all to a useful edge.

What is wrong with using the #45 with nickers on each side of the blade?

Regards from Perth

Derek

Re: no;grind the back, not the bevel

paul womack

>A small gutter (hence the name) is ground in the back of the blade.

When the bevel is sharpened normally (i.e. flat) the 2 proud edges end up protruding a little, and act as nickers.

Once the gutter has been ground, no further special action is required, (although backing off the burr when sharpening requires a slip stone).

BugBear

There is a different way

Jim Reed @ Tallahassee

>to get the same results. I don't like the nickers either because they always seem to leave a rough shoulder. What I do is use a 1/8" blade first. On a rabbet, I cut the inside shoulder first with a 1/8 and then clean out the waste with a larger blade. Nice looking shoulder and the fence does not have to be exactly on target to make a nice cut. For large dados, I cut a saw kerf in lieu of nickers. Works for me.

Good one!

Roger Nixon

>Seems so obvious once someone point it out.

Thanks, BB.

Re: SMT "guttered #45 blades"?

Roger Nixon

>Nothing really wrong with using the nickers but it is always nice to be able to skip a step if possible. I don't like sharpening nickers and I wonder where I will get replacements when they are sharpened up.

I was thinking of making some dado blades to fit ummm... laminated wood panels, yeah that's it, and I remembered Stephen writing that he cut dados in ply.. laminated stock with a #45 and guttered blades.

Re: Happy Birthday Jorge.

Jorge Castaneda

>Dave,

Thank you! very nice of you to remember, I will have to do some research and find when is yours...: )

Re: He's got more than one?

Jorge Castaneda

>Bill,

It is not aobut 2 birthdays, it is about having scores of them, so it is hard to remember which one...

Re: Happy Birthday from me also!

Jorge Castaneda

>Gracias Chico

I hope you get lots of them too. : )