knowing it is sharp

[pam]

mrgrimsdale said:

...
No it's not something I was aware of and doesn't seem to get mentioned in the books except that toothed plane/scraper for veneering....

BTW, toothed blades are probably not too great for gluing. The principal of creating more glueable surface is a good one, but in practice that would only work if the grooves resulting from a toothed blade could be lined up so the two pieces being glued nest together. I think it highly unlikely one could plane straight enough for this to be possible. Besides, current practice is to go for ultra smooth mating surfaces.

I didn't realize you were trying to use a tailed planer. Why do you post this in the hand tools subforum?

Pam

[mrgrimsdale]

cos I was following some other comments which had strayed on to machining.

[davidc]

Jacob,

I would confirm your observation. It has always seemed to me that a slightly blunt blade does in effect have a slight back bevel, and will cause less tearout on difficult stuff than a sharp one.

David

[mrgrimsdale]

Righto thanks I'll put the old blades back in with more back bevel on and try again. Running out of thickness to experiment with, but it'd be nice to save several noisy hours with a belt sander.

cheers
Jacob

[Scrit]

engineerone said:

....as you keep saying very little is new, and toother blades are I think rather like ridged soles for planes another attempt to make up for the basic shortcomings.

In Jacob's defence his background is joinery, a predominently solid timber trade, whilst toothing planes were primarily used for veneer work, which is a very different area of the wood trades. Even in veneer shops they've fallen out of favour with the introduction of modern glues, thinner veneers, heated platen presses, etc. althought they do have a place in restoration/conservation and possibly areas such as intarsia, marquetry and so forth. In other words for many trade purposes they are a bit of anachronism these days.

Scrit

[engineerone]

defending anachronisms that i like ;D

so we have all learnt something useful i think and hope.
paul