Thread: Mouth adjustment -- Record 077A Bullnose Rabbet Plane -- what does it accomplish?

On any plane an adjustable mouth allows for taking thinner or thicker shavings. Wider the mouth, thicker the shaving.

Wider = coarser; narrower = finer. By just a fraction, of course.

A bullnose plane like the Record 077A comes with shims which can used to widen the mouth. Or it can be used without a nose at all and used as a chisel plane.

Bullnose planes are typically quite close mouthed by design.

V

Originally Posted by dubrosa22

On any plane an adjustable mouth allows for taking thinner or thicker shavings. Wider the mouth, thicker the shaving.

Wider = coarser; narrower = finer. By just a fraction, of course.

A bullnose plane like the Record 077A comes with shims which can used to widen the mouth. Or it can be used without a nose at all and used as a chisel plane.

Bullnose planes are typically quite close mouthed by design.

V

Thank You. One of the two shims is missing, but otherwise the plane is in good working order. Cheers, Mike

Aluminum drink cans are a good source of shim material for all sorts of things if you ever feel the need. Just cut it out with scissors.
Regards
John

Originally Posted by orraloon

Aluminum drink cans are a good source of shim material for all sorts of things if you ever feel the need. Just cut it out with scissors.
Regards
John

Good advice, thanks. Me too, I need to make shims for my Record 077A
Ciao
Giuliano

For a bullnose plane, it may not be all that important. I have a Stanley No. 90J bullnose plane with a fixed mouth, like this one but not as pretty:
Stanley 90J plane.jpg
I use it more often than I do the Record because it's more comfortable, and I don't have trouble with tearout. In my experience, sharp edges make more difference than mouth opening for most woods. Someday, I'll get around to filing the sharp edges off the Record where my fingers fall in holding it, and then maybe I'll start using it more.