devonwoody
Established Member
Can anyone please tell me the angles I need to maintain when regrinding and honing up the blade for this chisel plane.
Stanley no. 90
- Thread starter devonwoody
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bugbear
Established Member
devonwoody":317m8ngm said:
Unless you're doing something unusual, I'd start by trying a primary angle of 25 degrees, and a honing angle of 30. This advice is very common for a very good reason.
BugBear
devonwoody
Established Member
Thanks Bugbear, thats the angles I have used but I am getting some digging in.
So would other angles avoid this problem?
So would other angles avoid this problem?
MikeW
Established Member
Hi DW,
Chisel planes are difficult to keep from digging in. Firm pressure on the back of the plane--at least well behind the cutting edge--is a good start.
Also, it helps to make sure the edge has been ground back far enough to rid yourself of any rounding (lower wear bevel) which occurs by using an edge tool regardless of type.
As a side note, the lower wear bevel is excacerbated the lower the bedding angle in a plane. So the underside of the blade becomes rounded over. Unless this is fully removed during sharpening, one has to project the blade further from the plane's body in order to cut at all. In most cases this causes one to take too big a bite.
As well, they seem to work for me best when a very light cut is taken--which makes a fully sharpened blade (removal of the lower wear bevel) all that more important.
Take care, Mike
Chisel planes are difficult to keep from digging in. Firm pressure on the back of the plane--at least well behind the cutting edge--is a good start.
Also, it helps to make sure the edge has been ground back far enough to rid yourself of any rounding (lower wear bevel) which occurs by using an edge tool regardless of type.
As a side note, the lower wear bevel is excacerbated the lower the bedding angle in a plane. So the underside of the blade becomes rounded over. Unless this is fully removed during sharpening, one has to project the blade further from the plane's body in order to cut at all. In most cases this causes one to take too big a bite.
As well, they seem to work for me best when a very light cut is taken--which makes a fully sharpened blade (removal of the lower wear bevel) all that more important.
Take care, Mike
devonwoody
Established Member
Thanks Mike, I reckon I have got that rounding over problem, so I suppose I have got to go for a regrind, the first in 35 years. 
