Bull nose rebate plane - grinding angle

[david simper]

Can anybody tell me if there is an ideal grinding angle for this plane? If so, what is it? Do you grind and hone to the one angle, or do you go for a micro-bevel? If the latter, what's the micro-bevel angle? Thanks.

Dave

 

[engineer one]

which particular plane are you talking about? brand and model number maybe :roll:

paul :wink:

 

[david simper]

Hi:

The plane is an Anant from Rutlands. It is 4" long. Hope that that's useful.


Dave

 

[Paul Chapman]

Is it this one http://www.rutlands.co.uk/cgi-bin/psProdDet.cgi/A77

If so, that's the same pattern as the Record 077. You will probably find that the blade is ground to an angle of 25 degrees. I would simply flatten and polish the back and hone a secondary bevel at 30 degrees. The important point with these planes is to keep the honed edge straight and to keep it at 90 degrees to the side. When you use it, set it to take fine cuts.

Cheers :wink:

Paul

 

[david simper]

Yes it is that one. Thanks for the info.

The problem is that the iron is forged quite crudely with the edge well off 90deg with the side, so it needs a fair bit of grinding to correct this. Otherwise I think that this Indian made bit of kit is ok for the money; feels good in the hand, adjusts and locks down alright. I definitely need to get the hang of it, a process that will be helped by feeling confident on these sharpening angles.

I have to say that I really notice the difference in quality when I go back to my Stanley 92, a tool that's also art.


Dave

 

[Modernist]

I bought one of these from Rutlands recently and returned it as the sole was not square to the sides. To be fair they were only too pleased to help and I eventually coughed up for the Veritas version which is in a different category altogether along with the price,

 

[bugbear]

The problem is that the iron is forged quite crudely with the edge well off 90deg with the side, so it needs a fair bit of grinding to correct this.

NOoo!!

The blade edge must be parallel to the sole. What angle you grind the edge to relative to the blade depends on how the plane bedding surface sits relative to the sole. Only if this surface is very accurate will the "obvious" angle of 90 degrees be correct. Just to make matters worse, a low bedding angle exagerates the effect of inaccuracies in the bed.

Check the projection of the blade from the plane, and grind guided by that.

DAMHIKT.

BugBear

 

[david simper]

Will do. I'll see if I can sort this out. Thanks for the advice all.


Dave