Thread: Changing bevel angles

Surely someone knows?

Without having tried it and seeing as no one else has answered -

I did a quick drawing of what you're trying to acheive and it appears to me that to go from 38 to 50 you'd be able to hone another slightly larger micro bevel. Much the same as putting a micro bevel on a new bevel up blade straight from the factory.

From 50 to 38 requires about the same material to be removed according to my drawing however I feel this would be more of a grinding operation.

Hope this helps,

Sam

Is it ground at 38° or is it a 25° primary with a 38° secondary? Either way just grind/hone till the 50° secondary removes the old secondary bevel. Although there is no harm in having two successive bevels. It's the intersection of the two sides that does the work. I would grind and then hone a secondary at 50° but I have a Tormek angle master set up on the dry grinder which makes it easy to get the angles right.

Originally Posted by groeneaj

Hi all,
Just a quick question in relation to bevel up planes.
If you have a 38 degree angle honed iron and you decide that it's not high enough and you'd like to go to 50 degrees, do you have to re grind the iron to it's primary then hone at 50, or can you go straight from 38 to 50 degrees?

Thanks

Andy

Hi Andy

Just hone a secondary microbevel at 50 degrees. No drama.

Regards from Perth

Derek

Thanks for all the replies. This is a thread I forgot about.
Ok, so you can hone higher angles, but can you go from a higher angle to a lower angle ie if you have a secondary bevel honed at 50, could you go straight to the stones and hone to a lower angle of 38?

Andy

Andy

Since the 50 degree secondary is a micro bevel - that is really tiny -you can grind it off and replace it easily enough with a 38 degree microbevel ... or simply have more than one blade. This is one of the reasons for a 25 degree primary bevel and then using micro secondary bevels.

Regards from Perth

Derek