Bevel angle guide help.

[Doowickeybob]

Hi, I've used the bevel angle calculator on here to check my bevel angles and they are 20 degrees on my Boker 5/8 & 21 degrees on my TI 6/8.
Would I be right in thinking to get an angle of 16 ish deg I would need to make the spine thinner?

 

[thesuperiorshave]

How old are these?

They must've been honed a bunch of times post-factory with something covering their spines, or with their spines raised off the whetstones' surfaces. Taping a spine can be OK for a little while, but it will eventually cause the problem you have now. The razors are meant to have each side wear whenever one or the other is touched by abrasive.

Yes, you'll want your ° somewhere from 15-18°, modern TI steel can easily hold to the bottom end of the range. Easy work with only the spine on a DMT, wet/dry paper, etc.

 

[Doowickeybob]

They are both new. Supposed to be shave ready.

 

[thesuperiorshave]

I've handled quite a few new TI and Bökers over the yrs and have never seen any with this kind of native cutting angle, that's the stuff of Chinese razors.

You should perhaps check your measurements; enter the thickest measure of the spine for "side C", measure from the thickest portion of the spine at the spot furthest from the cutting edge all the way to the front of the cutting edge and enter that # for "side A" and "side B", leave the ° field blank, and recalculate.

calculator.net/triangle-calculator.html

I always like to say, "'Shave Ready' to who?", because if it isn't 'Shave Ready' to you, or I, it doesn't matter who else makes that entirely subjective declaration.

 

[Doowickeybob]

I been practicing honeing on a beat up Dovo pearlex I got from Fleabay.
I've ground the spine to 4.5mm & the blade width is 15.7mm. That should give a bevel angle of 16.5°

 

[Doowickeybob]

The previous measurements on my new razors are correct, giving angles of 20° & 21°.
They feel snaggy to shave with, on the other hand the old Dovo now shaves real sweet.
I think I'm going to thin the spines on the new razors to get the bevel angle nearer 16°.