What are the typical angles on both straight and radiused skews?😕
-
January Turning Challenge: Thin-Stemmed Something! (click here for details) -
Conversations are now Direct Messages (click here for details) -
Congratulations to John Lucas for "Lost and Found" being selected as Turning of the Week for January 13, 2025 (click here for details) -
Welcome new registering member. Your username must be your real First and Last name (for example: John Doe). "Screen names" and "handles" are not allowed and your registration will be deleted if you don't use your real name. Also, do not use all caps nor all lower case.
Angles
- Thread starter cwearing
- Start date
- Joined
- Mar 25, 2008
- Messages
- 307
- Likes
- 285
- Location
- Suwanee, GA
- Website
- www.mikepeacewoodturning.com
I believe Alan Lacer suggests to make the bevel length 1-1/2 times the thickness of the steel. I think 35 to 40 degrees is about right.
Typical point to point angle is 70 degrees whether edge is curved on stright.
Opinions on the bevel angle vary although the 1.5 bevel length to thickness is common.
This yields a grinding bevel angle of about 20 degrees (19.47 degrees to be exact) which yields about 40 degrees between the bevels.
2t bevel length yields a grinding angle of about 15 degrees-30 degrees between bevels.
Bevel length = thickness: 30 degree grinding angle and 60 degrees between bevels.
These ratios can be useful when watching demontrators and turning videos.
Some experts say the larger angles are recommended for hardwoods, smaller angles for softwoods.
Alan's 1.5 x t bevel length recommendation is a good compromise which may be why it's so common.
I hope this helps.
Opinions on the bevel angle vary although the 1.5 bevel length to thickness is common.
This yields a grinding bevel angle of about 20 degrees (19.47 degrees to be exact) which yields about 40 degrees between the bevels.
2t bevel length yields a grinding angle of about 15 degrees-30 degrees between bevels.
Bevel length = thickness: 30 degree grinding angle and 60 degrees between bevels.
These ratios can be useful when watching demontrators and turning videos.
Some experts say the larger angles are recommended for hardwoods, smaller angles for softwoods.
Alan's 1.5 x t bevel length recommendation is a good compromise which may be why it's so common.
I hope this helps.
john lucas
AAW Forum Expert
My own choice is about 35 degrees bevel to bevel. I find the 25 degree skews take lots of practice to use. 45 is a little more forgiving but of course doesn't cut as clean. I have skew ground more blunt. I use those for cutting coves because the shorter bevel lets me cut steeper coves.
As far as angle heel to toe I go along with the general rule of about 70 degrees.
As far as angle heel to toe I go along with the general rule of about 70 degrees.
Good, logical, idea John, I am going to give it a try the next day it rains. Thanks!
- Joined
- Jan 27, 2005
- Messages
- 13,039
- Likes
- 5,481
- Location
- Dalworthington Gardens, TX
- Website
- pbase.com
The typical amount of skewness is 20° from square (or 70° if you want to measure from the lengthwise edge). For grinding the cutting edge, the included angle between bevel faces is 40° to about 50°. This means you need to set the grinder for half that angle since you are grinding from both sides. so the grinding angle would typically be 20° to 23° or so. For thicker skews like the Lacer slab of steel skew, I use larger angles. For my Sorby oval skew, I use a more acute cutting edge. A radiused skew isn't much different than a regular skew -- at the long point the skew angle would be close to the 70° (20°) angle while the short point angle would be close to 60° (30°) with a smooth transition in the skew angle from end to end. Some people like Alan Lacer and Richard Raffan use a rather extreme curvature along the cutting edge, so whatever works for you. There are no rules other than the skew must be sharper than razor sharp.