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Forum topic by Jack Lewis posted 08-21-2017 04:40 PM 420 views 0 times favorited 5 replies Add to Favorites Watch
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Jack Lewis

176 posts in 829 days


08-21-2017 04:40 PM

It has occurred to me that when roughing a raw log blank mounted on worm screw and live center between barked sides, that cutting intermittently air gaps and solid wood as the log rotates, might hasten dulling the gouge edge.

What are your experiences, conclusions and other thoughts regarding this subject?

Since the air gaps require exceedingly more concentration to prevent catches it is difficult to differentiate between gouge position and dullness.

Should I sharpen more frequently during this roughing stage as a preventive measure?

Should I routinely sharpen, say every time I adjust the tool rest regardless?

-- "Now we are getting no where, thanks to me"


5 replies so far

View LeeMills's profile

LeeMills

418 posts in 1052 days


#1 posted 08-21-2017 07:30 PM

Never thought about it but I would assume the opposite. When you are “cutting air” there would be less wear on the tool not more.
As far as “the air gaps require exceedingly more concentration to prevent catches…”
Check out this video by Lyle Jamieson which demonstrates the proper use of body movement to make the cut; not pushing the tool into the wood with your hands. I would suggest not using the two finger hold shown. :)

https://www.youtube.com/watch?v=X06EjQhDROk

-- We cannot solve our problems with the same thinking we used when we created them. Albert Einstein

View Jack Lewis's profile

Jack Lewis

176 posts in 829 days


#2 posted 08-21-2017 07:44 PM



Never thought about it but I would assume the opposite. When you are “cutting air” there would be less wear on the tool not more.

- LeeMills


My concern and comment is in regard to the impact after the air gap and just as solid wood meets the gouge. Is the impact harder on the sharp edge?

-- "Now we are getting no where, thanks to me"

View Wildwood's profile

Wildwood

2131 posts in 1885 days


#3 posted 08-21-2017 09:02 PM

Really no right or wrong answer to your question, lot depends upon species of wood. If feel you are forcing the tool stop and sharpen it, if cutting like butter continue turning.

-- Bill

View Nubsnstubs's profile

Nubsnstubs

1156 posts in 1480 days


#4 posted 08-21-2017 09:23 PM

jack, don’t think it’s a concern. I can completely turn a piece with about 50% air and start another and turn about half way or to completion before I need to resharpen my tool. Then, the last 10 pieces of Mesquite I started from band sawed rounds, I needed to sharpen at least twice on a 2” thick and 14” round just to remove the chainsaw marks from both faces. It’s in the wood. ............. Jerry (in Tucson)

-- Jerry (in Tucson) www.woodturnerstools.com

View Jim Jakosh's profile

Jim Jakosh

19070 posts in 2856 days


#5 posted 08-21-2017 11:56 PM

I have never felt that rounding up uneven pieces like that caused the tool to dull any faster. If you have a lot of dirt under the bark. that would dull it faster! Clean all the bark and dirt off as best you can before turning. That will just fly off at you anyway!!

Jerry, I have found that the mesquite has a lot of dirt inclusion in it from being blasted into it in the desert. That will dull a tool!

cheers, Jim

-- Jim Jakosh.....Practical Wood Products...........Learn something new every day!! Variety is the Spice of Life!!

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